distribute / setuptools / command / easy_install.py

The branch 'default' does not exist.
   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
#!python
"""\
Easy Install
------------

A tool for doing automatic download/extract/build of distutils-based Python
packages.  For detailed documentation, see the accompanying EasyInstall.txt
file, or visit the `EasyInstall home page`__.

__ http://packages.python.org/distribute/easy_install.html

"""
import sys
import os
import zipimport
import shutil
import tempfile
import zipfile
import re
import stat
import random
import platform
from glob import glob
import pkg_resources
from setuptools import Command, _dont_write_bytecode
from setuptools.sandbox import run_setup
from distutils import log, dir_util
from distutils.util import get_platform
from distutils.util import convert_path, subst_vars
from distutils.sysconfig import get_python_lib, get_config_vars
from distutils.errors import DistutilsArgError, DistutilsOptionError, \
    DistutilsError, DistutilsPlatformError
from distutils.command.install import INSTALL_SCHEMES, SCHEME_KEYS
from setuptools.command import setopt
from setuptools.archive_util import unpack_archive
from setuptools.package_index import PackageIndex
from setuptools.package_index import URL_SCHEME
from setuptools.command import bdist_egg, egg_info
from pkg_resources import yield_lines, normalize_path, resource_string, \
        ensure_directory, get_distribution, find_distributions, \
        Environment, Requirement, Distribution, \
        PathMetadata, EggMetadata, WorkingSet, \
         DistributionNotFound, VersionConflict, \
        DEVELOP_DIST

sys_executable = os.path.normpath(sys.executable)

__all__ = [
    'samefile', 'easy_install', 'PthDistributions', 'extract_wininst_cfg',
    'main', 'get_exe_prefixes',
]

import site
HAS_USER_SITE = not sys.version < "2.6" and site.ENABLE_USER_SITE

import struct
def is_64bit():
    return struct.calcsize("P") == 8

def samefile(p1,p2):
    if hasattr(os.path,'samefile') and (
        os.path.exists(p1) and os.path.exists(p2)
    ):
        return os.path.samefile(p1,p2)
    return (
        os.path.normpath(os.path.normcase(p1)) ==
        os.path.normpath(os.path.normcase(p2))
    )

if sys.version_info <= (3,):
    def _to_ascii(s):
        return s
    def isascii(s):
        try:
            unicode(s, 'ascii')
            return True
        except UnicodeError:
            return False
else:
    def _to_ascii(s):
        return s.encode('ascii')
    def isascii(s):
        try:
            s.encode('ascii')
            return True
        except UnicodeError:
            return False

class easy_install(Command):
    """Manage a download/build/install process"""
    description = "Find/get/install Python packages"
    command_consumes_arguments = True

    user_options = [
        ('prefix=', None, "installation prefix"),
        ("zip-ok", "z", "install package as a zipfile"),
        ("multi-version", "m", "make apps have to require() a version"),
        ("upgrade", "U", "force upgrade (searches PyPI for latest versions)"),
        ("install-dir=", "d", "install package to DIR"),
        ("script-dir=", "s", "install scripts to DIR"),
        ("exclude-scripts", "x", "Don't install scripts"),
        ("always-copy", "a", "Copy all needed packages to install dir"),
        ("index-url=", "i", "base URL of Python Package Index"),
        ("find-links=", "f", "additional URL(s) to search for packages"),
        ("delete-conflicting", "D", "no longer needed; don't use this"),
        ("ignore-conflicts-at-my-risk", None,
            "no longer needed; don't use this"),
        ("build-directory=", "b",
            "download/extract/build in DIR; keep the results"),
        ('optimize=', 'O',
         "also compile with optimization: -O1 for \"python -O\", "
         "-O2 for \"python -OO\", and -O0 to disable [default: -O0]"),
        ('record=', None,
         "filename in which to record list of installed files"),
        ('always-unzip', 'Z', "don't install as a zipfile, no matter what"),
        ('site-dirs=','S',"list of directories where .pth files work"),
        ('editable', 'e', "Install specified packages in editable form"),
        ('no-deps', 'N', "don't install dependencies"),
        ('allow-hosts=', 'H', "pattern(s) that hostnames must match"),
        ('local-snapshots-ok', 'l', "allow building eggs from local checkouts"),
        ('version', None, "print version information and exit"),
        ('no-find-links', None,
         "Don't load find-links defined in packages being installed")
    ]
    boolean_options = [
        'zip-ok', 'multi-version', 'exclude-scripts', 'upgrade', 'always-copy',
        'delete-conflicting', 'ignore-conflicts-at-my-risk', 'editable',
        'no-deps', 'local-snapshots-ok', 'version'
    ]

    if HAS_USER_SITE:
        user_options.append(('user', None,
                             "install in user site-package '%s'" % site.USER_SITE))
        boolean_options.append('user')


    negative_opt = {'always-unzip': 'zip-ok'}
    create_index = PackageIndex

    def initialize_options(self):
        if HAS_USER_SITE:
            whereami = os.path.abspath(__file__)
            self.user = whereami.startswith(site.USER_SITE)
        else:
            self.user = 0

        self.zip_ok = self.local_snapshots_ok = None
        self.install_dir = self.script_dir = self.exclude_scripts = None
        self.index_url = None
        self.find_links = None
        self.build_directory = None
        self.args = None
        self.optimize = self.record = None
        self.upgrade = self.always_copy = self.multi_version = None
        self.editable = self.no_deps = self.allow_hosts = None
        self.root = self.prefix = self.no_report = None
        self.version = None
        self.install_purelib = None     # for pure module distributions
        self.install_platlib = None     # non-pure (dists w/ extensions)
        self.install_headers = None     # for C/C++ headers
        self.install_lib = None         # set to either purelib or platlib
        self.install_scripts = None
        self.install_data = None
        self.install_base = None
        self.install_platbase = None
        if HAS_USER_SITE:
            self.install_userbase = site.USER_BASE
            self.install_usersite = site.USER_SITE
        else:
            self.install_userbase = None
            self.install_usersite = None
        self.no_find_links = None

        # Options not specifiable via command line
        self.package_index = None
        self.pth_file = self.always_copy_from = None
        self.delete_conflicting = None
        self.ignore_conflicts_at_my_risk = None
        self.site_dirs = None
        self.installed_projects = {}
        self.sitepy_installed = False
        # Always read easy_install options, even if we are subclassed, or have
        # an independent instance created.  This ensures that defaults will
        # always come from the standard configuration file(s)' "easy_install"
        # section, even if this is a "develop" or "install" command, or some
        # other embedding.
        self._dry_run = None
        self.verbose = self.distribution.verbose
        self.distribution._set_command_options(
            self, self.distribution.get_option_dict('easy_install')
        )

    def delete_blockers(self, blockers):
        for filename in blockers:
            if os.path.exists(filename) or os.path.islink(filename):
                log.info("Deleting %s", filename)
                if not self.dry_run:
                    if os.path.isdir(filename) and not os.path.islink(filename):
                        rmtree(filename)
                    else:
                        os.unlink(filename)

    def finalize_options(self):
        if self.version:
            print 'distribute %s' % get_distribution('distribute').version
            sys.exit()

        py_version = sys.version.split()[0]
        prefix, exec_prefix = get_config_vars('prefix', 'exec_prefix')

        self.config_vars = {'dist_name': self.distribution.get_name(),
                            'dist_version': self.distribution.get_version(),
                            'dist_fullname': self.distribution.get_fullname(),
                            'py_version': py_version,
                            'py_version_short': py_version[0:3],
                            'py_version_nodot': py_version[0] + py_version[2],
                            'sys_prefix': prefix,
                            'prefix': prefix,
                            'sys_exec_prefix': exec_prefix,
                            'exec_prefix': exec_prefix,
                            # Only python 3.2+ has abiflags
                            'abiflags': getattr(sys, 'abiflags', ''),
                           }

        if HAS_USER_SITE:
            self.config_vars['userbase'] = self.install_userbase
            self.config_vars['usersite'] = self.install_usersite

