Dear zooko, Thanks for the patches. The way you implemented automatic finding of dependencies is a really clever idea. I've created a bzr branch for it at http://code.launchpad.net/~astraw/stdeb/autofind-depends where I've been getting it shape for the mainline. This will probably continue with some more extensive testing on my end over the coming days and then I anticipate merging it. The new branch passes my (way too small) test suite (test.sh which is next to setup.py). If you have any use cases you could stick in test.sh, that would help me make sure I don't break anything for you. I'm initially going to make the auto-dependency finding optional with a default to off, but I'll spend some time with various projects around here to see how it goes... (I've also hacked down some of your lines closer to 80 characters wide -- you must have a wide monitor!) Anyhow, thanks for the patch... -Andrew zooko wrote:

Folks:

Thanks for stdeb! I'm using stdeb to produce debian packages for a few Python projects -- zfec [1], pycryptopp [2], pyutil [3], and argparse [4]. It works nicely.

I intend to use it in the future to produce debian packages for allmydata.org Tahoe, the Least-Authority Filesystem [5].

Along the way I added this feature to stdeb: use apt-file to discover which debian package(s) provide $DISTNAME.egg-info of the required version number, and automatically produce debian metadata showing that the new debian package depends on those debian packages. For this to work requires that you have the "apt-file" command available and that you have run "apt-file update" in order to acquire the apt-file database. Please see the patch for details.

With this patch, there is no "manual intervention" required to produce a good Debian package from a good Python package (for these five projects that I'm using it on). I just run stdeb then run the debian build-package command and then I'm done. We are going to script our buildbot to automatically do this whenever a new patch is committed to revision control and the unit tests pass.

This is really cool! Stdeb is almost mature enough that every well-packaged Python package can automatically be converted into a well-packaged Debian package!

I also ported stdeb to Python 2.4, set zip_ok=False so that it could install on Ubuntu dapper, and made one tiny clean-up that was suggested by lintian. The patch is appended.

Thanks!

Regards,

Zooko

[1] http://allmydata.org/trac/zfec [2] http://allmydata.org/trac/pycryptopp [3] http://allmydata.org/trac/pyutil [4] http://argparse.python-hosting.com/ [5] http://allmydata.org

Fri Jun 27 11:38:23 MST 2008 zooko@zooko.com * remove print statements used for debugging

Thu Jun 12 10:41:50 MST 2008 zooko@zooko.com * include an implementation of check_call so that this will work with Python 2.4

Thu Jun 12 10:40:36 MST 2008 zooko@zooko.com * setup.cfg: zip_ok = False Zipping your eggs causes various problems. I have seen about four or five such problems. I just now added one to the list -- installing stdeb with "./setup.py install" when there is already a version of stdeb installed fails on Ubuntu dapper (setuptool s-0.6a9) unless you set zip_ok = False.

Tue May 27 11:16:05 MST 2008 zooko@zooko.com * automatically produce Debian "Depends:" metadata from setuptools "install_requires" metadata

Wed May 21 15:49:10 MST 2008 zooko@zooko.com * don't build-depend on "-1" of python-setuptools

lintian says that it is a bad idea to depend on "-1" versions.

Thu May 15 16:03:04 MST 2008 zooko@zooko.com * more details in exception message

diff -u -r --exclude=_darcs dw/setup.cfg autodeps/setup.cfg --- dw/setup.cfg 2008-05-15 15:31:42.000000000 -0700 +++ autodeps/setup.cfg 2008-06-27 11:35:40.000000000 -0700 @@ -1,3 +1,6 @@ [egg_info] tag_build = .dev tag_svn_revision = 1 + +[easy_install] +zip_ok = False diff -u -r --exclude=_darcs dw/setup.py autodeps/setup.py --- dw/setup.py 2008-05-15 15:32:13.000000000 -0700 +++ autodeps/setup.py 2008-06-27 11:39:26.000000000 -0700 @@ -1,5 +1,3 @@ -#!/usr/bin/env python - import setuptools from setuptools import setup

diff -u -r --exclude=_darcs dw/stdeb/command/sdist_dsc.py autodeps/stdeb/command/sdist_dsc.py --- dw/stdeb/command/sdist_dsc.py 2008-05-21 06:33:07.000000000 -0700 +++ autodeps/stdeb/command/sdist_dsc.py 2008-06-27 11:35:40.000000000 -0700 @@ -80,6 +80,10 @@ if self.extra_cfg_file is not None: cfg_files.append(self.extra_cfg_file)

+ try: + install_requires = open(os.path.join(egg_info_dirname,'requires.txt'),'rU').read() + except EnvironmentError: + install_requires = () debinfo = DebianInfo( cfg_files=cfg_files, module_name = module_name, @@ -93,6 +97,8 @@ long_description = self.distribution.get_long_description(), patch_file = self.patch_file, patch_level = self.patch_level, + install_requires = install_requires, + setup_requires = (), # XXX How do we get the setup_requires? ) if debinfo.patch_file != '' and self.patch_already_applied: raise RuntimeError('A patch was already applied, but another ' diff -u -r --exclude=_darcs dw/stdeb/util.py autodeps/stdeb/util.py --- dw/stdeb/util.py 2008-05-21 06:33:07.000000000 -0700 +++ autodeps/stdeb/util.py 2008-06-27 11:39:00.000000000 -0700 @@ -1,11 +1,12 @@ # # This module contains most of the code of stdeb. # -import sys, os, shutil, sets, select +import re, sys, os, shutil, sets, select import ConfigParser import subprocess import tempfile import stdeb +import pkg_resources from stdeb import log, __version__ as __stdeb_version__

__all__ = ['DebianInfo','build_dsc','expand_tarball','expand_zip', @@ -13,6 +14,15 @@ 'apply_patch','repack_tarball_with_debianized_dirname', 'expand_sdist_file']

