summaryrefslogtreecommitdiff
path: root/Master/install-tl
blob: f9127548d8fa3fea66410f7d512c6ebba5479ae0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
#!/usr/bin/env perl
# $Id$
# 
# Copyright 2007, 2008, 2009, 2010, 2011
# Reinhard Kotucha, Norbert Preining, Karl Berry, Siep Kroonenberg.
# This file is licensed under the GNU General Public License version 2
# or any later version.
#
# Be careful when changing wording: *every* normal informational message
# output here must be recognized by the long grep in tl-update-tlnet.
#
# TODO:
# - with -gui pop up a transient window showing:
#      testing for compressed archive packages ...
#      testing for uncompressed live system ...
#      testing for network access ...
#      loading tlpdb, this can take some time ...
#   (that, and maybe some others can be done with the waitVariableX
#   thingy as described in the Perl/Tk book in the chapter that can be
#   found on the net)   (Werner 28.10.08)

my $svnrev = '$Revision$';
$svnrev =~ m/: ([0-9]+) /;
$::installerrevision = $1;

# taken from 00texlive.config: release, $tlpdb->config_release;
our $texlive_release;

BEGIN {
  $^W = 1;
  my $Master;
  my $me = $0;
  $me =~ s!\\!/!g if $^O =~ /^MSWin(32|64)$/i;
  if ($me =~ m!/!) {
    ($Master = $me) =~ s!(.*)/[^/]*$!$1!;
  } else {
    $Master = ".";
  }
  $::installerdir = $Master;

  # All platforms: add the installer modules
  unshift (@INC, "$::installerdir/tlpkg");
}

use Cwd 'abs_path';
use Getopt::Long qw(:config no_autoabbrev);
use Pod::Usage;

use TeXLive::TLUtils qw(platform platform_desc
   which getenv win32 unix info log debug tlwarn ddebug tldie
   get_system_tmpdir member process_logging_options rmtree
   mkdirhier make_var_skeleton make_local_skeleton install_package copy
   install_packages dirname setup_programs native_slashify forward_slashify);
#use TeXLive::TLMedia;
use TeXLive::TLPOBJ;
use TeXLive::TLPDB;
use TeXLive::TLConfig;
use TeXLive::TLDownload;
use TeXLive::TLPaper;

if (win32) {
  require TeXLive::TLWinGoo;
  TeXLive::TLWinGoo->import( qw(
    &win_version
    &is_vista
    &admin
    &non_admin
    &reg_country
    &expand_string
    &global_tmpdir
    &get_system_path
    &get_user_path
    &setenv_reg
    &unsetenv_reg
    &adjust_reg_path_for_texlive
    &register_extension
    &unregister_extension
    &register_file_type
    &unregister_file_type
    &broadcast_env
    &update_assocs
    &add_desktop_shortcut
    &add_menu_shortcut
    &remove_desktop_shortcut
    &remove_menu_shortcut
    &create_uninstaller
  ));
}

use strict;

# global list of lines that get logged (see TLUtils.pm::_logit).
@::LOGLINES = ();

# global list of warnings
@::WARNLINES = ();

# we play around with the environment, place to keep original
my %origenv = ();

# $install{$packagename} == 1 if it should be installed
my %install;

# the different modules have to assign a code blob to this global variable
# which starts the installation.
# Example: In install-menu-text.pl there is
#   $::run_menu = \&run_menu_text;
#
$::run_menu = sub { die "no UI defined." ; };

# the default scheme to be installed
my $default_scheme='scheme-full';

# some arrays where the lists of collections to be installed are saved
# our for menus
our @collections_std;
our @collections_lang;
our @collections_lang_doc;
# The global variable %vars is an associative list which contains all
# variables and their values which can be changed by the user.
# needs to be our since TeXLive::TLUtils uses it
#
# The following values are taken from the remote tlpdb using the
#   $tlpdb->option_XXXXX
# settings (i.e., taken from tlpkg/tlpsrc/00texlive.installation.tlpsrc
#
#        'option_path' => 0,
#        'option_sys_bin' => '/usr/local/bin',
#        'option_sys_man' => '/usr/local/man',
#        'option_sys_info' => '/usr/local/info',
#        'option_doc' => 1,
#        'option_src' => 1,
#        'option_fmt' => 0,
#        'option_letter' => 0,
our %vars=( # 'n_' means 'number of'.
        'this_platform' => '',
        'n_systems_available' => 0,
        'n_systems_selected' => 0,
        'n_collections_selected' => 0,
        'n_collections_available' => 0,
        'total_size' => 0,
        'src_splitting_supported' => 1,
        'doc_splitting_supported' => 1,
        'selected_scheme' => $default_scheme,
        'in_place' => 0,
        'portable' => 0,
    );

# option handling
my $opt_in_place = 0;
my $opt_gui = (win32() ? "wizard" : "text");
my $opt_help = 0;
my $opt_location = "";
my $opt_no_gui = 0;
my $opt_nonadmin = 0;
my $opt_portable = 0;
my $opt_print_arch = 0;
my $opt_profileseed = "";
my $opt_profile = "";
my $opt_scheme = "";
my $opt_custom_bin;
my $opt_version = 0;
my $opt_force_arch;
my $opt_persistent_downloads = 1;
my $opt_allow_ftp = 0;

# show all options even those not relevant for that arch
$::opt_all_options = 0;

# default language for GUI installer
$::lang = "en";

# use the fancy directory selector for TEXDIR
$::alternative_selector = 0;

# do not debug translations by default
$::debug_translation = 0;

#
# some strings to describe the different meanings of option_file_assoc
$::fileassocdesc[0] = "None";
$::fileassocdesc[1] = "Only new";
$::fileassocdesc[2] = "All";

# if we find a file installation.profile we ask the user whether we should
# continue with the installation
# note, we are in the installer directory.
if (-r "installation.profile") {
  print "ABORTED INSTALLATION FOUND: installation.profile\n";
  print "Do you want to continue with the exact same settings as before (y/N): ";
  my $answer = <STDIN>;
  if ($answer =~ m/^y(es)?$/i) {
    $opt_profile = "installation.profile";
  }
}


# first process verbosity/quiet options
process_logging_options();
# now the others
GetOptions(
           "custom-bin=s"   => \$opt_custom_bin,
           "fancyselector"  => \$::alternative_selector,
           "in-place"       => \$opt_in_place,
           "gui:s"          => \$opt_gui,
           "lang=s"         => \$::opt_lang,
           "location|url|repository|repo=s"	=> \$opt_location,
           "no-cls",	    # $::opt_no_cls in install-menu-text-pl
           "no-gui"         => \$opt_no_gui,
           "non-admin"      => \$opt_nonadmin,
           "portable"       => \$opt_portable,
           "print-platform|print-arch"		=> \$opt_print_arch,
           "force-platform|force-arch=s"	=> \$opt_force_arch,
           "debug-translation" => \$::debug_translation,
           "profile-seed=s" => \$opt_profileseed,
           "profile=s"      => \$opt_profile,
           "scheme=s"       => \$opt_scheme,
           "all-options"    => \$::opt_all_options,
           "persistent-downloads!"		=> \$opt_persistent_downloads,
           "version"        => \$opt_version,
           "help|?"         => \$opt_help) or pod2usage(1);

if ($opt_gui eq "") {
  # the --gui option was given with an empty argument, set it to perltk
  $opt_gui = "perltk";
}
if ($opt_gui eq "expert") {
  $opt_gui = "perltk";
}

if (win32()) {
  pod2usage(-exitstatus => 0,
            -verbose => 2,
            -noperldoc => 1,
            -output  => \*STDOUT) if $opt_help;
} else {
  pod2usage(-exitstatus => 0, -verbose => 2, -file => $0) if $opt_help;
}

if ($opt_version) {
  print "install-tl (TeX Live Cross Platform Installer)",
        " revision $::installerrevision\n";
  if (open (REL_TL, "$::installerdir/release-texlive.txt")) {
    # print first and last lines, which have the TL version info.
    my @rel_tl = <REL_TL>;
    print $rel_tl[0];
    print $rel_tl[$#rel_tl];
    close (REL_TL);
  }
  if ($::opt_verbosity > 0) {
    print "Revision of modules:";
    print "\nTLConfig: " . TeXLive::TLConfig->module_revision();
    print "\nTLUtils:  " . TeXLive::TLUtils->module_revision();
    print "\nTLPOBJ:   " . TeXLive::TLPOBJ->module_revision();
    print "\nTLPDB:    " . TeXLive::TLPDB->module_revision();
    print "\nTLWinGoo: " . TeXLive::TLWinGoo->module_revision() if win32();
    print "\n";
  }
  exit 0;
}

die "Options custom-bin and in-place are incompatible."
  if ($opt_in_place and $opt_custom_bin);

die "Options profile and in-place are incompatible."
  if ($opt_in_place and $opt_profile);

die "Options profile-seed and in-place are incompatible."
  if ($opt_in_place and $opt_profileseed);

if ($#ARGV >= 0) {
  # we still have arguments left, should only be gui, otherwise die
  if ($ARGV[0] =~ m/^gui$/i) {
    $opt_gui = "perltk";
  } else {
    die "$0: Extra arguments `@ARGV'; try --help if you need it.\n";
  }
}


if (defined($::opt_lang)) {
  $::lang = $::opt_lang;
}

if ($opt_profile) { # for now, not allowed if in_place
  if (-r $opt_profile) {
    info("Automated TeX Live installation using profile: $opt_profile\n");
  } else {
    $opt_profile = "";
    info("Profile $opt_profile not readable, continuing in interactive mode.\n");
  }
}

if ($opt_nonadmin and win32()) {
  non_admin();
}


# the TLPDB instances we will use. $tlpdb is for the one from the installation
# media, while $localtlpdb is for the new installation
# $tlpdb must be our because it is used in install-menu-text.pl
our $tlpdb;
my $localtlpdb;
my $location;

# $finished == 1 if the menu call already did the installation
my $finished = 0;
@::info_hook = ();

my $system_tmpdir=get_system_tmpdir();
my $media;
our @media_available;