        # fix the install_dir if "--user" was used
        #XXX: duplicate of the code in the setup command
        if self.user and HAS_USER_SITE:
            self.create_home_path()
            if self.install_userbase is None:
                raise DistutilsPlatformError(
                    "User base directory is not specified")
            self.install_base = self.install_platbase = self.install_userbase
            if os.name == 'posix':
                self.select_scheme("unix_user")
            else:
                self.select_scheme(os.name + "_user")

        self.expand_basedirs()
        self.expand_dirs()

        self._expand('install_dir','script_dir','build_directory','site_dirs')
        # If a non-default installation directory was specified, default the
        # script directory to match it.
        if self.script_dir is None:
            self.script_dir = self.install_dir

        if self.no_find_links is None:
            self.no_find_links = False

        # Let install_dir get set by install_lib command, which in turn
        # gets its info from the install command, and takes into account
        # --prefix and --home and all that other crud.
        self.set_undefined_options('install_lib',
            ('install_dir','install_dir')
        )
        # Likewise, set default script_dir from 'install_scripts.install_dir'
        self.set_undefined_options('install_scripts',
            ('install_dir', 'script_dir')
        )

        if self.user and self.install_purelib:
            self.install_dir = self.install_purelib
            self.script_dir = self.install_scripts
        # default --record from the install command
        self.set_undefined_options('install', ('record', 'record'))
        normpath = map(normalize_path, sys.path)
        self.all_site_dirs = get_site_dirs()
        if self.site_dirs is not None:
            site_dirs = [
                os.path.expanduser(s.strip()) for s in self.site_dirs.split(',')
            ]
            for d in site_dirs:
                if not os.path.isdir(d):
                    log.warn("%s (in --site-dirs) does not exist", d)
                elif normalize_path(d) not in normpath:
                    raise DistutilsOptionError(
                        d+" (in --site-dirs) is not on sys.path"
                    )
                else:
                    self.all_site_dirs.append(normalize_path(d))
        if not self.editable: self.check_site_dir()
        self.index_url = self.index_url or "http://pypi.python.org/simple"
        self.shadow_path = self.all_site_dirs[:]
        for path_item in self.install_dir, normalize_path(self.script_dir):
            if path_item not in self.shadow_path:
                self.shadow_path.insert(0, path_item)

        if self.allow_hosts is not None:
            hosts = [s.strip() for s in self.allow_hosts.split(',')]
        else:
            hosts = ['*']
        if self.package_index is None:
            self.package_index = self.create_index(
                self.index_url, search_path = self.shadow_path, hosts=hosts,
            )
        self.local_index = Environment(self.shadow_path+sys.path)

        if self.find_links is not None:
            if isinstance(self.find_links, basestring):
                self.find_links = self.find_links.split()
        else:
            self.find_links = []
        if self.local_snapshots_ok:
            self.package_index.scan_egg_links(self.shadow_path+sys.path)
        if not self.no_find_links:
            self.package_index.add_find_links(self.find_links)
        self.set_undefined_options('install_lib', ('optimize','optimize'))
        if not isinstance(self.optimize,int):
            try:
                self.optimize = int(self.optimize)
                if not (0 <= self.optimize <= 2): raise ValueError
            except ValueError:
                raise DistutilsOptionError("--optimize must be 0, 1, or 2")

        if self.delete_conflicting and self.ignore_conflicts_at_my_risk:
            raise DistutilsOptionError(
                "Can't use both --delete-conflicting and "
                "--ignore-conflicts-at-my-risk at the same time"
            )
        if self.editable and not self.build_directory:
            raise DistutilsArgError(
                "Must specify a build directory (-b) when using --editable"
            )
        if not self.args:
            raise DistutilsArgError(
                "No urls, filenames, or requirements specified (see --help)")

        self.outputs = []


    def _expand_attrs(self, attrs):
        for attr in attrs:
            val = getattr(self, attr)
            if val is not None:
                if os.name == 'posix' or os.name == 'nt':
                    val = os.path.expanduser(val)
                val = subst_vars(val, self.config_vars)
                setattr(self, attr, val)

    def expand_basedirs(self):
        """Calls `os.path.expanduser` on install_base, install_platbase and
        root."""
        self._expand_attrs(['install_base', 'install_platbase', 'root'])

    def expand_dirs(self):
        """Calls `os.path.expanduser` on install dirs."""
        self._expand_attrs(['install_purelib', 'install_platlib',
                            'install_lib', 'install_headers',
                            'install_scripts', 'install_data',])

    def run(self):
        if self.verbose != self.distribution.verbose:
            log.set_verbosity(self.verbose)
        try:
            for spec in self.args:
                self.easy_install(spec, not self.no_deps)
            if self.record:
                outputs = self.outputs
                if self.root:               # strip any package prefix
                    root_len = len(self.root)
                    for counter in xrange(len(outputs)):
                        outputs[counter] = outputs[counter][root_len:]
                from distutils import file_util
                self.execute(
                    file_util.write_file, (self.record, outputs),
                    "writing list of installed files to '%s'" %
                    self.record
                )
            self.warn_deprecated_options()
        finally:
            log.set_verbosity(self.distribution.verbose)

    def pseudo_tempname(self):
        """Return a pseudo-tempname base in the install directory.
        This code is intentionally naive; if a malicious party can write to
        the target directory you're already in deep doodoo.
        """
        try:
            pid = os.getpid()
        except:
            pid = random.randint(0,sys.maxint)
        return os.path.join(self.install_dir, "test-easy-install-%s" % pid)

    def warn_deprecated_options(self):
        if self.delete_conflicting or self.ignore_conflicts_at_my_risk:
            log.warn(
                "Note: The -D, --delete-conflicting and"
                " --ignore-conflicts-at-my-risk no longer have any purpose"
                " and should not be used."
            )

    def check_site_dir(self):
        """Verify that self.install_dir is .pth-capable dir, if needed"""

        instdir = normalize_path(self.install_dir)
        pth_file = os.path.join(instdir,'easy-install.pth')

        # Is it a configured, PYTHONPATH, implicit, or explicit site dir?
        is_site_dir = instdir in self.all_site_dirs

        if not is_site_dir:
            # No?  Then directly test whether it does .pth file processing
            is_site_dir = self.check_pth_processing()
        else:
            # make sure we can write to target dir
            testfile = self.pseudo_tempname()+'.write-test'
            test_exists = os.path.exists(testfile)
            try:
                if test_exists: os.unlink(testfile)
                open(testfile,'w').close()
                os.unlink(testfile)
            except (OSError,IOError):
                self.cant_write_to_target()

        if not is_site_dir and not self.multi_version:
            # Can't install non-multi to non-site dir
            raise DistutilsError(self.no_default_version_msg())

        if is_site_dir:
            if self.pth_file is None:
                self.pth_file = PthDistributions(pth_file, self.all_site_dirs)
        else:
            self.pth_file = None

        PYTHONPATH = os.environ.get('PYTHONPATH','').split(os.pathsep)
        if instdir not in map(normalize_path, filter(None,PYTHONPATH)):
            # only PYTHONPATH dirs need a site.py, so pretend it's there
            self.sitepy_installed = True
        elif self.multi_version and not os.path.exists(pth_file):
            self.sitepy_installed = True    # don't need site.py in this case
            self.pth_file = None            # and don't create a .pth file
        self.install_dir = instdir

    def cant_write_to_target(self):
        msg = """can't create or remove files in install directory

The following error occurred while trying to add or remove files in the
installation directory:

    %s

The installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:

    %s
"""     % (sys.exc_info()[1], self.install_dir,)

        if not os.path.exists(self.install_dir):
            msg += """
This directory does not currently exist.  Please create it and try again, or
choose a different installation directory (using the -d or --install-dir
option).
"""
        else:
            msg += """
Perhaps your account does not have write access to this directory?  If the
installation directory is a system-owned directory, you may need to sign in
as the administrator or "root" account.  If you do not have administrative
access to this machine, you may wish to choose a different installation
directory, preferably one that is listed in your PYTHONPATH environment
variable.