+import exceptions +class CalledProcessError(exceptions.Exception): pass + +def check_call(*popenargs, **kwargs): + retcode = subprocess.call(*popenargs, **kwargs) + if retcode == 0: + return + raise CalledProcessError(retcode) + stdeb_cmdline_opts = [ ('dist-dir=', 'd', "directory to put final built distributions in (default='deb_dist')"), @@ -48,7 +58,7 @@ def process_command(args, cwd=None): if not isinstance(args, (list, tuple)): raise RuntimeError, "args passed must be in a list" - subprocess.check_call(args, cwd=cwd) + check_call(args, cwd=cwd)

def recursive_hardlink(src,dst): dst = os.path.abspath(dst) @@ -111,6 +121,80 @@ result = cmd.stdout.read().strip() return result

+def get_deb_depends_from_setuptools_requires(requirements): + depends = [] # This will be the return value from this function. + + requirements = list(pkg_resources.parse_requirements(requirements)) + if not requirements: + return depends + + # Ask apt-file for any packages which have a .egg-info file by these names. + # Note that apt-file appears to think that some packages e.g. setuptools itself have "foo.egg-info/BLAH" files but not a "foo.egg-info" directory. + + egginfore="((%s)(?:-[^/]+)?(?:-py[0-9]\.[0-9.]+)?\.egg-info)" % '|'.join(req.project_name for req in requirements) + + args = ["apt-file", "search", "--ignore-case", "--regexp", egginfore] + try: + cmd = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True) + except Exception, le: + log.error('ERROR running: %s', ' '.join(args)) + raise RuntimeError('exception %s from subprocess %s' % (le,args)) + returncode = cmd.wait() + if returncode: + log.error('ERROR running: %s', ' '.join(args)) + raise RuntimeError('returncode %d from subprocess %s' % (returncode, args)) + + inlines = cmd.stdout.readlines() + + dd = {} # {pydistname: {pydist: set(debpackagename)}} + E=re.compile(egginfore, re.I) + D=re.compile("^([^:]*):", re.I) + eggsndebs = set() + for l in inlines: + if l: + emo = E.search(l) + assert emo, l + dmo = D.search(l) + assert dmo, l + eggsndebs.add((emo.group(1), dmo.group(1))) + + for (egginfo, debname) in eggsndebs: + pydist = pkg_resources.Distribution.from_filename(egginfo) + try: + dd.setdefault(pydist.project_name.lower(), {}).setdefault(pydist, set()).add(debname) + except ValueError, le: + log.warn("I got an error parsing a .egg-info file named \"%s\" from Debian package \"%s\" as a pkg_resources Distribution: %s" % (egginfo, debname, le,)) + pass + + # Now for each requirement, see if a Debian package satisfies it. + ops = {'<':'<<','>':'>>','==':'=','<=':'<=','>=':'>='} + for req in requirements: + reqname = req.project_name.lower() + gooddebs = set() + for pydist, debs in dd.get(reqname, {}).iteritems(): + if pydist in req: + # log.info("I found Debian packages \"%s\" which provides Python package \"%s\", version \"%s\", which satisfies our version requirements: \"%s\"" % (', '.join(debs), req.project_name, ver, req)) + gooddebs |= (debs) + else: + log.info("I found Debian packages \"%s\" which provides Python package \"%s\", version \"%s\", which does not satisfy our version requirements: \"%s\" -- ignoring." % (', '.join(debs), req.project_name, ver, req)) + if not gooddebs: + log.warn("I found no Debian package which provides the required Python package \"%s\" with version requirements \"%s\". Guessing blindly that the name \"python-%s\" will be it, and that the Python package version number requirements will apply to the Debian package." % (req.project_name, req.specs, reqname)) + gooddebs.add("python-" + reqname) + elif len(gooddebs) == 1: + log.info("I found a Debian package which provides the require Python package. Python package: \"%s\", Debian package: \"%s\"; adding Depends specifications for the following version(s): \"%s\"" % (req.project_name, tuple(gooddebs)[0], req.specs)) + else: + log.warn("I found multiple Debian packages which provide the Python distribution required. I'm listing them all as alternates. Candidate debs which claim to provide the Python package \"%s\" are: \"%s\"" % (req.project_name, ', '.join(gooddebs),)) + + alts = [] + for deb in gooddebs: + for spec in req.specs: + # Here we blithely assume that the Debian package versions are enough like the Python package versions that the requirement can be ported straight over... + alts.append("%s (%s %s)" % (deb, ops[spec[0]], spec[1])) + + depends.append(' | '.join(alts)) + + return depends + def make_tarball(tarball_fname,directory,cwd=None): "create a tarball from a directory" if tarball_fname.endswith('.gz'): opts = 'czf' @@ -278,6 +362,8 @@ long_description=NotGiven, patch_file=None, patch_level=None, + install_requires=None, + setup_requires=None, ): if cfg_files is NotGiven: raise ValueError("cfg_files must be supplied") if module_name is NotGiven: raise ValueError("module_name must be supplied") @@ -337,7 +423,9 @@ self.pycentral_showversions=current

- build_deps = ['python-setuptools (>= 0.6b3-1)'] + build_deps = ['python-setuptools (>= 0.6b3)'] + build_deps.extend(get_deb_depends_from_setuptools_requires(setup_requires))

+ depends = []

depends.append('${python:Depends}') @@ -386,6 +474,7 @@ self.copy_files_lines += '\n\tcp %s %s'%(mime_desktop_file,dest_file)

depends.extend(parse_vals(cfg,module_name,'Depends') ) + depends.extend(get_deb_depends_from_setuptools_requires(install_requires))

self.depends = ', '.join(depends)

self.description = description

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