# special uses of install-tl:
if ($opt_print_arch) {
  print platform()."\n";
  exit 0;
}


# continuing with normal install

# check as soon as possible for GUI functionality to give people a chance
# to interrupt.
if (($opt_gui ne "text") && !$opt_no_gui && ($opt_profile eq "")) {
  # try to load Tk.pm, but don't die if it doesn't work
  eval { require Tk; };
  if ($@) {
    # that didn't work out, so warn the user and continue with text mode
    tlwarn("Cannot load Tk, maybe something is missing and\n");
    tlwarn("maybe http://tug.org/texlive/distro.html#perltk can help.\n");
    tlwarn("Error message from loading Tk:\n");
    tlwarn("  $@\n");
    tlwarn("Continuing in text mode...\n");
    $opt_gui = "text";
  }
  eval { my $foo = Tk::MainWindow->new; $foo->destroy; };
  if ($@) {
    tlwarn("perl/Tk unusable, cannot create main windows.\n");
    if (platform() eq "universal-darwin") {
      tlwarn("That could be because X11 is not installed or started.\n");
    }
    tlwarn("Error message from creating MainWindow:\n");
    tlwarn("  $@\n");
    tlwarn("Continuing in text mode...\n");
    $opt_gui = "text";
  }
  if ($opt_gui eq "text") {
    # we switched from GUI to non-GUI mode, tell the user and wait a bit
    tlwarn("\nSwitching to text mode installer, if you want to cancel, do it now.\n");
    tlwarn("Waiting for 3 second\n");
    sleep(3);
  }
}

#
if (defined($opt_force_arch)) {
  tlwarn("Overriding platform to $opt_force_arch\n");
  $::_platform_ = $opt_force_arch;
}

# initialize the correct platform
platform();
$vars{'this_platform'} = $::_platform_;

# we do not support cygwin < 1.7, so check for that
if (!$opt_custom_bin && (platform() eq "i386-cygwin")) {
  chomp( my $un = `uname -r`);
  if ($un =~ m/^(\d+)\.(\d+)\./) {
    if ($1 < 2 && $2 < 7) {
      tldie("\nSorry, the TL binaries require at least cygwin 1.7.\n");
    }
  }
}

if (!setup_programs ("$::installerdir/tlpkg/installer", "$::_platform_")) {
  tldie("$0: Goodbye.\n");
}

# determine where we will find the distribution to install from.
#
$location = $opt_location;
$location || ($location = "$::installerdir");
if ($location =~ m!^(ctan$|(http|ftp)://)!i) {
  $location =~ s,/(tlpkg|archive)?/*$,,;  # remove any trailing tlpkg or /
  if ($location =~ m/^ctan$/i) {
    $location = TeXLive::TLUtils::give_ctan_mirror();
  } elsif ($location =~ m/^$TeXLiveServerURL/) {
    my $mirrorbase = TeXLive::TLUtils::give_ctan_mirror_base();
    $location =~ s,^($TeXLiveServerURL|ctan$),$mirrorbase,;
  }
  $TeXLiveURL = $location;
  $media = 'NET';
  @media_available = qw/NET/;
} else {
  # remove leading file:/+ part
  $location =~ s!^file://*!/!i;
  $location = abs_path($location);
  # remove trailing \ or / (e.g. root of dvd drive on w32)
  $location =~ s,[\\\/]$,,;
  if (-d "$location/$Archive") {
    push @media_available, 'local_compressed';
  }

  if (-d "$location/texmf/web2c") {
    push @media_available, 'local_uncompressed';
  }

  if (member('local_compressed', @media_available)) {
    $media = 'local_compressed';
    # for in_place option we want local_uncompressed media
    $media = 'local_uncompressed' if $opt_in_place &&
      member('local_uncompressed', @media_available);
  } elsif (member('local_uncompressed', @media_available)) {
    $media = 'local_uncompressed';
  } else {
    if ($opt_location) {
      # user gave a --location but nothing can be found there, so die
      die "$0: cannot find installation source at $opt_location.\n";
    }
    # no --location given, but NET installation
    $TeXLiveURL = $location = TeXLive::TLUtils::give_ctan_mirror();
    $media = 'NET';
  }
}
info("Installing TeX Live $TeXLive::TLConfig::ReleaseYear from: $location\n");

info("Platform: ", platform(), " => \'", platform_desc(platform), "\'\n");
if ($opt_custom_bin) {
  if (-d $opt_custom_bin && (-r "$opt_custom_bin/kpsewhich"
                             || -r "$opt_custom_bin/kpsewhich.exe")) {
    info("Platform overridden, binaries taken from $opt_custom_bin\n"
         . "and will be installed into .../bin/custom.\n");
  } else {
    tldie("$opt_custom_bin: Argument to -custom-bin must be a directory "
          . "with TeX Live binaries.\n");
  }
}
if ($media eq "local_uncompressed") {
  info("Distribution: live (uncompressed)\n");
} elsif ($media eq "local_compressed") {
  info("Distribution: inst (compressed)\n");
} elsif ($media eq "NET") {
  info("Distribution: net  (downloading)\n");
  info("Using URL: $TeXLiveURL\n");
  TeXLive::TLUtils::setup_persistent_downloads() if $opt_persistent_downloads;
} else {
  info("Distribution: $media\n");
}
info("Directory for temporary files: $system_tmpdir\n");

if ($opt_in_place and ($media ne "local_uncompressed")) {
  print "TeX Live not local or not decompressed; 'in_place' option not applicable\n";
  $opt_in_place = 0;
} elsif ($opt_in_place and (!TeXLive::TLUtils::texdir_check($::installerdir))) {
  print "Installer dir not writable; 'in_place' option not applicable\n";
  $opt_in_place = 0;
}
$vars{'in_place'} = $opt_in_place;
$opt_scheme = "" if $opt_in_place;
$vars{'portable'} = $opt_portable;

load_tlpdb();

log("Installer revision: $::installerrevision\n");
log("Database revision: " . $tlpdb->config_revision . "\n");

# correctly set the splitting support
# for local_uncompressed we always support splitting
if (($media eq "NET") || ($media eq "local_compressed")) {
  $vars{'src_splitting_supported'} = $tlpdb->config_src_container;
  $vars{'doc_splitting_supported'} = $tlpdb->config_doc_container;
}
$texlive_release = $tlpdb->config_release;
if ($media eq "local_uncompressed") {
  # existing installation may not have 00texlive.config metapackage
  # so use TLConfig to establish what release we have
  $texlive_release ||= $TeXLive::TLConfig::ReleaseYear;
}

# if the release from the remote TLPDB does not agree with the
# TLConfig::ReleaseYear in the first 4 places break out here.
# Why only the first four places: some optional network distributions
# might use
#   release/2009-foobar
if ($media eq "NET"
    && $texlive_release !~ m/^$TeXLive::TLConfig::ReleaseYear/) {
  die <<END_MISMATCH;
$0: The TeX Live versions of the local installation
and the repository being accessed are not compatible:
      local: $TeXLive::TLConfig::ReleaseYear
 repository: $texlive_release
Perhaps you need to use a different CTAN mirror?
END_MISMATCH
}

set_platforms_supported();
set_texlive_default_dirs();
set_install_platform();
initialize_collections();

# initialize the scheme from the command line value, if given.
if ($opt_scheme) {
  # add the scheme- prefix if they didn't give it.
  $opt_scheme = "scheme-$opt_scheme" if $opt_scheme !~ /^scheme-/;
  my $scheme = $tlpdb->get_package($opt_scheme);
  if (defined($scheme)) {
    select_scheme($opt_scheme);  # select it
  } else {
    tlwarn("Scheme $opt_scheme not defined, ignoring it.\n");
  }
}


if ($opt_profile eq "") {
  if ($opt_profileseed) {
    read_profile("$opt_profileseed");
  }
  # do the normal interactive installation.
  #
  # here we could load different menu systems. Currently several things
  # are "our" so that the menu implementation can use it. The $tlpdb, the
  # %var, and all the @collection*
  # install-menu-*.pl have to assign a code ref to $::run_menu which is
  # run, and should change ONLY stuff in %vars
  # The allowed keys in %vars should be specified somewhere ...
  # the menu implementation should return
  #    MENU_INSTALL  do the installation
  #    MENU_ABORT    abort every action immediately, no cleanup
  #    MENU_QUIT     try to quit and clean up mess
  our $MENU_INSTALL = 0;
  our $MENU_ABORT   = 1;
  our $MENU_QUIT    = 2;
  our $MENU_ALREADYDONE = 3;
  $opt_gui = "text" if ($opt_no_gui);
  # finally do check for additional screens in the $opt_gui setting:
  # format:
  #   --gui <plugin>:<a1>,<a2>,...
  # which will passed to run_menu (<a1>, <a2>, ...)
  #
  my @runargs;
  if ($opt_gui =~ m/^([^:]*):(.*)$/) {
    $opt_gui = $1;
    @runargs = split ",", $2;
  }
  if (-r "$::installerdir/tlpkg/installer/install-menu-${opt_gui}.pl") {
    require("installer/install-menu-${opt_gui}.pl");
  } else {
    tlwarn("UI plugin $opt_gui not found,\n");
    tlwarn("Using text mode installer.\n");
    require("installer/install-menu-text.pl");
  }

  # before we start the installation we check for the existence of
  # a previous installation, and in case we ship inform the UI
  {
    my $tlmgrwhich = which("tlmgr");
    if ($tlmgrwhich) {
      my $dn = dirname($tlmgrwhich);
      $dn = abs_path("$dn/../..");
      # The "make Karl happy" case, check that we are not running install-tl
      # from the same tree where tlmgr is hanging around
      my $install_tl_root = abs_path($::installerdir);
      my $tlpdboldpath = "$dn/$TeXLive::TLConfig::InfraLocation/$TeXLive::TLConfig::DatabaseName";
      if (-r $tlpdboldpath && $dn ne $install_tl_root) {
        debug ("found old installation in $dn\n");
        push @runargs, "-old-installation-found=$dn";
      }
    }
  }

  my $ret = &{$::run_menu}(@runargs);
  if ($ret == $MENU_QUIT) {
    do_cleanup();
    flushlog();
    exit(1);
  }
  if ($ret == $MENU_ABORT) {
    # omit do_cleanup().
    flushlog();
    exit(2);
  }
  if ($ret == $MENU_ALREADYDONE) {
    debug("run_menu has already done the work ... cleaning up.\n");
    $finished = 1;
  }
  if (!$finished && ($ret != $MENU_INSTALL)) {
    tlwarn("Unknown return value of run_menu: $ret\n");
    exit(3);
  }
} else {
  read_profile($opt_profile);
}

my $varsdump;
foreach my $key (sort keys %vars) {
  $varsdump.="  $key: \"" . $vars{$key} . "\"\n";
}

log("Settings:\n" . $varsdump);

if (!$finished) {
  # do the actual installation
  # win32: first, remove trailing slash from texdir[w]
  # in case it is the root of a drive
  $vars{'TEXDIR'} =~ s![/\\]$!!;
  #$vars{'TEXDIRW'} = $vars{'TEXDIR'}; # no longer used
  sanitise_options();
  info("Installing to: $vars{TEXDIR}\n");
  do_installation();
}

do_cleanup();

exit(0);