For information on other options, you may wish to consult the
documentation at:

  http://packages.python.org/distribute/easy_install.html

Please make the appropriate changes for your system and try again.
"""
        raise DistutilsError(msg)




    def check_pth_processing(self):
        """Empirically verify whether .pth files are supported in inst. dir"""
        instdir = self.install_dir
        log.info("Checking .pth file support in %s", instdir)
        pth_file = self.pseudo_tempname()+".pth"
        ok_file = pth_file+'.ok'
        ok_exists = os.path.exists(ok_file)
        try:
            if ok_exists: os.unlink(ok_file)
            dirname = os.path.dirname(ok_file)
            if not os.path.exists(dirname):
                os.makedirs(dirname)
            f = open(pth_file,'w')
        except (OSError,IOError):
            self.cant_write_to_target()
        else:
            try:
                f.write("import os; f = open(%r, 'w'); f.write('OK'); f.close()\n" % (ok_file,))
                f.close(); f=None
                executable = sys.executable
                if os.name=='nt':
                    dirname,basename = os.path.split(executable)
                    alt = os.path.join(dirname,'pythonw.exe')
                    if basename.lower()=='python.exe' and os.path.exists(alt):
                        # use pythonw.exe to avoid opening a console window
                        executable = alt

                from distutils.spawn import spawn
                spawn([executable,'-E','-c','pass'],0)

                if os.path.exists(ok_file):
                    log.info(
                        "TEST PASSED: %s appears to support .pth files",
                        instdir
                    )
                    return True
            finally:
                if f: f.close()
                if os.path.exists(ok_file): os.unlink(ok_file)
                if os.path.exists(pth_file): os.unlink(pth_file)
        if not self.multi_version:
            log.warn("TEST FAILED: %s does NOT support .pth files", instdir)
        return False

    def install_egg_scripts(self, dist):
        """Write all the scripts for `dist`, unless scripts are excluded"""
        if not self.exclude_scripts and dist.metadata_isdir('scripts'):
            for script_name in dist.metadata_listdir('scripts'):
                if dist.metadata_isdir('scripts/' + script_name):
                    # The "script" is a directory, likely a Python 3
                    # __pycache__ directory, so skip it.
                    continue
                self.install_script(
                    dist, script_name,
                    dist.get_metadata('scripts/'+script_name)
                )
        self.install_wrapper_scripts(dist)

    def add_output(self, path):
        if os.path.isdir(path):
            for base, dirs, files in os.walk(path):
                for filename in files:
                    self.outputs.append(os.path.join(base,filename))
        else:
            self.outputs.append(path)

    def not_editable(self, spec):
        if self.editable:
            raise DistutilsArgError(
                "Invalid argument %r: you can't use filenames or URLs "
                "with --editable (except via the --find-links option)."
                % (spec,)
            )

    def check_editable(self,spec):
        if not self.editable:
            return

        if os.path.exists(os.path.join(self.build_directory, spec.key)):
            raise DistutilsArgError(
                "%r already exists in %s; can't do a checkout there" %
                (spec.key, self.build_directory)
            )






    def easy_install(self, spec, deps=False):
        tmpdir = tempfile.mkdtemp(prefix="easy_install-")
        download = None
        if not self.editable: self.install_site_py()

        try:
            if not isinstance(spec,Requirement):
                if URL_SCHEME(spec):
                    # It's a url, download it to tmpdir and process
                    self.not_editable(spec)
                    download = self.package_index.download(spec, tmpdir)
                    return self.install_item(None, download, tmpdir, deps, True)

                elif os.path.exists(spec):
                    # Existing file or directory, just process it directly
                    self.not_editable(spec)
                    return self.install_item(None, spec, tmpdir, deps, True)
                else:
                    spec = parse_requirement_arg(spec)

            self.check_editable(spec)
            dist = self.package_index.fetch_distribution(
                spec, tmpdir, self.upgrade, self.editable, not self.always_copy,
                self.local_index
            )

            if dist is None:
                msg = "Could not find suitable distribution for %r" % spec
                if self.always_copy:
                    msg+=" (--always-copy skips system and development eggs)"
                raise DistutilsError(msg)
            elif dist.precedence==DEVELOP_DIST:
                # .egg-info dists don't need installing, just process deps
                self.process_distribution(spec, dist, deps, "Using")
                return dist
            else:
                return self.install_item(spec, dist.location, tmpdir, deps)

        finally:
            if os.path.exists(tmpdir):
                rmtree(tmpdir)

    def install_item(self, spec, download, tmpdir, deps, install_needed=False):

        # Installation is also needed if file in tmpdir or is not an egg
        install_needed = install_needed or self.always_copy
        install_needed = install_needed or os.path.dirname(download) == tmpdir
        install_needed = install_needed or not download.endswith('.egg')
        install_needed = install_needed or (
            self.always_copy_from is not None and
            os.path.dirname(normalize_path(download)) ==
            normalize_path(self.always_copy_from)
        )

        if spec and not install_needed:
            # at this point, we know it's a local .egg, we just don't know if
            # it's already installed.
            for dist in self.local_index[spec.project_name]:
                if dist.location==download:
                    break
            else:
                install_needed = True   # it's not in the local index

        log.info("Processing %s", os.path.basename(download))

        if install_needed:
            dists = self.install_eggs(spec, download, tmpdir)
            for dist in dists:
                self.process_distribution(spec, dist, deps)
        else:
            dists = [self.check_conflicts(self.egg_distribution(download))]
            self.process_distribution(spec, dists[0], deps, "Using")

        if spec is not None:
            for dist in dists:
                if dist in spec:
                    return dist



    def select_scheme(self, name):
        """Sets the install directories by applying the install schemes."""
        # it's the caller's problem if they supply a bad name!
        scheme = INSTALL_SCHEMES[name]
        for key in SCHEME_KEYS:
            attrname = 'install_' + key
            if getattr(self, attrname) is None:
                setattr(self, attrname, scheme[key])




    def process_distribution(self, requirement, dist, deps=True, *info):
        self.update_pth(dist)
        self.package_index.add(dist)
        self.local_index.add(dist)
        if not self.editable:
            self.install_egg_scripts(dist)
        self.installed_projects[dist.key] = dist
        log.info(self.installation_report(requirement, dist, *info))
        if (dist.has_metadata('dependency_links.txt') and
            not self.no_find_links):
            self.package_index.add_find_links(
                dist.get_metadata_lines('dependency_links.txt')
            )
        if not deps and not self.always_copy:
            return
        elif requirement is not None and dist.key != requirement.key:
            log.warn("Skipping dependencies for %s", dist)
            return  # XXX this is not the distribution we were looking for
        elif requirement is None or dist not in requirement:
            # if we wound up with a different version, resolve what we've got
            distreq = dist.as_requirement()
            requirement = requirement or distreq
            requirement = Requirement(
                distreq.project_name, distreq.specs, requirement.extras
            )
        log.info("Processing dependencies for %s", requirement)
        try:
            distros = WorkingSet([]).resolve(
                [requirement], self.local_index, self.easy_install
            )
        except DistributionNotFound, e:
            raise DistutilsError(
                "Could not find required distribution %s" % e.args
            )
        except VersionConflict, e:
            raise DistutilsError(
                "Installed distribution %s conflicts with requirement %s"
                % e.args
            )
        if self.always_copy or self.always_copy_from:
            # Force all the relevant distros to be copied or activated
            for dist in distros:
                if dist.key not in self.installed_projects:
                    self.easy_install(dist.as_requirement())
        log.info("Finished processing dependencies for %s", requirement)

    def should_unzip(self, dist):
        if self.zip_ok is not None:
            return not self.zip_ok
        if dist.has_metadata('not-zip-safe'):
            return True
        if not dist.has_metadata('zip-safe'):
            return True
        return True

    def maybe_move(self, spec, dist_filename, setup_base):
        dst = os.path.join(self.build_directory, spec.key)
        if os.path.exists(dst):
            log.warn(
               "%r already exists in %s; build directory %s will not be kept",
               spec.key, self.build_directory, setup_base
            )
            return setup_base
        if os.path.isdir(dist_filename):
            setup_base = dist_filename
        else:
            if os.path.dirname(dist_filename)==setup_base:
                os.unlink(dist_filename)   # get it out of the tmp dir
            contents = os.listdir(setup_base)
            if len(contents)==1:
                dist_filename = os.path.join(setup_base,contents[0])
                if os.path.isdir(dist_filename):
                    # if the only thing there is a directory, move it instead
                    setup_base = dist_filename
        ensure_directory(dst); shutil.move(setup_base, dst)
        return dst

    def install_wrapper_scripts(self, dist):
        if not self.exclude_scripts:
            for args in get_script_args(dist):
                self.write_script(*args)



    def install_script(self, dist, script_name, script_text, dev_path=None):
        """Generate a legacy script wrapper and install it"""
        spec = str(dist.as_requirement())
        is_script = is_python_script(script_text, script_name)

        def get_template(filename):
            """
            There are a couple of template scripts in the package. This
            function loads one of them and prepares it for use.

