From: Zooko O'Whielacronx Date: Thu, 13 Sep 2007 01:57:10 +0000 (-0700) Subject: use ez_setup.py to bootstrap setuptools X-Git-Tag: allmydata-tahoe-0.6.0~142 X-Git-Url: https://git.rkrishnan.org/components/%22news.html//%22?a=commitdiff_plain;h=a01ccc54c069e588ed880d5641b83594cba30611;p=tahoe-lafs%2Ftahoe-lafs.git use ez_setup.py to bootstrap setuptools --- diff --git a/ez_setup.py b/ez_setup.py new file mode 100644 index 00000000..94d26b64 --- /dev/null +++ b/ez_setup.py @@ -0,0 +1,207 @@ +#!/usr/bin/env python +"""Bootstrap setuptools installation + +If you want to use setuptools in your package's setup.py, just include this +file in the same directory with it, and add this to the top of your setup.py:: + + from ez_setup import use_setuptools + use_setuptools() + +If you want to require a specific version of setuptools, set a download +mirror, or use an alternate download directory, you can do so by supplying +the appropriate options to ``use_setuptools()``. + +This file can also be run as a script to install or upgrade setuptools. +""" +import sys + +DEFAULT_VERSION = "0.6c7" +DEFAULT_URL = "http://pypi.python.org/packages/%s/s/setuptools/" % sys.version[:3] + +md5_data = { + 'setuptools-0.6c7-py2.3.egg': '209fdf9adc3a615e5115b725658e13e2', + 'setuptools-0.6c7-py2.4.egg': '5a8f954807d46a0fb67cf1f26c55a82e', + 'setuptools-0.6c7-py2.5.egg': '45d2ad28f9750e7434111fde831e8372', +} + +import sys, os + +def _validate_md5(egg_name, data): + if egg_name in md5_data: + from md5 import md5 + digest = md5(data).hexdigest() + if digest != md5_data[egg_name]: + print >>sys.stderr, ( + "md5 validation of %s failed! (Possible download problem?)" + % egg_name + ) + sys.exit(2) + return data + + +def use_setuptools( + version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir, min_version=None +): + """Automatically find/download setuptools and make it available on sys.path + + `version` should be a valid setuptools version number that is available + as an egg for download under the `download_base` URL (which should end with + a '/'). `to_dir` is the directory where setuptools will be downloaded, if + it is not already available. If an older version of setuptools is installed, + this routine will print a message to ``sys.stderr`` and raise SystemExit in + an attempt to abort the calling script. + """ + try: + import setuptools + 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) + except ImportError: + egg = download_setuptools(version, download_base, to_dir) + sys.path.insert(0, egg) + import setuptools; setuptools.bootstrap_install_from = egg + + import pkg_resources + try: + if not min_version: + min_version = version + pkg_resources.require("setuptools>="+min_version) + + except pkg_resources.VersionConflict, e: + # XXX could we install in a subprocess here? + 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.\n\n(Currently using %r)" + ) % (min_version, e.args[0]) + sys.exit(2) + +def download_setuptools( + version=DEFAULT_VERSION, download_base=DEFAULT_URL, to_dir=os.curdir +): + """Download setuptools from a specified location and return its filename + + `version` should be a valid setuptools version number that is available + as an egg for download under the `download_base` URL (which should end + with a '/'). `to_dir` is the directory where the egg will be downloaded. + """ + import urllib2, shutil + egg_name = "setuptools-%s-py%s.egg" % (version,sys.version[:3]) + url = download_base + egg_name + saveto = os.path.join(to_dir, egg_name) + src = dst = None + if not os.path.exists(saveto): # Avoid repeated downloads + try: + from distutils import log + if True: + log.warn(""" +--------------------------------------------------------------------------- +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. + +(Note: if this machine does not have network access, please obtain the file + + %s + +and place it in this directory before rerunning this script.) +---------------------------------------------------------------------------""", + version, download_base, url + ); + log.warn("Downloading %s", url) + src = urllib2.urlopen(url) + # Read/write all in one block, so we don't create a corrupt file + # if the download is interrupted. + data = _validate_md5(egg_name, src.read()) + dst = open(saveto,"wb"); dst.write(data) + finally: + if src: src.close() + if dst: dst.close() + return os.path.realpath(saveto) + +def main(argv, version=DEFAULT_VERSION): + """Install or upgrade setuptools and EasyInstall""" + + try: + import setuptools + except ImportError: + egg = None + try: + egg = download_setuptools(version) + 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': + # tell the user to uninstall obsolete version + use_setuptools(version) + + 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()]) + 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""" + + import re + from md5 import md5 + + for name in filenames: + base = os.path.basename(name) + f = open(name,'rb') + md5_data[base] = md5(f.read()).hexdigest() + f.close() + + data = [" %r: %r,\n" % it for it in md5_data.items()] + data.sort() + repl = "".join(data) + + import inspect + srcfile = inspect.getsourcefile(sys.modules[__name__]) + f = open(srcfile, 'rb'); src = f.read(); f.close() + + match = re.search("\nmd5_data = {\n([^}]+)}", src) + if not match: + print >>sys.stderr, "Internal error!" + sys.exit(2) + + src = src[:match.start(1)] + repl + src[match.end(1):] + f = open(srcfile,'w') + f.write(src) + f.close() + + +if __name__=='__main__': + if len(sys.argv)>2 and sys.argv[1]=='--md5update': + update_md5(sys.argv[2:]) + else: + main(sys.argv[1:]) + + + + + diff --git a/setup.py b/setup.py index 078fd5fd..4200d68a 100644 --- a/setup.py +++ b/setup.py @@ -20,8 +20,15 @@ # Inc., please contact partnerships@allmydata.com and visit # http://allmydata.com/. -import re, os.path +from ez_setup import use_setuptools +import sys +if 'cygwin' in sys.platform.lower(): + min_version='0.6c6' +else: + min_version='0.6a9' +use_setuptools(min_version=min_version) from setuptools import Extension, setup +import re, os.path trove_classifiers=[ "Development Status :: 3 - Alpha",