###################################################################
#
# FROM HERE ON ONLY SUBROUTINES
# NO VARIABLE DECLARATIONS
#
###################################################################

sub do_installation {
  install_warnlines_hook();
  if (win32()) {
    non_admin() if !$vars{'option_w32_multi_user'};
  }
  if ($vars{'n_collections_selected'} <= 0) {
    tlwarn("Nothing selected, nothing to install, exiting!\n");
    exit 1;
  }
  # remove final slash from TEXDIR even if it is the root of a drive
  $vars{'TEXDIR'} =~ s!/$!!;
  # do the actual installation
  make_var_skeleton "$vars{'TEXMFSYSVAR'}";
  make_local_skeleton "$vars{'TEXMFLOCAL'}";
  mkdirhier "$vars{'TEXMFSYSCONFIG'}";

  if ($vars{'in_place'}) {
    $localtlpdb = $tlpdb;
  } else {
    $localtlpdb=new TeXLive::TLPDB;
    $localtlpdb->root("$vars{'TEXDIR'}");
  }
  if (!$vars{'in_place'}) {
    calc_depends();
    save_options_into_tlpdb();
    do_install_packages();
    if ($opt_custom_bin) {
      $vars{'this_platform'} = "custom";
      my $TEXDIR="$vars{'TEXDIR'}";
      mkdirhier("$TEXDIR/bin/custom");
      for my $f (<$opt_custom_bin/*>) {
        copy($f, "$TEXDIR/bin/custom");
      }
    }
  }
  # now we save every scheme that is fully covered by the stuff we have
  # installed to the $localtlpdb
  foreach my $s ($tlpdb->schemes) {
    my $stlp = $tlpdb->get_package($s);
    die ("That cannot happen, $s not defined in tlpdb") unless defined($stlp);
    my $incit = 1;
    foreach my $d ($stlp->depends) {
      if (!defined($localtlpdb->get_package($d))) {
        $incit = 0;
        last;
      }
    }
    if ($incit) {
      $localtlpdb->add_tlpobj($stlp);
    }
  }
  $localtlpdb->save unless $vars{'in_place'};
  do_postinst_stuff();
  if (win32() || $vars{'portable'}) {
    print welcome();
  } else {
    print welcome_paths();
  }
  print warnings_summary();
}

# do_postinst_stuff has to fix up the texmf tree and install some missing
# files. The things to do are taken from the install-live.sh installer
# of former times, and should be critically checked.
sub do_postinst_stuff {
  my $TEXDIR="$vars{'TEXDIR'}";
  my $TEXMFSYSVAR="$vars{'TEXMFSYSVAR'}";
  my $TEXMFSYSCONFIG="$vars{'TEXMFSYSCONFIG'}";
  my $TEXMFVAR="$vars{'TEXMFVAR'}";
  my $TEXMFCONFIG="$vars{'TEXMFCONFIG'}";
  my $TEXMFLOCAL="$vars{'TEXMFLOCAL'}";
  my $tmv;

  do_texmf_cnf();

  #
  # clean up useless files in texmf-dist/tlpkg as this is only
  # created by the relocatable packages
  if (-d "$TEXDIR/$TeXLive::TLConfig::RelocTree/tlpkg") {
    rmtree("$TEXDIR/TeXLive::TLConfig::RelocTree/tlpkg");
  }

  #
  # create package backup directory for tlmgr autobackup to work
  mkdirhier("$TEXDIR/$TeXLive::TLConfig::PackageBackupDir");

  # final program execution
  # we have to do several things:
  # - clean the environment from spurious TEXMF related variables
  # - add the bin dir to the PATH
  # - select perl interpreter and set the correct perllib
  # - run the programs

  # Step 1: Clean the environment.
  %origenv = %ENV;
  my @TMFVARS=qw(VARTEXFONTS
    TEXMF SYSTEXMF VARTEXFONTS
    TEXMFDBS WEB2C TEXINPUTS TEXFORMATS MFBASES MPMEMS TEXPOOL MFPOOL MPPOOL
    PSHEADERS TEXFONTMAPS TEXPSHEADERS TEXCONFIG TEXMFCNF
    TEXMFMAIN TEXMFDIST TEXMFLOCAL TEXMFSYSVAR TEXMFSYSCONFIG
    TEXMFVAR TEXMFCONFIG TEXMFHOME TEXMFCACHE);

  if (defined($ENV{'TEXMFCNF'})) {
    print "WARNING: environment variable TEXMFCNF is set.
You should know what you are doing.
We will remove that for the post install actions, but all further
operations might be disturbed.\n\n";
  }
  foreach $tmv (@TMFVARS) {
    delete $ENV{$tmv} if (defined($ENV{$tmv}));
  }

  # Step 2: Setup the PATH, switch to the new Perl

  my $pathsep=(win32)? ';' : ':';
  my $plat_bindir="$TEXDIR/bin/$vars{'this_platform'}";
  my $perl_bindir="$TEXDIR/tlpkg/tlperl/bin";
  my $perl_libdir="$TEXDIR/tlpkg/tlperl/lib";

## This won't do any good;
## have to remove other tex directories in calling batchfile
#  if (win32) {
#    debug("Removing other TeXs from path\n");
#    my @newpt = ();
#    foreach my $d (split (';', $ENV{'PATH'})) {
#      push @newpt, $d unless TeXLive::TLWinGoo::is_a_texdir($d);
#    }
#    $ENV{'PATH'} = join($pathsep, @newpt);
#    debug("Path after removals(s):\n  $ENV{'PATH'}\n");
#  }

  debug("Prepending $plat_bindir to PATH\n");

  $ENV{'PATH'}="$plat_bindir" . "$pathsep" . "$ENV{'PATH'}";

  if (win32) {
    debug("Prepending $perl_bindir to PATH\n");
    $ENV{'PATH'}="$perl_bindir" . "$pathsep" . "$ENV{'PATH'}";
    $ENV{'PATH'} =~ s!/!\\!g;
  }

  debug("\nNew PATH is now:\n");
  foreach my $dir (split $pathsep, $ENV{'PATH'}) {
    debug("  $dir\n");
  }
  debug("\n");

  if (win32) {
    $ENV{'PERL5LIB'}="$perl_libdir";
  }

  #
  # post install actions
  #

  my $usedtlpdb = $vars{'in_place'} ? $tlpdb : $localtlpdb;


  if (win32()) {
    debug "Actual environment:\n".`set`."\n\n";
    debug 'Effective TEXMFCNF: '.`kpsewhich -expand-path=\$TEXMFCNF`."\n";
  }

  if (win32() and !$vars{'portable'} and !$vars{'in_place'}) {
    create_uninstaller($vars{'TEXDIR'},
      $vars{'TEXMFSYSVAR'}, $vars{'TEXMFSYSCONFIG'});
    # TODO: custom uninstaller for in_place
    # (re-)initialize batchfile for uninstalling shortcuts
  }

  # Step 4: run the programs

  if (!$vars{'in_place'}) {
    info("running mktexlsr $TEXDIR/texmf-dist $TEXDIR/texmf...\n");
    system('mktexlsr', "$TEXDIR/texmf-dist", "$TEXDIR/texmf");
  }

  # we have to generate the various config file. That could be done with
  # texconfig generate * but Win32 does not have texconfig. But we have
  # $localtlpdb and this is simple code, so do it directly, i.e., duplicate
  # the code from the various generate-*.pl scripts

  info("writing fmtutil.cnf to $TEXMFSYSVAR/web2c/fmtutil.cnf\n");
  TeXLive::TLUtils::create_fmtutil($usedtlpdb,
    "$TEXMFSYSVAR/web2c/fmtutil.cnf",
    "$TEXMFLOCAL/web2c/fmtutil-local.cnf");

  mkdirhier "$vars{'TEXMFSYSCONFIG'}/web2c";
  info("writing updmap.cfg to $TEXMFSYSCONFIG/web2c/updmap.cfg\n");
  TeXLive::TLUtils::create_updmap ($usedtlpdb,
    "$TEXMFSYSCONFIG/web2c/updmap.cfg",
    "$TEXMFLOCAL/web2c/updmap-local.cfg");

  info("writing language.dat to $TEXMFSYSVAR/tex/generic/config/language.dat\n");
  TeXLive::TLUtils::create_language_dat($usedtlpdb,
    "$TEXMFSYSVAR/tex/generic/config/language.dat",
    "$TEXMFLOCAL/tex/generic/config/language-local.dat");

  info("writing language.def to $TEXMFSYSVAR/tex/generic/config/language.def\n");
  TeXLive::TLUtils::create_language_def($usedtlpdb,
    "$TEXMFSYSVAR/tex/generic/config/language.def",
    "$TEXMFLOCAL/tex/generic/config/language-local.def");

  info("writing language.dat.lua to $TEXMFSYSVAR/tex/generic/config/language.dat.lua\n");
  TeXLive::TLUtils::create_language_lua($usedtlpdb,
    "$TEXMFSYSVAR/tex/generic/config/language.dat.lua",
    "$TEXMFLOCAL/tex/generic/config/language-local.dat.lua");

  info("running mktexlsr $TEXMFSYSVAR $TEXMFSYSCONFIG...\n");
  system("mktexlsr", $TEXMFSYSVAR, $TEXMFSYSCONFIG);

  info("running updmap-sys...");
  # system('updmap-sys', '--nohash');
  log(`updmap-sys --nohash 2>&1`);
  info("done\n");

  # now work through the options if specified at all

  # letter instead of a4
  if ($vars{'option_letter'}) {
    # set paper size, but do not execute any post actions, in this case
    # it would be:
    #   - mktexlsr
    #   - fmtutil-sys -all
    info("setting default paper size to letter\n");
    log(`tlmgr --no-execute-actions paper letter 2>&1`);
  }

  # now rerun mktexlsr for updmap-sys and tlmgr paper letter updates.
  info("re-running mktexlsr $TEXMFSYSVAR $TEXMFSYSCONFIG...\n");
  system("mktexlsr", $TEXMFSYSVAR, $TEXMFSYSCONFIG);