            These templates use triple-quotes to escape variable
            substitutions so the scripts get the 2to3 treatment when build
            on Python 3. The templates cannot use triple-quotes naturally.
            """
            raw_bytes = resource_string('setuptools', template_name)
            template_str = raw_bytes.decode('utf-8')
            clean_template = template_str.replace('"""', '')
            return clean_template

        if is_script:
            template_name = 'script template.py'
            if dev_path:
                template_name = template_name.replace('.py', ' (dev).py')
            script_text = (get_script_header(script_text) +
                get_template(template_name) % locals())
        self.write_script(script_name, _to_ascii(script_text), 'b')

    def write_script(self, script_name, contents, mode="t", blockers=()):
        """Write an executable file to the scripts directory"""
        self.delete_blockers(   # clean up old .py/.pyw w/o a script
            [os.path.join(self.script_dir,x) for x in blockers])
        log.info("Installing %s script to %s", script_name, self.script_dir)
        target = os.path.join(self.script_dir, script_name)
        self.add_output(target)

        mask = current_umask()
        if not self.dry_run:
            ensure_directory(target)
            f = open(target,"w"+mode)
            f.write(contents)
            f.close()
            chmod(target, 0777-mask)




    def install_eggs(self, spec, dist_filename, tmpdir):
        # .egg dirs or files are already built, so just return them
        if dist_filename.lower().endswith('.egg'):
            return [self.install_egg(dist_filename, tmpdir)]
        elif dist_filename.lower().endswith('.exe'):
            return [self.install_exe(dist_filename, tmpdir)]

        # Anything else, try to extract and build
        setup_base = tmpdir
        if os.path.isfile(dist_filename) and not dist_filename.endswith('.py'):
            unpack_archive(dist_filename, tmpdir, self.unpack_progress)
        elif os.path.isdir(dist_filename):
            setup_base = os.path.abspath(dist_filename)

        if (setup_base.startswith(tmpdir)   # something we downloaded
            and self.build_directory and spec is not None
        ):
            setup_base = self.maybe_move(spec, dist_filename, setup_base)

        # Find the setup.py file
        setup_script = os.path.join(setup_base, 'setup.py')

        if not os.path.exists(setup_script):
            setups = glob(os.path.join(setup_base, '*', 'setup.py'))
            if not setups:
                raise DistutilsError(
                    "Couldn't find a setup script in %s" % os.path.abspath(dist_filename)
                )
            if len(setups)>1:
                raise DistutilsError(
                    "Multiple setup scripts in %s" % os.path.abspath(dist_filename)
                )
            setup_script = setups[0]

        # Now run it, and return the result
        if self.editable:
            log.info(self.report_editable(spec, setup_script))
            return []
        else:
            return self.build_and_install(setup_script, setup_base)

    def egg_distribution(self, egg_path):
        if os.path.isdir(egg_path):
            metadata = PathMetadata(egg_path,os.path.join(egg_path,'EGG-INFO'))
        else:
            metadata = EggMetadata(zipimport.zipimporter(egg_path))
        return Distribution.from_filename(egg_path,metadata=metadata)

    def install_egg(self, egg_path, tmpdir):
        destination = os.path.join(self.install_dir,os.path.basename(egg_path))
        destination = os.path.abspath(destination)
        if not self.dry_run:
            ensure_directory(destination)

        dist = self.egg_distribution(egg_path)
        self.check_conflicts(dist)
        if not samefile(egg_path, destination):
            if os.path.isdir(destination) and not os.path.islink(destination):
                dir_util.remove_tree(destination, dry_run=self.dry_run)
            elif os.path.exists(destination):
                self.execute(os.unlink,(destination,),"Removing "+destination)
            uncache_zipdir(destination)
            if os.path.isdir(egg_path):
                if egg_path.startswith(tmpdir):
                    f,m = shutil.move, "Moving"
                else:
                    f,m = shutil.copytree, "Copying"
            elif self.should_unzip(dist):
                self.mkpath(destination)
                f,m = self.unpack_and_compile, "Extracting"
            elif egg_path.startswith(tmpdir):
                f,m = shutil.move, "Moving"
            else:
                f,m = shutil.copy2, "Copying"

            self.execute(f, (egg_path, destination),
                (m+" %s to %s") %
                (os.path.basename(egg_path),os.path.dirname(destination)))

        self.add_output(destination)
        return self.egg_distribution(destination)

    def install_exe(self, dist_filename, tmpdir):
        # See if it's valid, get data
        cfg = extract_wininst_cfg(dist_filename)
        if cfg is None:
            raise DistutilsError(
                "%s is not a valid distutils Windows .exe" % dist_filename
            )
        # Create a dummy distribution object until we build the real distro
        dist = Distribution(None,
            project_name=cfg.get('metadata','name'),
            version=cfg.get('metadata','version'), platform=get_platform()
        )

        # Convert the .exe to an unpacked egg
        egg_path = dist.location = os.path.join(tmpdir, dist.egg_name()+'.egg')
        egg_tmp  = egg_path+'.tmp'
        egg_info = os.path.join(egg_tmp, 'EGG-INFO')
        pkg_inf = os.path.join(egg_info, 'PKG-INFO')
        ensure_directory(pkg_inf)   # make sure EGG-INFO dir exists
        dist._provider = PathMetadata(egg_tmp, egg_info)    # XXX
        self.exe_to_egg(dist_filename, egg_tmp)

        # Write EGG-INFO/PKG-INFO
        if not os.path.exists(pkg_inf):
            f = open(pkg_inf,'w')
            f.write('Metadata-Version: 1.0\n')
            for k,v in cfg.items('metadata'):
                if k<>'target_version':
                    f.write('%s: %s\n' % (k.replace('_','-').title(), v))
            f.close()
        script_dir = os.path.join(egg_info,'scripts')
        self.delete_blockers(   # delete entry-point scripts to avoid duping
            [os.path.join(script_dir,args[0]) for args in get_script_args(dist)]
        )
        # Build .egg file from tmpdir
        bdist_egg.make_zipfile(
            egg_path, egg_tmp, verbose=self.verbose, dry_run=self.dry_run
        )
        # install the .egg
        return self.install_egg(egg_path, tmpdir)

