Mailman 3 August 2008 - Distutils-SIG

Re: [Distutils] wishlist for setuptools
by Phillip J. Eby 10 Aug '08

10 Aug '08

At 08:19 AM 8/10/2008 -0500, Christopher Dunn wrote: >In a nutshell, here is what I want to be able to do: > * Download several Python eggs into a directory, including > multiple versions of some eggs. > * Add that directory to sys.path at runtime. > * Use pkg_resources.require() to select versions of the eggs. > * 'import Foo' for each package "Foo". You can do all of the above now. Just use the -m option to easy_install when you eggs to the non-site directory, and make sure that you add the directory to sys.path *before* importing pkg_resources. Or, if you can't do that, do this: pkg_resources.working_set.add_entry(directory_just_added_to_sys_path) This will allow pkg_resources to find eggs in that directory when you use require(). >I hope that everyone takes this request seriously. The current >system is almost completely broken for me. The only way I can use >eggs is to add each one to sys.path explicitly at runtime. My guess is that you're probably importing pkg_resources before you add your egg directory to sys.path. If not, please post code to show what you're doing. You should be able to do exactly what you specified above, without any changes to setuptools or pkg_resources.

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wishlist for setuptools
by Christopher Dunn 10 Aug '08

10 Aug '08

In a nutshell, here is what I want to be able to do: 1. Download several Python eggs into a directory, including multiple versions of some eggs. 2. Add that directory to sys.path at runtime. 3. Use pkg_resources.require() to select versions of the eggs. 4. 'import Foo' for each package "Foo". Python Eggs are great, but I have a major problem with setuptools: Where I work, I am not allowed to alter PYTHONPATH or to install into site-packages. I can add paths to sys.path at runtime, but normally we load modules via sys.meta_path. We have a large database of modules by many different developers, and we have per-project configuration files which select versions of these modules to be accessible via sys.meta_path. I'd like to continue to select our own modules via the configuration files, but I'd like to load Eggs from PYPI via the procedure above. This may seem impossible, but I have a fairly simple solution: Put an Egg importer on sys.meta_path. I'll outline the solution: First, realize that no site.py or .pth files will be processed in this usage model. Second, when a version range is specified via pkg_resources.require(), register that specification into a global Egg importer (attached to the setuptools module). Also, append that importer to the end of sys.meta_path, if that has not already been done. This Egg importer should follow the protocol of PEP 302. Third, when a module registered as an Egg is imported, Python will first look for an importer on sys.meta_path. If not intercepted by another meta_path importer, eventually our new Egg importer will be tried. The Egg importer should search for the Egg by scanning sys.path, in order. It should look not only for Eggs, but also for directories which might contain Eggs. It should accept the first Egg discovered which matches the registered criteria and load it. Otherwise, it should throw an ImportError exception. Some things to note about this approach: 1. sys.path_hooks is ignored. This is because the call to require() implied a change in import semantics. 2. If an egg is not registered via 'require', then the Egg importer on sys.meta_path will not look for it, but the egg can still be loaded if it was 'easy_installed' and if the site.py and .pth files were properly read. In other words, we have complete backward-compatibility. 3. If an appropriate egg cannot be found, the ImportError is raised at 'import' time, not when 'require()' is called. For this reason, we may need a different 'require' function, maybe 'eggs.require()'. Or, sys.path could be scanned inside 'require()'. 4. We have eliminated the O(n^2) look-up cost of a large number of eggs listed on sys.path directly. In fact, we don't have to put any eggs on sys.path, but if we do, they will take precedence over later eggs or directories containing eggs, as a user would expect. I hope that everyone takes this request seriously. The current system is almost completely broken for me. The only way I can use eggs is to add each one to sys.path explicitly at runtime. That's a huge PITA and a big maintenance problem. I'm very disappointed by the whole PYPI system at the moment. Something that could be extremely easy is instead very difficult.

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Problem using ETSProjectTools rpms
by Stanley A. Klein 08 Aug '08

08 Aug '08

I downloaded ETSProjectTools and used "python setup.py bdist_rpm" to build the rpms. I did this on both Fedora 7 and Centos 5.2. In both cases I had the rpm for python-configobj installed. I don't know why, but during the builds the setup went out to the net to find configobj. It found it (although I don't know what it did with it) and the builds completed properly. (The setup.cfg had the proper statements in it for doing bdist_rpm and putting files in the right places, including docs.) However, after I installed (using rpm) and went to run ets, I got a traceback complaining about not being able to find configobj. I was able to fix it by going into the egg-info directory and editing requires.txt to comment out configobj. I don't know if this is a problem in the ETS setup.py or the distutils/setuptools, but there ought to be a way to fix it without having to hack the files in the egg-info directory. Either whatever is doing the "requires" function ought to be able to see that configobj.py was sitting right there in site-packages or there ought to be a way to tell the setup.py call to ignore the "requires" functionality for configobj. Stan Klein