  # luatex/context
  if (exists($install{"context"}) && $install{"context"} == 1
      && !exists $ENV{"TEXLIVE_INSTALL_NO_CONTEXT_CACHE"}) {
    info("setting up ConTeXt MkIV cache with mtxrun --generate ...");
    system('mtxrun', '--generate');
    info("done\n");
  }

  # all formats option
  if ($vars{'option_fmt'}) {
    info("pre-generating all format files (fmtutil-sys --all), be patient...");
    log(`fmtutil-sys --all 2>&1`);
    info("done\n");
  }

  #
  # do path adjustments: On Windows add/remove to PATH etc,
  # on Unix set symlinks
  # for portable, this option should be unset
  # it should not be necessary to test separately for portable
  do_path_adjustments() if $vars{'option_path'};

  # now do the system integration:
  # on unix this means setting up symlinks
  # on w32 this means adding to path, settting registry values
  # on both, we run the postaction directives of the tlpdb
  # no need to test for portable or in_place:
  # the menus (or profile?) should have set the required options
  do_tlpdb_postactions();
  copy("$::installerdir/tlpkg/installer/tlmenu.bat", $TEXDIR)
    if $vars{'portable'};
}


sub do_tlpdb_postactions {
  info ("running package specific postactions\n");
  # Run the post installation code in the postaction tlpsrc entries
  # For now the option_desktop_integrations maps to both desktop
  # and menu entries, but we can split that later
  # option settings already reflect portable- and in_place options.
  my $usedtlpdb = $vars{'in_place'} ? $tlpdb : $localtlpdb;
  foreach my $package ($usedtlpdb->list_packages) {
    &TeXLive::TLUtils::do_postaction("install",
                                     $usedtlpdb->get_package($package),
                                     $vars{'option_file_assocs'},
                                     $vars{'option_desktop_integration'},
                                     $vars{'option_desktop_integration'},
                                     $vars{'option_post_code'});
  }
  info ("finished with package specific postactions\n");
}

sub do_path_adjustments {
  info ("running path adjustment actions\n");
  if (win32()) {
    TeXLive::TLUtils::w32_add_to_path($vars{'TEXDIR'}.'/bin/win32',
      $vars{'option_w32_multi_user'});
    broadcast_env();
  } else {
    TeXLive::TLUtils::add_symlinks($vars{'TEXDIR'}, $vars{'this_platform'},
      $vars{'option_sys_bin'}, $vars{'option_sys_man'},
      $vars{'option_sys_info'});
  }
  info ("finished with path adjustment actions\n");
}


# we have to adjust the texmf.cnf file to the paths set in the configuration!
sub do_texmf_cnf {
  open(TMF,"<$vars{'TEXDIR'}/texmf/web2c/texmf.cnf")
      or die "$vars{'TEXDIR'}/texmf/web2c/texmf.cnf not found: $!";
  my @texmfcnflines = <TMF>;
  close(TMF);

  my @changedtmf = ();  # install to disk: write only changed items

  my $yyyy = $TeXLive::TLConfig::ReleaseYear;

  # we have to find TEXMFLOCAL TEXMFSYSVAR and TEXMFHOME
  foreach my $line (@texmfcnflines) {
    if ($line =~ m/^TEXMFLOCAL/) {
      # by default TEXMFLOCAL = TEXDIR/../texmf-local, if this is the case
      # we don't have to write a new setting.
      my $deftmlocal = dirname($vars{'TEXDIR'});
      $deftmlocal .= "/texmf-local";
      if ("$vars{'TEXMFLOCAL'}" ne "$deftmlocal") {
        push @changedtmf, "TEXMFLOCAL = $vars{'TEXMFLOCAL'}\n";
      }
    } elsif ($line =~ m/^TEXMFSYSVAR/) {
      if ("$vars{'TEXMFSYSVAR'}" ne "$vars{'TEXDIR'}/texmf-var") {
        push @changedtmf, "TEXMFSYSVAR = $vars{'TEXMFSYSVAR'}\n";
      }
    } elsif ($line =~ m/^TEXMFSYSCONFIG/) {
      if ("$vars{'TEXMFSYSCONFIG'}" ne "$vars{'TEXDIR'}/texmf-config") {
        push @changedtmf, "TEXMFSYSCONFIG = $vars{'TEXMFSYSCONFIG'}\n";
      }
    } elsif ($line =~ m/^TEXMFVAR/) {
      if ($vars{"TEXMFVAR"} ne "~/.texlive$yyyy/texmf-var") {
        push @changedtmf, "TEXMFVAR = $vars{'TEXMFVAR'}\n";
      }
    } elsif ($line =~ m/^TEXMFCONFIG/) {
      if ("$vars{'TEXMFCONFIG'}" ne "~/.texlive$yyyy/texmf-config") {
        push @changedtmf, "TEXMFCONFIG = $vars{'TEXMFCONFIG'}\n";
      }
    } elsif ($line =~ m/^TEXMFHOME/) {
      if ("$vars{'TEXMFHOME'}" ne "~/texmf") {
        push @changedtmf, "TEXMFHOME = $vars{'TEXMFHOME'}\n";
      }
    } elsif ($line =~ m/^OSFONTDIR/) {
      if (win32()) {
        push @changedtmf, "OSFONTDIR = \$SystemRoot/fonts//\n";
      }
    }
  }

  if ($vars{'portable'}) {
    push @changedtmf, "ASYMPTOTE_HOME = \$TEXMFCONFIG/asymptote\n";
  }

  my ($TMF, $TMFLUA);
  # we want to write only changes to texmf.cnf
  # even for in_place installation
  $TMF = ">$vars{'TEXDIR'}/texmf.cnf";
  open(TMF, $TMF) || die "open($TMF) failed: $!";
  print TMF <<EOF;
% (Public domain.)
% This texmf.cnf file should contain only your personal changes from the
% original texmf.cnf (for example, as chosen in the installer).
%
% That is, if you need to make changes to texmf.cnf, put your custom
% settings in this file, which is .../texlive/YYYY/texmf.cnf, rather than
% the distributed file (which is .../texlive/YYYY/texmf/web2c/texmf.cnf).
% And include *only* your changed values, not a copy of the whole thing!
%
EOF
  foreach (@changedtmf) {
    # avoid absolute paths for TEXDIR, use $SELFAUTOPARENT instead
    s/^(TEXMF\w+\s*=\s*)\Q$vars{'TEXDIR'}\E/$1\$SELFAUTOPARENT/;
    print TMF;
  }
  #
  # save the setting of shell_escape to the generated system texmf.cnf
  # default in texmf/web2c/texmf.cnf is
  #   shell_escape = p
  # so we write that only if the user *deselected* this option
  if (!$vars{"option_write18_restricted"}) {
    print TMF <<EOF;

% Disable system commands via \\write18{...}.  See texmf/web2c/texmf.cnf.
shell_escape = 0
EOF
;
  }
  close(TMF) || warn "close($TMF) failed: $!";

  $TMFLUA = ">$vars{'TEXDIR'}/texmfcnf.lua";
  open(TMFLUA, $TMFLUA) || die "open($TMFLUA) failed: $!";
    print TMFLUA <<EOF;
-- (Public domain.)
-- This texmfcnf.lua file should contain only your personal changes from the
-- original texmfcnf.lua (for example, as chosen in the installer).
--
-- That is, if you need to make changes to texmfcnf.lua, put your custom
-- settings in this file, which is .../texlive/YYYY/texmfcnf.lua, rather than
-- the distributed file (which is .../texlive/YYYY/texmf/web2c/texmfcnf.lua).
-- And include *only* your changed values, not a copy of the whole thing!

return { 
  content = {
    variables = {
EOF
;
  foreach (@changedtmf) {
    my $luavalue = $_;
    $luavalue =~ s/^(\w+\s*=\s*)(.*)\s*$/$1\"$2\",/;
    $luavalue =~ s/\$SELFAUTOPARENT/selfautoparent:/g;
    print TMFLUA "      $luavalue\n";
  }
  print TMFLUA "    },\n";
  print TMFLUA "  },\n";
  if (!$vars{"option_write18_restricted"}) {
    print TMFLUA <<EOF;
  directives = {
       -- Disable system commands.  See texmf/web2c/texmfcnf.lua
    ["system.commandmode"]       = "none",
  },
EOF
;
  }
  print TMFLUA "}\n";
  close(TMFLUA) || warn "close($TMFLUA) failed: $!";
}


sub dump_vars {
  my $filename=shift;
  my $fh;
  if (ref($filename)) {
    $fh = $filename;
  } else {
    open VARS, ">$filename";
    $fh = \*VARS;
  }
  foreach my $key (keys %vars) {
    print $fh "$key $vars{$key}\n";
  }
  close VARS if (!ref($filename));
  debug("\n%vars dumped to '$filename'.\n");
}


# Determine which platforms are supported.
sub set_platforms_supported {
  my @binaries = $tlpdb->available_architectures;
  for my $binary (@binaries) {
    unless (defined $vars{"binary_$binary"}) {
      $vars{"binary_$binary"}=0;
    }
  }
  for my $key (keys %vars) {
    ++$vars{'n_systems_available'} if ($key=~/^binary/);
  }
}

# Environment variables and default values on UNIX:
#   TEXLIVE_INSTALL_PREFIX         /usr/local/texlive   => $tex_prefix
#   TEXLIVE_INSTALL_TEXDIR         $tex_prefix/2010     => $TEXDIR
#   TEXLIVE_INSTALL_TEXMFSYSVAR    $TEXDIR/texmf-var
#   TEXLIVE_INSTALL_TEXMFSYSCONFIG $TEXDIR/texmf-config
#   TEXLIVE_INSTALL_TEXMFLOCAL     $tex_prefix/texmf-local
#   TEXLIVE_INSTALL_TEXMFVAR       ~/.texlive2010/texmf-var
#   TEXLIVE_INSTALL_TEXMFCONFIG    ~/.texlive2010/texmf-config
#   TEXLIVE_INSTALL_TEXMFHOME      '$HOME/texmf'

sub set_texlive_default_dirs {
  my $tex_prefix = $vars{'in_place'} ? abs_path($::installerdir)
                                     : getenv('TEXLIVE_INSTALL_PREFIX');
  if (win32) {
    $tex_prefix ||= getenv('SystemDrive') . '/texlive';
    # we use SystemDrive because ProgramFiles requires admin rights
    # we don't use USERPROFILE here because that will be copied back and
    # forth on roaming profiles
  } else {
    $tex_prefix ||= '/usr/local/texlive';
  }
  # for portable and in_place installation we want everything in one directory
  $vars{'TEXDIR'} = ($vars{'portable'} || $vars{'in_place'})
                     ? $tex_prefix : "$tex_prefix/$texlive_release";

  my $texmfsysvar = getenv('TEXLIVE_INSTALL_TEXMFSYSVAR');
  $texmfsysvar ||= $vars{'TEXDIR'} . '/texmf-var';
  $vars{'TEXMFSYSVAR'} = $texmfsysvar;

  my $texmfsysconfig = getenv('TEXLIVE_INSTALL_TEXMFSYSCONFIG');
  $texmfsysconfig ||= $vars{'TEXDIR'} . '/texmf-config';
  $vars{'TEXMFSYSCONFIG'}=$texmfsysconfig;

  my $texmflocal = getenv('TEXLIVE_INSTALL_TEXMFLOCAL');
  $texmflocal ||= "$tex_prefix/texmf-local";
  $vars{'TEXMFLOCAL'} = $texmflocal;