    def exe_to_egg(self, dist_filename, egg_tmp):
        """Extract a bdist_wininst to the directories an egg would use"""
        # Check for .pth file and set up prefix translations
        prefixes = get_exe_prefixes(dist_filename)
        to_compile = []
        native_libs = []
        top_level = {}
        def process(src,dst):
            s = src.lower()
            for old,new in prefixes:
                if s.startswith(old):
                    src = new+src[len(old):]
                    parts = src.split('/')
                    dst = os.path.join(egg_tmp, *parts)
                    dl = dst.lower()
                    if dl.endswith('.pyd') or dl.endswith('.dll'):
                        parts[-1] = bdist_egg.strip_module(parts[-1])
                        top_level[os.path.splitext(parts[0])[0]] = 1
                        native_libs.append(src)
                    elif dl.endswith('.py') and old!='SCRIPTS/':
                        top_level[os.path.splitext(parts[0])[0]] = 1
                        to_compile.append(dst)
                    return dst
            if not src.endswith('.pth'):
                log.warn("WARNING: can't process %s", src)
            return None
        # extract, tracking .pyd/.dll->native_libs and .py -> to_compile
        unpack_archive(dist_filename, egg_tmp, process)
        stubs = []
        for res in native_libs:
            if res.lower().endswith('.pyd'):    # create stubs for .pyd's
                parts = res.split('/')
                resource = parts[-1]
                parts[-1] = bdist_egg.strip_module(parts[-1])+'.py'
                pyfile = os.path.join(egg_tmp, *parts)
                to_compile.append(pyfile); stubs.append(pyfile)
                bdist_egg.write_stub(resource, pyfile)
        self.byte_compile(to_compile)   # compile .py's
        bdist_egg.write_safety_flag(os.path.join(egg_tmp,'EGG-INFO'),
            bdist_egg.analyze_egg(egg_tmp, stubs))  # write zip-safety flag

        for name in 'top_level','native_libs':
            if locals()[name]:
                txt = os.path.join(egg_tmp, 'EGG-INFO', name+'.txt')
                if not os.path.exists(txt):
                    f = open(txt,'w')
                    f.write('\n'.join(locals()[name])+'\n')
                    f.close()

    def check_conflicts(self, dist):
        """Verify that there are no conflicting "old-style" packages"""

        return dist     # XXX temporarily disable until new strategy is stable
        from imp import find_module, get_suffixes
        from glob import glob

        blockers = []
        names = dict.fromkeys(dist._get_metadata('top_level.txt')) # XXX private attr

        exts = {'.pyc':1, '.pyo':1}     # get_suffixes() might leave one out
        for ext,mode,typ in get_suffixes():
            exts[ext] = 1

        for path,files in expand_paths([self.install_dir]+self.all_site_dirs):
            for filename in files:
                base,ext = os.path.splitext(filename)
                if base in names:
                    if not ext:
                        # no extension, check for package
                        try:
                            f, filename, descr = find_module(base, [path])
                        except ImportError:
                            continue
                        else:
                            if f: f.close()
                            if filename not in blockers:
                                blockers.append(filename)
                    elif ext in exts and base!='site':  # XXX ugh
                        blockers.append(os.path.join(path,filename))
        if blockers:
            self.found_conflicts(dist, blockers)

        return dist

    def found_conflicts(self, dist, blockers):
        if self.delete_conflicting:
            log.warn("Attempting to delete conflicting packages:")
            return self.delete_blockers(blockers)

        msg = """\
-------------------------------------------------------------------------
CONFLICT WARNING:

The following modules or packages have the same names as modules or
packages being installed, and will be *before* the installed packages in
Python's search path.  You MUST remove all of the relevant files and
directories before you will be able to use the package(s) you are
installing:

   %s

""" % '\n   '.join(blockers)

        if self.ignore_conflicts_at_my_risk:
            msg += """\
(Note: you can run EasyInstall on '%s' with the
--delete-conflicting option to attempt deletion of the above files
and/or directories.)
""" % dist.project_name
        else:
            msg += """\
Note: you can attempt this installation again with EasyInstall, and use
either the --delete-conflicting (-D) option or the
--ignore-conflicts-at-my-risk option, to either delete the above files
and directories, or to ignore the conflicts, respectively.  Note that if
you ignore the conflicts, the installed package(s) may not work.
"""
        msg += """\
-------------------------------------------------------------------------
"""
        sys.stderr.write(msg)
        sys.stderr.flush()
        if not self.ignore_conflicts_at_my_risk:
            raise DistutilsError("Installation aborted due to conflicts")

    def installation_report(self, req, dist, what="Installed"):
        """Helpful installation message for display to package users"""
        msg = "\n%(what)s %(eggloc)s%(extras)s"
        if self.multi_version and not self.no_report:
            msg += """

Because this distribution was installed --multi-version, before you can
import modules from this package in an application, you will need to
'import pkg_resources' and then use a 'require()' call similar to one of
these examples, in order to select the desired version:

    pkg_resources.require("%(name)s")  # latest installed version
    pkg_resources.require("%(name)s==%(version)s")  # this exact version
    pkg_resources.require("%(name)s>=%(version)s")  # this version or higher
"""
            if self.install_dir not in map(normalize_path,sys.path):
                msg += """

Note also that the installation directory must be on sys.path at runtime for
this to work.  (e.g. by being the application's script directory, by being on
PYTHONPATH, or by being added to sys.path by your code.)
"""
        eggloc = dist.location
        name = dist.project_name
        version = dist.version
        extras = '' # TODO: self.report_extras(req, dist)
        return msg % locals()

    def report_editable(self, spec, setup_script):
        dirname = os.path.dirname(setup_script)
        python = sys.executable
        return """\nExtracted editable version of %(spec)s to %(dirname)s

If it uses setuptools in its setup script, you can activate it in
"development" mode by going to that directory and running::

    %(python)s setup.py develop

See the setuptools documentation for the "develop" command for more info.
""" % locals()

    def run_setup(self, setup_script, setup_base, args):
        sys.modules.setdefault('distutils.command.bdist_egg', bdist_egg)
        sys.modules.setdefault('distutils.command.egg_info', egg_info)

        args = list(args)
        if self.verbose>2:
            v = 'v' * (self.verbose - 1)
            args.insert(0,'-'+v)
        elif self.verbose<2:
            args.insert(0,'-q')
        if self.dry_run:
            args.insert(0,'-n')
        log.info(
            "Running %s %s", setup_script[len(setup_base)+1:], ' '.join(args)
        )
        try:
            run_setup(setup_script, args)
        except SystemExit, v:
            raise DistutilsError("Setup script exited with %s" % (v.args[0],))

    def build_and_install(self, setup_script, setup_base):
        args = ['bdist_egg', '--dist-dir']

        dist_dir = tempfile.mkdtemp(
            prefix='egg-dist-tmp-', dir=os.path.dirname(setup_script)
        )
        try:
            self._set_fetcher_options(os.path.dirname(setup_script))
            args.append(dist_dir)

            self.run_setup(setup_script, setup_base, args)
            all_eggs = Environment([dist_dir])
            eggs = []
            for key in all_eggs:
                for dist in all_eggs[key]:
                    eggs.append(self.install_egg(dist.location, setup_base))
            if not eggs and not self.dry_run:
                log.warn("No eggs found in %s (setup script problem?)",
                    dist_dir)
            return eggs
        finally:
            rmtree(dist_dir)
            log.set_verbosity(self.verbose) # restore our log verbosity

    def _set_fetcher_options(self, base):
        """
        When easy_install is about to run bdist_egg on a source dist, that
        source dist might have 'setup_requires' directives, requiring
        additional fetching. Ensure the fetcher options given to easy_install
        are available to that command as well.
        """
        # find the fetch options from easy_install and write them out
        #  to the setup.cfg file.
        ei_opts = self.distribution.get_option_dict('easy_install').copy()
        fetch_directives = (
            'find_links', 'site_dirs', 'index_url', 'optimize',
            'site_dirs', 'allow_hosts',
        )
        fetch_options = {}
        for key, val in ei_opts.iteritems():
            if key not in fetch_directives: continue
            fetch_options[key.replace('_', '-')] = val[1]
        # create a settings dictionary suitable for `edit_config`
        settings = dict(easy_install=fetch_options)
        cfg_filename = os.path.join(base, 'setup.cfg')
        setopt.edit_config(cfg_filename, settings)


    def update_pth(self,dist):
        if self.pth_file is None:
            return

        for d in self.pth_file[dist.key]:    # drop old entries
            if self.multi_version or d.location != dist.location:
                log.info("Removing %s from easy-install.pth file", d)
                self.pth_file.remove(d)
                if d.location in self.shadow_path:
                    self.shadow_path.remove(d.location)