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setuptools acting differently in different shell environments
by Chris Maddison 06 Aug '08

06 Aug '08

Hello Phillip J. Eby, I am having trouble setting up an installer package on Mac OS 10.5 that installs setuptools and nose testing for Python 2.5. The installer .pkg drops the payload as a temporary file with the distributions and runs short postinstall script to do the installation of the packages. The scripts I have running are fairly simple: #!/bin/sh cd $2nose_installer_temp sh setuptools-0.6c8-py2.5.egg easy_install -v nose exit 0 When I run the equivalent script as an executable outside of the Installer it works great: /Users/chris/Documents/PyGraphics/Installer/Nose/resources/ postinstall ; exit; Corbie:~ chris$ /Users/chris/Documents/PyGraphics/Installer/Nose/ resources/postinstall ; exit; Processing setuptools-0.6c8-py2.5.egg Removing /Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/site-packages/setuptools-0.6c8-py2.5.egg Copying setuptools-0.6c8-py2.5.egg to /Library/Frameworks/ Python.framework/Versions/2.5/lib/python2.5/site-packages setuptools 0.6c8 is already the active version in easy-install.pth Installing easy_install script to /Library/Frameworks/ Python.framework/Versions/2.5/bin Installing easy_install-2.5 script to /Library/Frameworks/ Python.framework/Versions/2.5/bin Installed /Library/Frameworks/Python.framework/Versions/2.5/lib/ python2.5/site-packages/setuptools-0.6c8-py2.5.egg Processing dependencies for setuptools==0.6c8 Finished processing dependencies for setuptools==0.6c8 Searching for nose Best match: nose 0.10.3 Processing nose-0.10.3-py2.5.egg nose 0.10.3 is already the active version in easy-install.pth Installing nosetests script to /Library/Frameworks/Python.framework/ Versions/2.5/bin changing mode of /Library/Frameworks/Python.framework/Versions/2.5/ bin/nosetests to 755 Using /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/ site-packages/nose-0.10.3-py2.5.egg Processing dependencies for nose Finished processing dependencies for nose Note that this method has the correct default install location. /Library/Frameworks/Python.framework/Versions/2.5/bin for scripts and / Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site- packages for the modules. When the SAME script is run as part of the installer package I get: error: can't create or remove files in install directory The following error occurred while trying to add or remove files in the installation directory: [Errno 2] No such file or directory: '/Library/Python/2.5/site- packages/test-easy-install-4156.write-test' The installation directory you specified (via --install-dir, -- prefix, or the distutils default setting) was: /Library/Python/2.5/site-packages/ 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). It seems like a different default directory is being used and I can't figure out why or how to change that. On top of that, when I try forcing it in various ways (including .cfg files) suggested in the setuptools documentation it says that those directories aren't in the python path as my $PYTHONPATH variable is ''. This is strange, because sys.path DOES come up with the correct paths. I tried fooling setuptools by assigning the directory to PYTHONPATH and calling the installer then. It manages to get things in the right place, but somehow fails to configure itself properly and throws the following error: Corbie:~ chris$ easy_install nose Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/Current/bin/ easy_install", line 5, in <module> from pkg_resources import load_entry_point File "/System/Library/Frameworks/Python.framework/Versions/2.5/ Extras/lib/python/pkg_resources.py", line 2559, in <module> parse_requirements(__requires__), Environment() File "/System/Library/Frameworks/Python.framework/Versions/2.5/ Extras/lib/python/pkg_resources.py", line 518, in resolve raise DistributionNotFound(req) # XXX put more info here pkg_resources.DistributionNotFound: setuptools==0.6c8 I don't understand why Is there some quirk of shells that I don't understand, does have it have something to do with different environment variables? Is there something in the behaviour of setuptools.egg that can explain this? Can you think of a way around it? Sorry for the massive email! and thanks! Chris Maddison

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Re: [Distutils] Bug in setuptools version parsing when appending '.dev'?
by Phillip J. Eby 06 Aug '08