  $vars{'TEXDIR'} = $vars{'in_place'}
                    ? abs_path($::installerdir) : $vars{'TEXDIR'};

  my $texmfhome = getenv('TEXLIVE_INSTALL_TEXMFHOME');
  $texmfhome ||= "~";
  $vars{'TEXMFHOME'}="$texmfhome/texmf";

  # use the $texmfhome value just computed for these.
  my $yyyy = $TeXLive::TLConfig::ReleaseYear;
  my $texmfvar = getenv('TEXLIVE_INSTALL_TEXMFVAR');
  $texmfvar ||= "$texmfhome/.texlive$yyyy/texmf-var";
  $vars{'TEXMFVAR'} = $texmfvar;

  my $texmfconfig = getenv('TEXLIVE_INSTALL_TEXMFCONFIG');
  $texmfconfig ||= "$texmfhome/.texlive$yyyy/texmf-config";
  $vars{'TEXMFCONFIG'} = $texmfconfig;

  # for portable installation we want everything in one directory
  if ($vars{'portable'}) {
    $vars{'TEXMFHOME'}   = "\$TEXMFLOCAL";
    $vars{'TEXMFVAR'}    = "\$TEXMFSYSVAR";
    $vars{'TEXMFCONFIG'} = "\$TEXMFSYSCONFIG";
  }
}

sub calc_depends {
  # we have to reset the install hash EVERY TIME otherwise everything will
  # always be installed since the default is scheme-full which selects
  # all packages and never deselects it
  %install=();
  my $p;
  my $a;

  # initialize the %install hash with what should be installed

  if ($vars{'selected_scheme'} ne "scheme-custom") {
    # First look for packages in the selected scheme.
    my $scheme=$tlpdb->get_package($vars{'selected_scheme'});
    if (!defined($scheme)) {
      if ($vars{'selected_scheme'}) {
        # something is written in the selected scheme but not defined, that
        # is strange, so warn and die
        die ("Scheme $vars{'selected_scheme'} not defined, vars:\n");
        dump_vars(\*STDOUT);
      }
    } else {
      for my $scheme_content ($scheme->depends) {
        $install{"$scheme_content"}=1 unless ($scheme_content=~/^collection-/);
      }
    }
  }

  # Now look for collections in the %vars hash.  These are not
  # necessarily the collections required by a scheme.  The final
  # decision is made in the collections/languages menu.
  foreach my $key (keys %vars) {
    if ($key=~/^collection-/) {
      $install{$key} = 1 if $vars{$key};
    }
  }

  # compute the list of archs to be installed
  my @archs;
  foreach (keys %vars) {
    if (m/^binary_(.*)$/ ) {
      if ($vars{$_}) { push @archs, $1; }
    }
  }

  #
  # work through the addon settings in the %vars hash
  #if ($vars{'addon_editor'}) {
  #  $install{"texworks"} = 1;
  #}

  # if programs for arch=win32 are installed we also have to install
  # tlperl.win32 which provides the "hidden" perl that will be used
  # to run all the perl scripts.
  # Furthermore we install tlgs.win32 and tlpsv.win32, too
  if (grep(/^win32$/,@archs)) {
    $install{"tlperl.win32"} = 1;
    $install{"tlgs.win32"} = 1;
    $install{"tlpsv.win32"} = 1;
  }

  # loop over all the packages until it is getting stable
  my $changed = 1;
  while ($changed) {
    # set $changed to 0
    $changed = 0;

    # collect the already selected packages
    my @pre_selected = keys %install;
    debug("initial number of installations: $#pre_selected\n");

    # loop over all the pre_selected and add them
    foreach $p (@pre_selected) {
      ddebug("pre_selected $p\n");
      my $pkg = $tlpdb->get_package($p);
      if (!defined($pkg)) {
        tlwarn("$p is mentioned somewhere but not available, disabling it.\n");
        $install{$p} = 0;
        next;
      }
      foreach my $p_dep ($tlpdb->get_package($p)->depends) {
        if ($p_dep =~ m/^(.*)\.ARCH$/) {
          my $foo = "$1";
          foreach $a (@archs) {
            $install{"$foo.$a"} = 1 if defined($tlpdb->get_package("$foo.$a"));
          }
        } elsif ($p_dep =~ m/^(.*)\.win32$/) {
          # a win32 package should *only* be installed if we are installing
          # the win32 arch
          if (grep(/^win32$/,@archs)) {
            $install{$p_dep} = 1;
          }
        } else {
          $install{$p_dep} = 1;
        }
      }
    }

    # check for newly selected packages
    my @post_selected = keys %install;
    debug("number of post installations: $#post_selected\n");

    # set repeat condition
    if ($#pre_selected != $#post_selected) {
      $changed = 1;
    }
  }

  # now do the size computation
  my $size = 0;
  foreach $p (keys %install) {
    my $tlpobj = $tlpdb->get_package($p);
    if (not(defined($tlpobj))) {
      tlwarn("$p should be installed but "
             . "is not in texlive.tlpdb; disabling.\n");
      $install{$p} = 0;
      next;
    }
    $size+=$tlpobj->docsize if $vars{'option_doc'};
    $size+=$tlpobj->srcsize if $vars{'option_src'};
    $size+=$tlpobj->runsize;
    foreach $a (@archs) {
      $size += $tlpobj->binsize->{$a} if defined($tlpobj->binsize->{$a});
    }
  }
  $vars{'total_size'} =
    sprintf "%d", ($size * $TeXLive::TLConfig::BlockSize)/1024**2;
}

sub load_tlpdb {
  my $master = $location;
  info("Loading $master/$TeXLive::TLConfig::InfraLocation/$TeXLive::TLConfig::DatabaseName\n");
  $tlpdb = TeXLive::TLPDB->new(root => $master);
  if (!defined($tlpdb)) {
    my $do_die = 1;
    # if that failed, and:
    # - we are installing from the network
    # - the location string does not contain "tlnet"
    # then we simply add "/systems/texlive/tlnet" in case someone just
    # gave an arbitrary CTAN mirror address without the full path
    if ($media eq "NET" && $location !~ m/tlnet/) {
      tlwarn("First attempt for net installation failed;\n");
      tlwarn("  repository url does not contain \"tlnet\",\n");
      tlwarn("  retrying with \"/systems/texlive/tlnet\" appended.\n");
      $location .= "/systems/texlive/tlnet";
      $master = $location;
      #
      # since we change location, we reset the error count of the
      # download object
      $::tldownload_server->enable if defined($::tldownload_server);
      #
      $tlpdb = TeXLive::TLPDB->new(root => $master);
      if (!defined($tlpdb)) {
        tlwarn("Oh well, adding tlnet did not help.\n");
        tlwarn(<<END_EXPLICIT_MIRROR);

You may want to try specifying an explicit or different CTAN mirror;
see the information and examples for the -repository option at
http://tug.org/texlive/doc/install-tl.html
(or in the output of install-tl --help).

END_EXPLICIT_MIRROR
      } else {
        # hurray, that worked out
        info("Loading $master/$TeXLive::TLConfig::InfraLocation/$TeXLive::TLConfig::DatabaseName\n");
        $do_die = 0;
      }
    }
    die "$0: Could not load TeX Live Database from $master, goodbye.\n"
      if $do_die;
  }
  # set the defaults to what is specified in the tlpdb
  $vars{'option_doc'} = $tlpdb->option("install_docfiles");
  $vars{'option_src'} = $tlpdb->option("install_srcfiles");
  $vars{'option_fmt'} = $tlpdb->option("create_formats");
  $vars{'option_autobackup'} = $tlpdb->option("autobackup");
  $vars{'option_backupdir'} = $tlpdb->option("backupdir");
  $vars{'option_letter'} = defined($tlpdb->option("paper"))
                           && ($tlpdb->option("paper") eq "letter" ? 1 : 0);
  $vars{'option_desktop_integration'} = $tlpdb->option("desktop_integration");
  $vars{'option_desktop_integration'} = 1 if win32();
  $vars{'option_path'} = $tlpdb->option("path");
  $vars{'option_path'} = 0 if !defined($vars{'option_path'});
  $vars{'option_path'} = 1 if win32();
  $vars{'option_w32_multi_user'} = $tlpdb->option("w32_multi_user");
  # we have to make sure that this option is set to 0 in case
  # that a non-admin is running the installations program
  $vars{'option_w32_multi_user'} = 0 if (win32() && !admin());
  $vars{'option_file_assocs'} = $tlpdb->option("file_assocs");
  $vars{'option_post_code'} = $tlpdb->option("post_code");
  $vars{'option_sys_bin'} = $tlpdb->option("sys_bin");
  $vars{'option_sys_man'} = $tlpdb->option("sys_man");
  $vars{'option_sys_info'} = $tlpdb->option("sys_info");
  $vars{'option_write18_restricted'} = $tlpdb->option("write18_restricted");
  # this option is not stored in tlpdb if an existing installation is used
  $vars{'option_write18_restricted'} ||= 1;