        if not self.multi_version:
            if dist.location in self.pth_file.paths:
                log.info(
                    "%s is already the active version in easy-install.pth",
                    dist
                )
            else:
                log.info("Adding %s to easy-install.pth file", dist)
                self.pth_file.add(dist) # add new entry
                if dist.location not in self.shadow_path:
                    self.shadow_path.append(dist.location)

        if not self.dry_run:

            self.pth_file.save()
            if dist.key=='distribute':
                # Ensure that setuptools itself never becomes unavailable!
                # XXX should this check for latest version?
                filename = os.path.join(self.install_dir,'setuptools.pth')
                if os.path.islink(filename): os.unlink(filename)
                f = open(filename, 'wt')
                f.write(self.pth_file.make_relative(dist.location)+'\n')
                f.close()

    def unpack_progress(self, src, dst):
        # Progress filter for unpacking
        log.debug("Unpacking %s to %s", src, dst)
        return dst     # only unpack-and-compile skips files for dry run

    def unpack_and_compile(self, egg_path, destination):
        to_compile = []; to_chmod = []

        def pf(src,dst):
            if dst.endswith('.py') and not src.startswith('EGG-INFO/'):
                to_compile.append(dst)
                to_chmod.append(dst)
            elif dst.endswith('.dll') or dst.endswith('.so'):
                to_chmod.append(dst)
            self.unpack_progress(src,dst)
            return not self.dry_run and dst or None

        unpack_archive(egg_path, destination, pf)
        self.byte_compile(to_compile)
        if not self.dry_run:
            for f in to_chmod:
                mode = ((os.stat(f)[stat.ST_MODE]) | 0555) & 07755
                chmod(f, mode)

    def byte_compile(self, to_compile):
        if _dont_write_bytecode:
            self.warn('byte-compiling is disabled, skipping.')
            return

        from distutils.util import byte_compile
        try:
            # try to make the byte compile messages quieter
            log.set_verbosity(self.verbose - 1)

            byte_compile(to_compile, optimize=0, force=1, dry_run=self.dry_run)
            if self.optimize:
                byte_compile(
                    to_compile, optimize=self.optimize, force=1,
                    dry_run=self.dry_run
                )
        finally:
            log.set_verbosity(self.verbose)     # restore original verbosity








    def no_default_version_msg(self):
        return """bad install directory or PYTHONPATH

You are attempting to install a package to a directory that is not
on PYTHONPATH and which Python does not read ".pth" files from.  The
installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:

    %s

and your PYTHONPATH environment variable currently contains:

    %r

Here are some of your options for correcting the problem:

* You can choose a different installation directory, i.e., one that is
  on PYTHONPATH or supports .pth files

* You can add the installation directory to the PYTHONPATH environment
  variable.  (It must then also be on PYTHONPATH whenever you run
  Python and want to use the package(s) you are installing.)

* You can set up the installation directory to support ".pth" files by
  using one of the approaches described here:

  http://packages.python.org/distribute/easy_install.html#custom-installation-locations

Please make the appropriate changes for your system and try again.""" % (
        self.install_dir, os.environ.get('PYTHONPATH','')
    )










    def install_site_py(self):
        """Make sure there's a site.py in the target dir, if needed"""

        if self.sitepy_installed:
            return  # already did it, or don't need to

        sitepy = os.path.join(self.install_dir, "site.py")
        source = resource_string(Requirement.parse("distribute"), "site.py")
        current = ""

        if os.path.exists(sitepy):
            log.debug("Checking existing site.py in %s", self.install_dir)
            f = open(sitepy,'rb')
            current = f.read()
            # we want str, not bytes
            if sys.version_info >= (3,):
                current = current.decode()

            f.close()
            if not current.startswith('def __boot():'):
                raise DistutilsError(
                    "%s is not a setuptools-generated site.py; please"
                    " remove it." % sitepy
                )

        if current != source:
            log.info("Creating %s", sitepy)
            if not self.dry_run:
                ensure_directory(sitepy)
                f = open(sitepy,'wb')
                f.write(source)
                f.close()
            self.byte_compile([sitepy])

        self.sitepy_installed = True




    def create_home_path(self):
        """Create directories under ~."""
        if not self.user:
            return
        home = convert_path(os.path.expanduser("~"))
        for name, path in self.config_vars.iteritems():
            if path.startswith(home) and not os.path.isdir(path):
                self.debug_print("os.makedirs('%s', 0700)" % path)
                os.makedirs(path, 0700)







    INSTALL_SCHEMES = dict(
        posix = dict(
            install_dir = '$base/lib/python$py_version_short/site-packages',
            script_dir  = '$base/bin',
        ),
    )

    DEFAULT_SCHEME = dict(
        install_dir = '$base/Lib/site-packages',
        script_dir  = '$base/Scripts',
    )

    def _expand(self, *attrs):
        config_vars = self.get_finalized_command('install').config_vars

        if self.prefix:
            # Set default install_dir/scripts from --prefix
            config_vars = config_vars.copy()
            config_vars['base'] = self.prefix
            scheme = self.INSTALL_SCHEMES.get(os.name,self.DEFAULT_SCHEME)
            for attr,val in scheme.items():
                if getattr(self,attr,None) is None:
                    setattr(self,attr,val)

        from distutils.util import subst_vars
        for attr in attrs:
            val = getattr(self, attr)
            if val is not None:
                val = subst_vars(val, config_vars)
                if os.name == 'posix':
                    val = os.path.expanduser(val)
                setattr(self, attr, val)









def get_site_dirs():
    # return a list of 'site' dirs
    sitedirs = filter(None,os.environ.get('PYTHONPATH','').split(os.pathsep))
    prefixes = [sys.prefix]
    if sys.exec_prefix != sys.prefix:
        prefixes.append(sys.exec_prefix)
    for prefix in prefixes:
        if prefix:
            if sys.platform in ('os2emx', 'riscos'):
                sitedirs.append(os.path.join(prefix, "Lib", "site-packages"))
            elif os.sep == '/':
                sitedirs.extend([os.path.join(prefix,
                                         "lib",
                                         "python" + sys.version[:3],
                                         "site-packages"),
                            os.path.join(prefix, "lib", "site-python")])
            else:
                sitedirs.extend(
                    [prefix, os.path.join(prefix, "lib", "site-packages")]
                )
            if sys.platform == 'darwin':
                # for framework builds *only* we add the standard Apple
                # locations. Currently only per-user, but /Library and
                # /Network/Library could be added too
                if 'Python.framework' in prefix:
                    home = os.environ.get('HOME')
                    if home:
                        sitedirs.append(
                            os.path.join(home,
                                         'Library',
                                         'Python',
                                         sys.version[:3],
                                         'site-packages'))
    for plat_specific in (0,1):
        site_lib = get_python_lib(plat_specific)
        if site_lib not in sitedirs: sitedirs.append(site_lib)

    if HAS_USER_SITE:
        sitedirs.append(site.USER_SITE)

    sitedirs = map(normalize_path, sitedirs)

    return sitedirs


def expand_paths(inputs):
    """Yield sys.path directories that might contain "old-style" packages"""

    seen = {}

    for dirname in inputs:
        dirname = normalize_path(dirname)
        if dirname in seen:
            continue

        seen[dirname] = 1
        if not os.path.isdir(dirname):
            continue

        files = os.listdir(dirname)
        yield dirname, files

        for name in files:
            if not name.endswith('.pth'):
                # We only care about the .pth files
                continue
            if name in ('easy-install.pth','setuptools.pth'):
                # Ignore .pth files that we control
                continue

            # Read the .pth file
            f = open(os.path.join(dirname,name))
            lines = list(yield_lines(f))
            f.close()

            # Yield existing non-dupe, non-import directory lines from it
            for line in lines:
                if not line.startswith("import"):
                    line = normalize_path(line.rstrip())
                    if line not in seen:
                        seen[line] = 1
                        if not os.path.isdir(line):
                            continue
                        yield line, os.listdir(line)


def extract_wininst_cfg(dist_filename):
    """Extract configuration data from a bdist_wininst .exe

