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setup: merge in changes to ez_setup.py from the upstream setuptools project

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This commit is contained in:
Zooko O'Whielacronx 2008-03-26 12:11:28 -07:00
parent 39272a1b6d
commit 4efbd09f48
1 changed files with 106 additions and 83 deletions
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189
ez_setup.py
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@ -22,6 +22,8 @@ md5_data = {
'setuptools-0.6c7.egg': 'bd04f1074b86a1b35618cb2b96b38ffa',
}
import sys, os
def _validate_md5(egg_name, data):
if egg_name in md5_data:
from md5 import md5
@ -34,71 +36,11 @@ def _validate_md5(egg_name, data):
sys.exit(2)
return data
# The following code to parse versions is copied from pkg_resources.py so that
# we can parse versions without importing that module.
import re
component_re = re.compile(r'(\d+ | [a-z]+ | \.| -)', re.VERBOSE)
replace = {'pre':'c', 'preview':'c','-':'final-','rc':'c','dev':'@'}.get
def _parse_version_parts(s):
for part in component_re.split(s):
part = replace(part,part)
if not part or part=='.':
continue
if part[:1] in '0123456789':
yield part.zfill(8) # pad for numeric comparison
else:
yield '*'+part
yield '*final' # ensure that alpha/beta/candidate are before final
def parse_version(s):
parts = []
for part in _parse_version_parts(s.lower()):
if part.startswith('*'):
if part<'*final': # remove '-' before a prerelease tag
while parts and parts[-1]=='*final-': parts.pop()
# remove trailing zeros from each series of numeric parts
while parts and parts[-1]=='00000000':
parts.pop()
parts.append(part)
return tuple(parts)
def setuptools_is_new_enough(required_version):
"""Return True if setuptools is already installed and has a version
number >= required_version."""
if 'pkg_resources' in sys.modules:
import pkg_resources
try:
pkg_resources.require('setuptools >= %s' % (required_version,))
except pkg_resources.VersionConflict:
# An insufficiently new version is installed.
return False
else:
return True
else:
try:
import pkg_resources
except ImportError:
# Okay it is not installed.
return False
else:
try:
pkg_resources.require('setuptools >= %s' % (required_version,))
except pkg_resources.VersionConflict:
# An insufficiently new version is installed.
pkg_resources.__dict__.clear() # "If you want to be absolutely sure... before deleting it." --said PJE on IRC
del sys.modules['pkg_resources']
return False
else:
pkg_resources.__dict__.clear() # "If you want to be absolutely sure... before deleting it." --said PJE on IRC
del sys.modules['pkg_resources']
return True
def use_setuptools(
version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=DEFAULT_DIR,
min_version=None, download_delay=0
):
version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
min_version=None, download_delay=15
):
"""Automatically find/download setuptools and make it available on sys.path
`version` should be a valid setuptools version number that is available as
@ -115,14 +57,36 @@ def use_setuptools(
"""
if min_version is None:
min_version = version
if not setuptools_is_new_enough(min_version):
egg = download_setuptools(version, min_version, download_base, to_dir, download_delay)
was_imported = 'pkg_resources' in sys.modules or 'setuptools' in sys.modules
def do_download():
egg = download_setuptools(version, download_base, to_dir, download_delay)
sys.path.insert(0, egg)
import setuptools; setuptools.bootstrap_install_from = egg
try:
import pkg_resources
except ImportError:
return do_download()
try:
pkg_resources.require("setuptools>="+min_version); return
except pkg_resources.VersionConflict, e:
if was_imported:
print >>sys.stderr, (
"The required version of setuptools (>=%s) is not available, and\n"
"can't be installed while this script is running. Please install\n"
" a more recent version first, using 'easy_install -U setuptools'."
"\n\n(Currently using %r)"
) % (min_version, e.args[0])
sys.exit(2)
else:
del pkg_resources, sys.modules['pkg_resources'] # reload ok
return do_download()
except pkg_resources.DistributionNotFound:
return do_download()
def download_setuptools(
version=DEFAULT_VERSION, min_version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
delay = 0
version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir,
delay = 15
):
"""Download setuptools from a specified location and return its filename
@ -142,8 +106,8 @@ def download_setuptools(
if delay:
log.warn("""
---------------------------------------------------------------------------
This script requires setuptools version >= %s to run (even to display
help). I will attempt to download setuptools for you (from
This script requires setuptools version %s to run (even to display
help). I will attempt to download it for you (from
%s), but
you may need to enable firewall access for this script first.
I will start the download in %d seconds.
@ -154,7 +118,7 @@ I will start the download in %d seconds.
and place it in this directory before rerunning this script.)
---------------------------------------------------------------------------""",
min_version, download_base, delay, url
version, download_base, delay, url
); from time import sleep; sleep(delay)
log.warn("Downloading %s", url)
src = urllib2.urlopen(url)
@ -167,26 +131,81 @@ and place it in this directory before rerunning this script.)
if dst: dst.close()
return os.path.realpath(saveto)
def main(argv, version=DEFAULT_VERSION):
"""Install or upgrade setuptools and EasyInstall"""
if setuptools_is_new_enough(version):
if argv:
from setuptools.command.easy_install import main
main(argv)
else:
print "Setuptools version",version,"or greater has been installed."
print '(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)'
else:
try:
import setuptools
except ImportError:
egg = None
try:
egg = download_setuptools(version, min_version=version, delay=0)
egg = download_setuptools(version, delay=0)
sys.path.insert(0,egg)
from setuptools.command.easy_install import main
return main(list(argv)+[egg]) # we're done here
finally:
if egg and os.path.exists(egg):
os.unlink(egg)
else:
if setuptools.__version__ == '0.0.1':
print >>sys.stderr, (
"You have an obsolete version of setuptools installed. Please\n"
"remove it from your system entirely before rerunning this script."
)
sys.exit(2)
req = "setuptools>="+version
import pkg_resources
try:
pkg_resources.require(req)
except pkg_resources.VersionConflict:
try:
from setuptools.command.easy_install import main
except ImportError:
from easy_install import main
main(list(argv)+[download_setuptools(delay=0)])
sys.exit(0) # try to force an exit
else:
if argv:
from setuptools.command.easy_install import main
main(argv)
else:
print "Setuptools version",version,"or greater has been installed."
print '(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)'
def update_md5(filenames):
"""Update our built-in md5 registry"""
@ -220,8 +239,12 @@ def update_md5(filenames):
if __name__=='__main__':
if '--md5update' in sys.argv:
sys.argv.remove('--md5update')
update_md5(sys.argv[1:])
if len(sys.argv)>2 and sys.argv[1]=='--md5update':
update_md5(sys.argv[2:])
else:
main(sys.argv[1:])