  # check that the default scheme is actually present, otherwise switch to
  # scheme-minimal
  if (!defined($tlpdb->get_package($default_scheme))) {
    if (!defined($tlpdb->get_package("scheme-minimal"))) {
      die("Aborting, cannot find either $default_scheme or scheme_minimal");
    }
    $default_scheme = "scheme-minimal";
    $vars{'selected_scheme'} = $default_scheme;
  }
}

sub initialize_collections {
  foreach my $pkg ($tlpdb->list_packages) {
    my $tlpobj = $tlpdb->{'tlps'}{$pkg};
    if ($tlpobj->category eq "Collection") {
      $vars{"$pkg"}=0;
      ++$vars{'n_collections_available'};
      if ($pkg=~/collection-lang/) {
        push @collections_lang, $pkg;
      } elsif ($pkg=~/documentation/) {
        if ($pkg=~/documentation-base/) {
          push @collections_std, $pkg;
        } else {
          push @collections_lang_doc, $pkg;
        }
      } else {
        push @collections_std, $pkg;
      }
    }
  }
  my $scheme_tlpobj = $tlpdb->get_package($default_scheme);
  if (defined ($scheme_tlpobj)) {
    $vars{'n_collections_selected'}=0;
    foreach my $dependent ($scheme_tlpobj->depends) {
      if ($dependent=~/^(collection-.*)/) {
        $vars{"$1"}=1;
        ++$vars{'n_collections_selected'};
      }
    }
  }
  if ($vars{"binary_win32"}) {
    $vars{"collection-wintools"} = 1;
    ++$vars{'n_collections_selected'};
  }
}

sub set_install_platform {
  my $detected_platform=platform;
  if ($opt_custom_bin) {
    $detected_platform = "custom";
  }
  my $warn_nobin;
  my $warn_nobin_x86_64_linux;
  my $nowarn="";
  my $wp='***'; # warning prefix

  $warn_nobin="\n$wp WARNING: No binaries for your platform found.  ";
  $warn_nobin_x86_64_linux="$warn_nobin" .
      "$wp No binaries for x86_64-linux found, using i386-linux instead.\n";

  my $ret = $warn_nobin;
  if (defined $vars{"binary_$detected_platform"}) {
    $vars{"binary_$detected_platform"}=1;
    $vars{'inst_platform'}=$detected_platform;
    $ret = $nowarn;
  } elsif ($detected_platform eq 'x86_64-linux') {
    $vars{'binary_i386-linux'}=1;
    $vars{'inst_platform'}='i386-linux';
    $ret = $warn_nobin_x86_64_linux;
  } else {
    if ($opt_custom_bin) {
      $ret = "$wp Using custom binaries from $opt_custom_bin.\n";
    } else {
      $ret = $warn_nobin;
    }
  }
  foreach my $key (keys %vars) {
    if ($key=~/^binary.*/) {
       ++$vars{'n_systems_selected'} if $vars{$key}==1;
    }
  }
  return($ret);
}

sub create_profile {
  my $profilepath = shift;
  # The file "TLprofile" is created at the beginning of the
  # installation process and contains information about the current
  # setup.  The purpose is to allow non-interactive installations.
  my $fh;
  if (ref($profilepath)) {
    $fh = $profilepath;
  } else {
    open PROFILE, ">$profilepath";
    $fh = \*PROFILE;
  }
  my $tim = gmtime(time);
  print $fh "# texlive.profile written on $tim UTC\n";
  print $fh "# It will NOT be updated and reflects only the\n";
  print $fh "# installation profile at installation time.\n";
  print $fh "selected_scheme $vars{selected_scheme}\n";
  foreach my $key (sort keys %vars) {
    print $fh "$key $vars{$key}\n"
        if $key=~/^collection/ and $vars{$key}==1;
    print $fh "$key $vars{$key}\n" if $key =~ /^option_/;
    print $fh "$key $vars{$key}\n" if (($key =~ /^binary_/) && $vars{$key});
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXDIR/;
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXMFSYSVAR/;
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXMFSYSCONFIG/;
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXMFVAR/;
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXMFCONFIG/;
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXMFLOCAL/;
    print $fh "$key $vars{$key}\n" if $key =~ /^TEXMFHOME/;
    print $fh "$key $vars{$key}\n" if $key =~ /^in_place/;
    print $fh "$key $vars{$key}\n" if $key =~ /^portable/;
  }
  if (!ref($profilepath)) {
    close PROFILE;
  }
}

sub read_profile {
  my $profilepath = shift;
  open PROFILE, "<$profilepath"
    or die "$0: Cannot open profile $profilepath for reading.\n";
  my %pro;
  while (<PROFILE>) {
    chomp;
    next if m/^[[:space:]]*$/; # skip empty lines
    next if m/^[[:space:]]*#/; # skip comment lines
    my ($k,$v) = split (" ", $_, 2); # value might have spaces
    $pro{$k} = $v;
  }
  foreach (keys %vars) {
    # clear out collections from var
    if (m/^collection-/) { $vars{$_} = 0; }
    if (defined($pro{$_})) { $vars{$_} = $pro{$_}; }
  }
  # if a profile contains *only* the selected_scheme setting without
  # any collection, we assume that exactely that scheme should be installed
  my $coldefined = 0;
  foreach my $k (keys %pro) {
    if ($k =~ m/^collection-/) {
      $coldefined = 1;
      last;
    }
  }
  # if at least one collection has been defined return here
  return if $coldefined;
  # since no collections have been defined in the profile, we
  # set those to be installed on which the scheme depends
  my $scheme=$tlpdb->get_package($vars{'selected_scheme'});
  if (!defined($scheme)) {
    dump_vars(\*STDOUT);
    die ("Scheme $vars{selected_scheme} not defined.\n");
  }
  for my $scheme_content ($scheme->depends) {
    $vars{"$scheme_content"}=1 if ($scheme_content=~/^collection-/);
  }
}

# helper subroutine to do sanity check of options before installation
sub sanitise_options {
  # portable option overrides any system integration options
  $vars{'option_path'}                &&= !$vars{'portable'};
  $vars{'option_file_assocs'}         &&= !$vars{'portable'};
  $vars{'option_desktop_integration'} &&= !$vars{'portable'};
}

sub do_install_packages {
  my @what;
  foreach my $package (sort keys %install) {
    push @what, $package if ($install{$package} == 1);
  }
  if (!install_packages($tlpdb,$media,$localtlpdb,\@what,
                        $vars{'option_src'},$vars{'option_doc'})) {
    my $profile_name = "installation.profile";
    create_profile($profile_name);
    tlwarn("Installation failed.\n");
    tlwarn("Rerunning the installer will try to restart the installation.\n");
    tlwarn("Or you can restart by running the installer with:\n");
    if (win32()) {
      tlwarn("  install-tl.bat --profile $profile_name [EXTRA-ARGS]\n");
    } else {
      tlwarn("  install-tl --profile $profile_name [EXTRA-ARGS]\n");
    }
    flushlog();
    exit(1);
  }
}

# for later complete removal we want to save some options and values
# into the local tlpdb:
# - should links be set, and if yes, the destination (bin,man,info)
sub save_options_into_tlpdb {
  $localtlpdb->option ("location", $location);
  $localtlpdb->option ("autobackup", $vars{'option_autobackup'});
  $localtlpdb->option ("backupdir", $vars{'option_backupdir'});
  $localtlpdb->option ("create_formats", $vars{'option_fmt'} ? "1" : "0");
  $localtlpdb->option ("desktop_integration", $vars{'option_desktop_integration'} ? "1" : "0");
  $localtlpdb->option ("file_assocs", $vars{'option_file_assocs'});
  $localtlpdb->option ("post_code", $vars{'option_post_code'} ? "1" : "0");
  $localtlpdb->option ("sys_bin", $vars{'option_sys_bin'});
  $localtlpdb->option ("sys_info", $vars{'option_sys_info'});
  $localtlpdb->option ("sys_man", $vars{'option_sys_man'});
  $localtlpdb->option ("install_docfiles", $vars{'option_doc'} ? "1" : "0");
  $localtlpdb->option ("install_srcfiles", $vars{'option_src'} ? "1" : "0");
  $localtlpdb->option ("w32_multi_user", $vars{'option_w32_multi_user'} ? "1" : "0");
  my @archs;
  foreach (keys %vars) {
    if (m/^binary_(.*)$/ ) {
      if ($vars{$_}) { push @archs, $1; }
    }
  }
  if ($opt_custom_bin) {
    push @archs, "custom";
  }

  # only if we forced the platform we do save this option into the tlpdb
  if (defined($opt_force_arch)) {
    $localtlpdb->setting ("platform", $::_platform_);
  }
  $localtlpdb->setting("available_architectures", @archs);
  $localtlpdb->save() unless $vars{'in_place'};
}