    Returns a ConfigParser.RawConfigParser, or None
    """
    f = open(dist_filename,'rb')
    try:
        endrec = zipfile._EndRecData(f)
        if endrec is None:
            return None

        prepended = (endrec[9] - endrec[5]) - endrec[6]
        if prepended < 12:  # no wininst data here
            return None
        f.seek(prepended-12)

        import struct, StringIO, ConfigParser
        tag, cfglen, bmlen = struct.unpack("<iii",f.read(12))
        if tag not in (0x1234567A, 0x1234567B):
            return None     # not a valid tag

        f.seek(prepended-(12+cfglen))
        cfg = ConfigParser.RawConfigParser({'version':'','target_version':''})
        try:
            part = f.read(cfglen)
            # part is in bytes, but we need to read up to the first null
            #  byte.
            if sys.version_info >= (2,6):
                null_byte = bytes([0])
            else:
                null_byte = chr(0)
            config = part.split(null_byte, 1)[0]
            # Now the config is in bytes, but on Python 3, it must be
            #  unicode for the RawConfigParser, so decode it. Is this the
            #  right encoding?
            config = config.decode('ascii')
            cfg.readfp(StringIO.StringIO(config))
        except ConfigParser.Error:
            return None
        if not cfg.has_section('metadata') or not cfg.has_section('Setup'):
            return None
        return cfg

    finally:
        f.close()








def get_exe_prefixes(exe_filename):
    """Get exe->egg path translations for a given .exe file"""

    prefixes = [
        ('PURELIB/', ''), ('PLATLIB/pywin32_system32', ''),
        ('PLATLIB/', ''),
        ('SCRIPTS/', 'EGG-INFO/scripts/'),
        ('DATA/LIB/site-packages', ''),
    ]
    z = zipfile.ZipFile(exe_filename)
    try:
        for info in z.infolist():
            name = info.filename
            parts = name.split('/')
            if len(parts)==3 and parts[2]=='PKG-INFO':
                if parts[1].endswith('.egg-info'):
                    prefixes.insert(0,('/'.join(parts[:2]), 'EGG-INFO/'))
                    break
            if len(parts)<>2 or not name.endswith('.pth'):
                continue
            if name.endswith('-nspkg.pth'):
                continue
            if parts[0].upper() in ('PURELIB','PLATLIB'):
                contents = z.read(name)
                if sys.version_info >= (3,):
                    contents = contents.decode()
                for pth in yield_lines(contents):
                    pth = pth.strip().replace('\\','/')
                    if not pth.startswith('import'):
                        prefixes.append((('%s/%s/' % (parts[0],pth)), ''))
    finally:
        z.close()
    prefixes = [(x.lower(),y) for x, y in prefixes]
    prefixes.sort(); prefixes.reverse()
    return prefixes


def parse_requirement_arg(spec):
    try:
        return Requirement.parse(spec)
    except ValueError:
        raise DistutilsError(
            "Not a URL, existing file, or requirement spec: %r" % (spec,)
        )

class PthDistributions(Environment):
    """A .pth file with Distribution paths in it"""

    dirty = False

    def __init__(self, filename, sitedirs=()):
        self.filename = filename; self.sitedirs=map(normalize_path, sitedirs)
        self.basedir = normalize_path(os.path.dirname(self.filename))
        self._load(); Environment.__init__(self, [], None, None)
        for path in yield_lines(self.paths):
            map(self.add, find_distributions(path, True))

    def _load(self):
        self.paths = []
        saw_import = False
        seen = dict.fromkeys(self.sitedirs)
        if os.path.isfile(self.filename):
            f = open(self.filename,'rt')
            for line in f:
                if line.startswith('import'):
                    saw_import = True
                    continue
                path = line.rstrip()
                self.paths.append(path)
                if not path.strip() or path.strip().startswith('#'):
                    continue
                # skip non-existent paths, in case somebody deleted a package
                # manually, and duplicate paths as well
                path = self.paths[-1] = normalize_path(
                    os.path.join(self.basedir,path)
                )
                if not os.path.exists(path) or path in seen:
                    self.paths.pop()    # skip it
                    self.dirty = True   # we cleaned up, so we're dirty now :)
                    continue
                seen[path] = 1
            f.close()

        if self.paths and not saw_import:
            self.dirty = True   # ensure anything we touch has import wrappers
        while self.paths and not self.paths[-1].strip():
            self.paths.pop()

    def save(self):
        """Write changed .pth file back to disk"""
        if not self.dirty:
            return

        data = '\n'.join(map(self.make_relative,self.paths))
        if data:
            log.debug("Saving %s", self.filename)
            data = (
                "import sys; sys.__plen = len(sys.path)\n"
                "%s\n"
                "import sys; new=sys.path[sys.__plen:];"
                " del sys.path[sys.__plen:];"
                " p=getattr(sys,'__egginsert',0); sys.path[p:p]=new;"
                " sys.__egginsert = p+len(new)\n"
            ) % data

            if os.path.islink(self.filename):
                os.unlink(self.filename)
            f = open(self.filename,'wt')
            f.write(data); f.close()

        elif os.path.exists(self.filename):
            log.debug("Deleting empty %s", self.filename)
            os.unlink(self.filename)

        self.dirty = False

    def add(self,dist):
        """Add `dist` to the distribution map"""
        if (dist.location not in self.paths and (
                dist.location not in self.sitedirs or
                dist.location == os.getcwd() #account for '.' being in PYTHONPATH
                )):
            self.paths.append(dist.location)
            self.dirty = True
        Environment.add(self,dist)

    def remove(self,dist):
        """Remove `dist` from the distribution map"""
        while dist.location in self.paths:
            self.paths.remove(dist.location); self.dirty = True
        Environment.remove(self,dist)


    def make_relative(self,path):
        npath, last = os.path.split(normalize_path(path))
        baselen = len(self.basedir)
        parts = [last]
        sep = os.altsep=='/' and '/' or os.sep
        while len(npath)>=baselen:
            if npath==self.basedir:
                parts.append(os.curdir)
                parts.reverse()
                return sep.join(parts)
            npath, last = os.path.split(npath)
            parts.append(last)
        else:
            return path

def get_script_header(script_text, executable=sys_executable, wininst=False):
    """Create a #! line, getting options (if any) from script_text"""
    from distutils.command.build_scripts import first_line_re

    # first_line_re in Python >=3.1.4 and >=3.2.1 is a bytes pattern.
    if not isinstance(first_line_re.pattern, str):
        first_line_re = re.compile(first_line_re.pattern.decode())

    first = (script_text+'\n').splitlines()[0]
    match = first_line_re.match(first)
    options = ''
    if match:
        options = match.group(1) or ''
        if options: options = ' '+options
    if wininst:
        executable = "python.exe"
    else:
        executable = nt_quote_arg(executable)
    hdr = "#!%(executable)s%(options)s\n" % locals()
    if not isascii(hdr):
        # Non-ascii path to sys.executable, use -x to prevent warnings
        if options:
            if options.strip().startswith('-'):
                options = ' -x'+options.strip()[1:]
            # else: punt, we can't do it, let the warning happen anyway
        else:
            options = ' -x'
    executable = fix_jython_executable(executable, options)
    hdr = "#!%(executable)s%(options)s\n" % locals()
    return hdr

def auto_chmod(func, arg, exc):
    if func is os.remove and os.name=='nt':
        chmod(arg, stat.S_IWRITE)
        return func(arg)
    exc = sys.exc_info()
    raise exc[0], (exc[1][0], exc[1][1] + (" %s %s" % (func,arg)))

def uncache_zipdir(path):
    """Ensure that the importer caches dont have stale info for `path`"""
    from zipimport import _zip_directory_cache as zdc
    _uncache(path, zdc)
    _uncache(path, sys.path_importer_cache)

def _uncache(path, cache):
    if path in cache:
        del cache[path]
    else:
        path = normalize_path(path)
        for p in cache:
            if normalize_path(p)==path:
                del cache[p]
                return

def is_python(text, filename='<string>'):
    "Is this string a valid Python script?"
    try:
        compile(text, filename, 'exec')
    except (SyntaxError, TypeError):
        return False
    else:
        return True

def is_sh(executable):
    """Determine if the specified executable is a .sh (contains a #! line)"""
    try:
        fp = open(executable)
        magic = fp.read(2)
        fp.close()
    except (OSError,IOError): return executable
    return magic == '#!'