sub import_settings_from_old_tlpdb {
  my $dn = shift;
  my $tlpdboldpath = "$dn/$TeXLive::TLConfig::InfraLocation/$TeXLive::TLConfig::DatabaseName";
  my $previoustlpdb;
  if (-r $tlpdboldpath) {
    # we found an old installation, so read that one in and save
    # the list installed collections into an array.
    info ("Trying to load old TeX Live Database,\n");
    $previoustlpdb = TeXLive::TLPDB->new(root => $dn);
    if ($previoustlpdb) {
      info ("Importing settings from old installation in $dn\n");
    } else {
      tlwarn ("Cannot load old TLPDB, continuing with normal installation.\n");
      return;
    }
  } else {
    return;
  }
  # first import the collections
  # since the scheme is not the final word we select scheme-custom here
  # and then set the single collections by hand
  $vars{'selected_scheme'} = "scheme-custom";
  $vars{'n_collections_selected'} = 0;
  # remove the selection of all collections
  foreach my $entry (keys %vars) {
    if ($entry=~/^(collection-.*)/) {
      $vars{"$1"}=0;
    }
  }
  for my $c ($previoustlpdb->collections) {
    my $tlpobj = $tlpdb->get_package($c);
    if ($tlpobj) {
      $vars{$c} = 1;
      ++$vars{'n_collections_selected'};
    }
  }
  # now take over the path
  my $oldroot = $previoustlpdb->root;
  my $newroot = abs_path("$oldroot/..") . "/$texlive_release";
  $vars{'TEXDIR'} = $newroot;
  $vars{'TEXMFSYSVAR'} = "$newroot/texmf-var";
  $vars{'TEXMFSYSCONFIG'} = "$newroot/texmf-config";
  # only TEXMFLOCAL is treated differently, we use what is found by kpsewhich
  # in 2008 and onward this is defined as
  # TEXMFLOCAL = $SELFAUTOPARENT/../texmf-local
  # so kpsewhich -var-value=TEXMFLOCAL returns
  # ..../2008/../texmf-local
  # TODO TODO TODO
  chomp (my $tml = `kpsewhich -var-value=TEXMFLOCAL`);
  $tml = abs_path($tml);
  $vars{'TEXMFLOCAL'} = $tml;
  #
  # now for the settings
  # set the defaults to what is specified in the tlpdb
  $vars{'option_doc'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "install_docfiles");
  $vars{'option_src'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "install_srcfiles");
  $vars{'option_fmt'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "create_formats");
  $vars{'option_desktop_integration'} = 1 if win32();
  $vars{'option_path'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "path");
  $vars{'option_path'} = 0 if !defined($vars{'option_path'});
  $vars{'option_path'} = 1 if win32();
  $vars{'option_sys_bin'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "sys_bin");
  $vars{'option_sys_man'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "sys_man");
  $vars{'sys_info'} =
    $previoustlpdb->option_pkg("00texlive.installation",
                               "sys_info");
  #
  # import the set of selected architectures
  my @aar = $previoustlpdb->setting_pkg("00texlive.installation",
                                        "available_architectures");
  if (@aar) {
    for my $b ($tlpdb->available_architectures) {
      $vars{"binary_$b"} = member( $b, @aar );
    }
    $vars{'n_systems_available'} = 0;
    for my $key (keys %vars) {
      ++$vars{'n_systems_available'} if ($key=~/^binary/);
    }
  }
  #
  # try to import paper settings
  my $xdvi_paper;
  if (!win32()) {
    $xdvi_paper = TeXLive::TLPaper::get_paper("xdvi");
  }
  my $pdftex_paper = TeXLive::TLPaper::get_paper("pdftex");
  my $dvips_paper = TeXLive::TLPaper::get_paper("dvips");
  my $dvipdfm_paper = TeXLive::TLPaper::get_paper("dvipdfm");
  my $dvipdfmx_paper = TeXLive::TLPaper::get_paper("dvipdfmx");
  my $context_paper;
  if (defined($previoustlpdb->get_package("context"))) {
    $context_paper = TeXLive::TLPaper::get_paper("context");
  }
  my $common_paper = "";
  if (defined($xdvi_paper)) {
    $common_paper = $xdvi_paper;
  }
  $common_paper = 
    ($common_paper ne $context_paper ? "no-agree-on-paper" : $common_paper)
      if (defined($context_paper));
  $common_paper = 
    ($common_paper ne $pdftex_paper ? "no-agree-on-paper" : $common_paper)
      if (defined($pdftex_paper));
  $common_paper = 
    ($common_paper ne $dvips_paper ? "no-agree-on-paper" : $common_paper)
      if (defined($dvips_paper));
  $common_paper = 
    ($common_paper ne $dvipdfm_paper ? "no-agree-on-paper" : $common_paper)
      if (defined($dvipdfm_paper));
  $common_paper = 
    ($common_paper ne $dvipdfmx_paper ? "no-agree-on-paper" : $common_paper)
      if (defined($dvipdfmx_paper));
  if ($common_paper eq "no-agree-on-paper") {
    tlwarn("Previous installation uses different paper settings.\n");
    tlwarn("You will need to select your preferred paper sizes manually.\n\n");
  } else {
    if ($common_paper eq "letter") {
      $vars{'option_letter'} = 1;
    } elsif ($common_paper eq "a4") {
      # do nothing
    } else {
      tlwarn("Previous installation has common paper setting of: $common_paper\n");
      tlwarn("After installation has finished, you will need\n");
      tlwarn("  to redo this setting by running:\n");
    }
  }
}

# do everything to select a scheme
#
sub select_scheme {
  my $s = shift;
  # set the selected scheme to $s
  $vars{'selected_scheme'} = $s;
  # if we are working on scheme-custom simply return
  return if ($s eq "scheme-custom");
  # remove the selection of all collections
  foreach my $entry (keys %vars) {
    if ($entry=~/^(collection-.*)/) {
      $vars{"$1"}=0;
    }
  }
  # select the collections belonging to the scheme
  my $scheme_tlpobj = $tlpdb->get_package($s);
  if (defined ($scheme_tlpobj)) {
    $vars{'n_collections_selected'}=0;
    foreach my $dependent ($scheme_tlpobj->depends) {
      if ($dependent=~/^(collection-.*)/) {
        $vars{"$1"}=1;
        ++$vars{'n_collections_selected'};
      }
    }
  }
  # we have first set all collection-* keys to zero and than
  # set to 1 only those which are required by the scheme
  # since now scheme asks for collection-wintools we set its vars value
  # to 1 in case we are installing win32 binaries
  if ($vars{"binary_win32"}) {
    $vars{"collection-wintools"} = 1;
    ++$vars{'n_collections_selected'};
  }
  # for good measure, update the deps
  calc_depends();
}

sub update_numbers {
  $vars{'n_collections_available'}=0;
  $vars{'n_collections_selected'} = 0;
  $vars{'n_systems_available'} = 0;
  $vars{'n_systems_selected'} = 0;
  foreach my $key (keys %vars) {
    if ($key =~ /^binary/) {
      ++$vars{'n_systems_available'};
      ++$vars{'n_systems_selected'} if $vars{$key} == 1;
    }
    if ($key =~ /^collection-/) {
      ++$vars{'n_collections_available'};
      ++$vars{'n_collections_selected'} if $vars{$key} == 1;
    }
  }
}

sub flushlog {
  my $fh;
  if (open(LOG,">install-tl.log")) {
    printf "Writing log file to current working directory.\n";
    $fh = \*LOG;
  } else {
    $fh = \*STDERR;
    printf "Not creating a log file but flushing messages to stderr.\n";
  }

  foreach my $l (@::LOGLINES) {
    print $fh $l;
  }
}

sub check_on_lang_collection_installed {
  # we check that at least one lang collection is installed:
  foreach my $c (@collections_lang) {
    return 1 if $vars{"$c"};
  }
  if ($vars{"selected_scheme"} eq "scheme-context") {
    # context
    return 1;
  }
  return 0;
}

sub do_cleanup {
  # now open the log file and write out the log lines
  # try to open a log file
  # the user could have given the -logfile option in which case all the
  # stuff is already dumped to it and $::LOGFILE defined. So do not
  # redefine it
  if (!defined($::LOGFILE)) {
    if (open(LOGF,">$vars{'TEXDIR'}/install-tl.log")) {
      $::LOGFILE = \*LOGF;
      foreach my $line(@::LOGLINES) {
        print $::LOGFILE "$line";
      }
    } else {
      tlwarn("$0: Cannot create log file $vars{'TEXDIR'}/install-tl.log: $!\n"
             . "Not writing out log lines.\n");
    }
  }

  # remove temporary files from TEXDIR/temp
  if (($media eq "local_compressed") or ($media eq "NET")) {
    debug("Remove temporary downloaded containers...\n");
    rmtree("$vars{'TEXDIR'}/temp") if (-d "$vars{'TEXDIR'}/temp");
  }

  # write the profile out
  if ($vars{'in_place'}) {
    create_profile("$vars{'TEXDIR'}/texlive.profile");
    debug("Profile written to $vars{'TEXDIR'}/texlive.profile\n");
  } else {
    create_profile("$vars{'TEXDIR'}/$InfraLocation/texlive.profile");
    debug("Profile written to $vars{'TEXDIR'}/$InfraLocation/texlive.profile\n");
  }
  # Close log file if present
  close($::LOGFILE) if (defined($::LOGFILE));
    if (defined($::LOGFILENAME) and (-e $::LOGFILENAME)) {
      print "Logfile: $::LOGFILENAME\n";
    } elsif (-e "$vars{'TEXDIR'}/install-tl.log") {
      print "Logfile: $vars{'TEXDIR'}/install-tl.log\n";
    } else {
      print "No logfile\n";
  }
}


# Return the basic welcome message.

sub welcome {
  my $welcome = <<"EOF";

 See
   $::vars{'TEXDIR'}/index.html
 for links to documentation.  The TeX Live web site
 contains updates and corrections: http://tug.org/texlive.

 TeX Live is a joint project of the TeX user groups around the world;
 please consider supporting it by joining the group best for you. The
 list of groups is available on the web at http://tug.org/usergroups.html.

 Welcome to TeX Live!
EOF
  return $welcome;
}


# The same welcome message as above but with hints about C<PATH>,
# C<MANPATH>, and C<INFOPATH>.

sub welcome_paths {
  my $welcome = welcome ();

  # ugly, remove welcome msg; better than repeating the whole text, though.
  $welcome =~ s/\n Welcome to TeX Live!\n//;

  $welcome .= <<"EOF";

 Add $::vars{'TEXDIR'}/texmf/doc/man to MANPATH, if not dynamically determined.
 Add $::vars{'TEXDIR'}/texmf/doc/info to INFOPATH.
EOF

  $welcome .= <<"EOF";

 Most importantly, add $::vars{'TEXDIR'}/bin/$::vars{'this_platform'}
 to your PATH for current and future sessions.
EOF

  unless ($ENV{"TEXLIVE_INSTALL_ENV_NOCHECK"}) {
    # check for tex-related envvars.
    my $texenvs = "";
    for my $evar (sort keys %origenv) {
      next if $evar =~ /^(_
                          |.*PWD
                          |GENDOCS_TEMPLATE_DIR|PATH|SHELLOPTS
                         )$/x; # don't worry about these
      if ("$evar $origenv{$evar}" =~ /tex/i) { # check both key and value
        $texenvs .= "    $evar=$origenv{$evar}\n";
      }
    }
    if ($texenvs) {
      $welcome .= <<"EOF";

 ----------------------------------------------------------------------
 The following environment variables contain the string "tex"
 (case-independent).  If you're doing anything but adding personal
 directories to the system paths, they may well cause trouble with
 some parts of running TeX.  If you encounter problems, try unsetting
 them.  Please ignore any spurious matches that are unrelated to TeX.

$texenvs ----------------------------------------------------------------------
EOF
    }
  }

  $welcome .= <<"EOF";

 Welcome to TeX Live!
EOF

  return $welcome;
}


#
# remember the warnings issued
sub install_warnlines_hook {
  push @::warn_hook, sub { push @::WARNLINES, @_; };
}

#
# a summary of warnings if there were any
sub warnings_summary {
  return '' unless @::WARNLINES;
  my $summary = <<EOF;

 There were some warnings during the installation process.
 Here is a summary of warning messages:
EOF
  $summary .= '   ' . join('   ', @::WARNLINES) . "\n";
  return $summary;
}


#
# some helper fucntion
sub select_collections {
  my $varref = shift;
  foreach (@_) {
    $varref->{$_} = 1;
  }
}

sub deselect_collections {
  my $varref = shift;
  foreach (@_) {
    $varref->{$_} = 0;
  }
}


__END__

=head1 NAME

install-tl - TeX Live cross-platform installer

=head1 SYNOPSIS

install-tl [I<option>]...

install-tl.bat [I<option>]...

=head1 DESCRIPTION

This installer creates a runnable TeX Live installation from various
media, including over the network.  The installer works across all
platforms supported by TeX Live.  For information on initially
downloading the TeX Live, see L<http://tug.org/texlive/acquire.html>.

The basic idea of TeX Live installation is to choose one of the
top-level I<schemes>, each of which is defined as a different set of
I<collections> and I<packages>, where a collection is a set of packages,
and a package is what contains actual files.

Within the installer, you can choose a scheme, and further customize the
set of collections to install, but not the set of the packages.  To do
that, use C<tlmgr> (reference below) after the initial installation is
completely.

The default is C<scheme-full>, to install everything, and this is highly
recommended.

=head1 REFERENCES

Post-installation configuration, package updates, and much more, are
handled through B<tlmgr>(1), the TeX Live Manager
(L<http://tug.org/texlive/tlmgr.html>).

The most up-to-date version of this documentation is on the Internet at
L<http://tug.org/texlive/doc/install-tl.html>.

For the full documentation of TeX Live, see
L<http://tug.org/texlive/doc>.

=head1 OPTIONS

=over 4

=item B<-gui> [[=]I<module>]

If no I<module> is given starts the C<perltk> (see below) GUI installer.

If I<module> is given loads the given installer module. Currently the
following modules are supported:

=over 8

=item C<text>

The text mode user interface which is the default on Unix systems, and
can be forced with by giving C<text> as I<module>, or with the C<-no-gui>
switch.

=item C<wizard>

The wizard mode user interface asking only a few questions before installing
all of TeX Live. This is the default on Windows systems.

=item C<perltk>

The expert GUI installer providing access to more options.  It can also
be selected by giving the C<-gui> option without any I<module>, or, on
Windows by running C<install-tl-advanced.bat>.

=back

The C<perltk> and C<wizard> modules, and thus also when calling with a
simple C<-gui> (without I<module>) requires
the Perl/Tk module (L<http://tug.org/texlive/distro.html#perltk>); if
Perl/Tk is not available, installation continues in text mode.


=item B<-no-gui>

Use the text mode installer (default except on Windows).

=item B<-lang> I<llcode>

(only for GUI installer) If possible, start the installer translated into
the language specified by the 2-letter (ISO 639-1) language code (with
the exception for selecting simplified or traditional Chinese).
Currently supported
languages: English (en, default), Czech (cs), German (de), French (fr),
Italian (it), Dutch (nl), Polish (pl), Russian (ru), Slovak (sk),
Slovenian (sl), Serbian (sr), Vietnamese (vi), simplified Chinese
(zh-cn), and traditional Chinese (zh-tw).

=item B<-repository> I<url|path>

Specify the package repository to be used as the source of the
installation, either a local directory via C</path/to/directory> or a
C<file:/> url, or a network location via a C<http://> or C<ftp://> url.
(No other protocols are supported.)

The default is to pick a mirror automatically, using
L<http://mirror.ctan.org/systems/texlive/tlnet>; the chosen mirror is
used for the entire download.  You can use the special argument C<ctan>
as an abbreviation for this.  See L<http://ctan.org> for more about CTAN
and its mirrors.

If the repository is on the network, trailing C</> characters and/or
trailing C</tlpkg> and C</archive> components are ignored.  For example,
you could choose a particular CTAN mirror with something like this:

  -repository http://ctan.example.org/its/ctan/dir/systems/texlive/tlnet

Of course a real hostname and its particular top-level CTAN path
have to be specified.  The list of CTAN mirrors is available at
L<http://ctan.org/mirrors>.

If the repository is local, the installation type (compressed or live) is
automatically determined, by checking for the presence of a
C<archive> directory relative to the root.  Compressed is
preferred if both are available, since it is faster.  Here's an example
of using a local directory:

  -repository /local/TL/repository

After installation is complete, you can use that installation as the
repository for another installation.  If you chose to install less than
the full scheme containing all packages, the list of available schemes
will be adjusted accordingly.

For backward compatibility and convenience, C<--location> and C<--repo>
are accepted as aliases for this option.

=item B<-all-options>

Normally options not regarding the current platform are not shown.
Giving this cmd line option allows to configure settings in the
final tlpdb that do not have any immediate effect.

=item B<-custom-bin> I<path>

If you have built your own binaries for your system (probably because
your platform was not supported by TeX Live out of the box), this option
allows you to give the I<path> to a directory where the binaries for the
current system are present. The installation will continue as usual, but
at the end all files from I<path> are copied over to C<bin/custom> in
your installation folder and this directory will be added to the path
for the post-install actions.

=item B<-debug-translation>

In GUI mode, this switch makes C<tlmgr> report any missing, or more
likely untranslated, messages to standard error.  Helpful for
translators to see what remains to be done.

=item B<--help>, B<-help>, B<-?>

Display this help and exit.

=item B<-logfile> I<file>

Write both all messages (informational, debugging, warnings) to I<file>,
in addition to standard output or standard error.

If this option is not given, the installer will create a log file
in the root of the writable installation tree,
for example, C</usr/local/texlive/YYYY/install-tl.log> for the I<YYYY>
release.

=item B<-force-platform> I<platform>

Instead of auto-detecting the current platform, use I<platform>.
Binaries for this platform must be present and they must actually be
runnable, or installation will fail.  C<-force-arch> is a synonym.

=item B<-no-cls>

(only for text mode installer) do not clear the screen when entering
a new menu (for debugging purposes).

=item B<-non-admin>

For Windows only: configure for the current user, not for all users.

=item B<--persistent-downloads>

=item B<--no-persistent-downloads>

For net installs, activating this option makes the installer try to set up a
persistent connection using the Net::LWP Perl module.
This opens only one connection between your computer and the server
per session and reuses it, instead of initiating a new download for
each package.

This option is turned on by default, and the installation program will
fall back to using C<wget> if this is not possible.  To disable usage of
LWP and persistent connections, use C<--no-persistent-downloads>.

=item B<-portable>

Install for portable use on e.g. a USB stick. Also selectable from
within the perltk- and text installers.

=item B<-in-place>

This is a quick-and-dirty installation option in case you already
have an rsync- or svn checkout of TeX Live. It will use the checkout
as-is and will just do the necessary post-install. Be warned that
the file tlpkg/texlive.tlpdb may be rewritten, that removal has
to be done manually, and that the only realistic way to maintain
this installation is to redo it from time to time. This option is
not available via the installer interface. USE AT YOUR OWN RISK.

=item B<-print-platform>

Print the TeX Live identifier for the detected platform
(hardware/operating system) combination to standard output, and exit.
C<-print-arch> is a synonym.

=item B<-profile> I<profile>

Load the file I<profile> for repeated installations on different
systems.  This is useful for batch or scripted installation of TeX Live,
that is, no user interaction is required.

A I<profile> file contains all the values needed to perform an
installation.  After a normal installation has finished, a profile for
that exact installation is written to the file
DEST/tlpkg/texlive.profile.  That file can be given as the argument to
C<-profile> to redo the exact same installation on a different system,
of rexample.  Alternatively, you can create a custom profile by starting
from a generated one and changing values.

Normally a profile has to specify the value C<1> for each collection to
be installed, even if the scheme is specified.  This follows from the
logic of the installer in that you can first select a scheme and then
change the collections being installed.  But there is one exception to
this, for convenience: If the profile contains a variable for
C<selected_scheme> and I<no> collection variables are defined in the
profile at all, then the collections which the specified scheme requires
are installed.

Thus, a line C<selected_scheme scheme-medium> together with the
definitions of the installation directories (C<TEXDIR>, C<TEXMFHOME>,
C<TEXMFLOCAL>, C<TEXMFSYSCONFIG>, C<TEXMFSYSVAR>) suffices to install
the medium scheme with all default options.

=item B<-q>

Omit normal informational messages.

=item B<-scheme> I<scheme>

Schemes are the highest level of package grouping in TeX Live; the
default is to use the C<full> scheme, which includes everything.  This
option overrides that default.  You can change the scheme again before
the actual installation with the usual menu.  The I<scheme> argument may
optionally have a prefix C<scheme->.  The list of supported scheme names
depends on what your package repository provides; see the interactive
menu list.

=item B<-v>

Include debugging messages; repeat for maximum debugging, as in C<-v
-v>.  (Further repeats are accepted but ignored.)

=item B<--version>, B<-version>

Output version information and exit.
If C<-v> has been given the revisions of the used modules are reported, too.

=back

As usual, all options can be specified with either C<-> or C<-->, and
arguments can be separated from their options by either a space or C<=>.


=head1 ENVIRONMENT VARIABLES

For ease in scripting and debugging, C<install-tl> will look for the
following environment variables.  They are not of interest in normal
user installations.

=over 4

=item C<TEXLIVE_INSTALL_ENV_NOCHECK>

Omit the check for environment variables containing the string C<tex>.
People developing TeX-related software are likely to have many such
variables.

=item C<TEXLIVE_INSTALL_NO_CONTEXT_CACHE>

Omit creating the ConTeXt cache.  This is useful for redistributors.

=item C<TEXLIVE_INSTALL_PREFIX>

=item C<TEXLIVE_INSTALL_TEXMFCONFIG>

=item C<TEXLIVE_INSTALL_TEXMFHOME>

=item C<TEXLIVE_INSTALL_TEXMFLOCAL>

=item C<TEXLIVE_INSTALL_TEXMFSYSCONFIG>

=item C<TEXLIVE_INSTALL_TEXMFSYSVAR>

=item C<TEXLIVE_INSTALL_TEXMFVAR>

Specify the respective directories.

=back


=head1 AUTHORS AND COPYRIGHT

This script and its documentation were written for the TeX Live
distribution (L<http://tug.org/texlive>) and both are licensed under the
GNU General Public License Version 2 or later.

=cut

### Local Variables:
### perl-indent-level: 2
### tab-width: 2
### indent-tabs-mode: nil
### End:
# vim:set tabstop=2 expandtab: #