def nt_quote_arg(arg):
    """Quote a command line argument according to Windows parsing rules"""

    result = []
    needquote = False
    nb = 0

    needquote = (" " in arg) or ("\t" in arg)
    if needquote:
        result.append('"')

    for c in arg:
        if c == '\\':
            nb += 1
        elif c == '"':
            # double preceding backslashes, then add a \"
            result.append('\\' * (nb*2) + '\\"')
            nb = 0
        else:
            if nb:
                result.append('\\' * nb)
                nb = 0
            result.append(c)

    if nb:
        result.append('\\' * nb)

    if needquote:
        result.append('\\' * nb)    # double the trailing backslashes
        result.append('"')

    return ''.join(result)









def is_python_script(script_text, filename):
    """Is this text, as a whole, a Python script? (as opposed to shell/bat/etc.
    """
    if filename.endswith('.py') or filename.endswith('.pyw'):
        return True     # extension says it's Python
    if is_python(script_text, filename):
        return True     # it's syntactically valid Python
    if script_text.startswith('#!'):
        # It begins with a '#!' line, so check if 'python' is in it somewhere
        return 'python' in script_text.splitlines()[0].lower()

    return False    # Not any Python I can recognize

try:
    from os import chmod as _chmod
except ImportError:
    # Jython compatibility
    def _chmod(*args): pass

def chmod(path, mode):
    log.debug("changing mode of %s to %o", path, mode)
    try:
        _chmod(path, mode)
    except os.error, e:
        log.debug("chmod failed: %s", e)

def fix_jython_executable(executable, options):
    if sys.platform.startswith('java') and is_sh(executable):
        # Workaround for Jython is not needed on Linux systems.
        import java
        if java.lang.System.getProperty("os.name") == "Linux":
            return executable

        # Workaround Jython's sys.executable being a .sh (an invalid
        # shebang line interpreter)
        if options:
            # Can't apply the workaround, leave it broken
            log.warn("WARNING: Unable to adapt shebang line for Jython,"
                             " the following script is NOT executable\n"
                     "         see http://bugs.jython.org/issue1112 for"
                             " more information.")
        else:
            return '/usr/bin/env %s' % executable
    return executable


def get_script_args(dist, executable=sys_executable, wininst=False):
    """Yield write_script() argument tuples for a distribution's entrypoints"""
    spec = str(dist.as_requirement())
    header = get_script_header("", executable, wininst)
    for group in 'console_scripts', 'gui_scripts':
        for name, ep in dist.get_entry_map(group).items():
            script_text = (
                "# EASY-INSTALL-ENTRY-SCRIPT: %(spec)r,%(group)r,%(name)r\n"
                "__requires__ = %(spec)r\n"
                "import sys\n"
                "from pkg_resources import load_entry_point\n"
                "\n"
                "if __name__ == '__main__':"
                "\n"
                "    sys.exit(\n"
                "        load_entry_point(%(spec)r, %(group)r, %(name)r)()\n"
                "    )\n"
            ) % locals()
            if sys.platform=='win32' or wininst:
                # On Windows/wininst, add a .py extension and an .exe launcher
                if group=='gui_scripts':
                    launcher_type = 'gui'
                    ext = '-script.pyw'
                    old = ['.pyw']
                    new_header = re.sub('(?i)python.exe','pythonw.exe',header)
                else:
                    launcher_type = 'cli'
                    ext = '-script.py'
                    old = ['.py','.pyc','.pyo']
                    new_header = re.sub('(?i)pythonw.exe','python.exe',header)
                if os.path.exists(new_header[2:-1]) or sys.platform!='win32':
                    hdr = new_header
                else:
                    hdr = header
                yield (name+ext, hdr+script_text, 't', [name+x for x in old])
                yield (
                    name+'.exe', get_win_launcher(launcher_type),
                    'b' # write in binary mode
                )
                if not is_64bit():
                    # install a manifest for the launcher to prevent Windows
                    #  from detecting it as an installer (which it will for
                    #  launchers like easy_install.exe). Consider only
                    #  adding a manifest for launchers detected as installers.
                    #  See Distribute #143 for details.
                    m_name = name + '.exe.manifest'
                    yield (m_name, load_launcher_manifest(name), 't')
            else:
                # On other platforms, we assume the right thing to do is to
                # just write the stub with no extension.
                yield (name, header+script_text)

def get_win_launcher(type):
    """
    Load the Windows launcher (executable) suitable for launching a script.

    `type` should be either 'cli' or 'gui'

    Returns the executable as a byte string.
    """
    launcher_fn = '%s.exe' % type
    if platform.machine().lower()=='arm':
        launcher_fn = launcher_fn.replace(".", "-arm.")
    if is_64bit():
        launcher_fn = launcher_fn.replace(".", "-64.")
    else:
        launcher_fn = launcher_fn.replace(".", "-32.")
    return resource_string('setuptools', launcher_fn)

def load_launcher_manifest(name):
    manifest = pkg_resources.resource_string(__name__, 'launcher manifest.xml')
    if sys.version_info[0] < 3:
        return manifest % vars()
    else:
        return manifest.decode('utf-8') % vars()

def rmtree(path, ignore_errors=False, onerror=auto_chmod):
    """Recursively delete a directory tree.

    This code is taken from the Python 2.4 version of 'shutil', because
    the 2.3 version doesn't really work right.
    """
    if ignore_errors:
        def onerror(*args):
            pass
    elif onerror is None:
        def onerror(*args):
            raise
    names = []
    try:
        names = os.listdir(path)
    except os.error, err:
        onerror(os.listdir, path, sys.exc_info())
    for name in names:
        fullname = os.path.join(path, name)
        try:
            mode = os.lstat(fullname).st_mode
        except os.error:
            mode = 0
        if stat.S_ISDIR(mode):
            rmtree(fullname, ignore_errors, onerror)
        else:
            try:
                os.remove(fullname)
            except os.error, err:
                onerror(os.remove, fullname, sys.exc_info())
    try:
        os.rmdir(path)
    except os.error:
        onerror(os.rmdir, path, sys.exc_info())

def current_umask():
    tmp = os.umask(022)
    os.umask(tmp)
    return tmp

def bootstrap():
    # This function is called when setuptools*.egg is run using /bin/sh
    import setuptools; argv0 = os.path.dirname(setuptools.__path__[0])
    sys.argv[0] = argv0; sys.argv.append(argv0); main()

def main(argv=None, **kw):
    from setuptools import setup
    from setuptools.dist import Distribution
    import distutils.core

    USAGE = """\
usage: %(script)s [options] requirement_or_url ...
   or: %(script)s --help
"""

    def gen_usage (script_name):
        script = os.path.basename(script_name)
        return USAGE % vars()

    def with_ei_usage(f):
        old_gen_usage = distutils.core.gen_usage
        try:
            distutils.core.gen_usage = gen_usage
            return f()
        finally:
            distutils.core.gen_usage = old_gen_usage

    class DistributionWithoutHelpCommands(Distribution):
        common_usage = ""

        def _show_help(self,*args,**kw):
            with_ei_usage(lambda: Distribution._show_help(self,*args,**kw))

        def find_config_files(self):
            files = Distribution.find_config_files(self)
            if 'setup.cfg' in files:
                files.remove('setup.cfg')
            return files

    if argv is None:
        argv = sys.argv[1:]

    with_ei_usage(lambda:
        setup(
            script_args = ['-q','easy_install', '-v']+argv,
            script_name = sys.argv[0] or 'easy_install',
            distclass=DistributionWithoutHelpCommands, **kw
        )
    )
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.