06 Aug '08

At 01:41 PM 8/4/2008 -0400, Alexander Michael wrote: >Again, attempting to offer up practical solutions. Edit the >setup.cfg's to drop the dev option in the release branches and update >the trunk to the next version (i.e. 3.1.dev-rXXXXX)? That way, >checkouts of the release branches will be 3.0-rXXXXX (a post release >of 3) and the trunk will be a post of a pre-release that is newer than >anything else in the repository. Just a thought... This is basically what I do, except I don't bother having release branches or tags, and instead of editing the setup.cfg, I just use my "release" alias (which maps to 'egg_info -RDb""'). So, when I did two back-to-back releases of BytecodeAssembler today (due to finding a bug after the first release), my command sequence was: # start: version in setup.py is 0.4, release on Pypi is 0.3 # do development of version 0.4 w/periodic checkins setup.py wikiup # upload wiki pages setup.py release sdist bdist_egg upload # ... edit version number from 0.4 to 0.5 and check in # ... find bug, fix it, check it in setup.py wikiup # upload wiki pages setup.py release sdist bdist_egg upload # ... edit version number from 0.5 to 0.6 and check in # end: version in setup.py is 0.6, release on Pypi is 0.5 Of course, a more robust procedure would probably be to use x.1 versions (e.g. 0.4.1 instead of 0.5), and then bump to the next non-bugfix version number when development begins on the next release. If you have release branches, then I guess you'd do the bugfix bump on the branch, and a non-bugfix increment on the trunk.

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Bug in setuptools version parsing when appending '.dev'?
by Dave Peterson 06 Aug '08

06 Aug '08

Am I missing something or is the following a bug whereby adding the '.dev' tag is doing something weird? >>> from pkg_resources import parse_requirement as pv >>> pv('1.0a1.dev') < pv('1.0a1') True >>> pv('1.0a1') < pv('1.0') True >>> pv('1.0a1.dev') < pv('1.0.dev') False >>> pv('1.0a1') < pv('1.0.dev') False >>> import setuptools >>> setuptools.__version__ '0.6c8' This is mainly causing us problems when projects try to track alpha and beta level bumps in dependencies, such as when project Foo requires project Bar version 3.0b1 via a requirement like 'Bar >= 3.0b1' (which means we don't want the development prereleases of Bar's first beta release, but anything after that should be okay.) But then when we actually want to release Bar 3.0 and change the version number to just '3.0', suddenly installs fail while we try to run the last set of tests because '3.0.dev' is older than '3.0b1'. If it is not a bug, how do you handle situations where you want to run that last round of testing prior to tagging and building releases? I'd rather do that AFTER making all source changes, and not have to change the version number after the testing. -- Dave

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Re: [Distutils] [ANN] EggFreezer
by Alberto Valverde 06 Aug '08

06 Aug '08

Mike Orr wrote: > Alberto, this is a wonderful idea. It may help with some issues I'm > currently facing, running Pylons on App Engine and in Py2exe, > distributing projects to assistant developers, and in training > sessions for new developers. > > My organization has developers on all three platforms (Linux, Windows, > and Mac), so we'd definitely be interested interested in all-platform > or cross-platform builds if they become feasable. > I've implemented "universal" installer support in latest release, 0.1.4. The support is limited however by setuptools limitation of not distinguish between different builds (UCS2 vs UCS4 on linux, fink vs mac ports, etc.. on macosx, etc) though this might be fixed in the future if someone more knowledgeable than me on this issues wants to lend a hand :) A sample universal installer for TurboGears2 which supports linux-i686, win32 and macosx-10.3-i386 (with the mentioned limitiations) is here: http://toscat.net/~alberto/AllTurboGears2-1.9.7a3dev-r5053-py2.5.py Alberto P.S: This cross-post replies are getting out of control. Since I'm the one who began all this madness by cross-posting the announcement, I should be one trying to stop it: Lets continue this thread in distutils-sig please, sorry about this.

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[issue31] [PATCH] Skip failing tests on Jython
by Philip Jenvey 05 Aug '08

05 Aug '08

New submission from Philip Jenvey <pjenvey(a)underboss.org>: (Extracted from #9) This patch disables failing tests on Jython. Per our last conversation on distutils-sig about the failing functionality -- it isn't actually being used, anyway ---------- assignedto: pje files: jython_failures-r65223.diff messages: 79 nosy: pje, pjenvey priority: bug status: unread title: [PATCH] Skip failing tests on Jython Added file: http://bugs.python.org/setuptools/file13/jython_failures-r65223.diff _______________________________________________ Setuptools tracker <setuptools(a)bugs.python.org> <http://bugs.python.org/setuptools/issue31> _______________________________________________

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A release to at least stop crashing on Subversion 1.5 would be nice
by Arlo Belshee 05 Aug '08

05 Aug '08

In command/sdist.py, line 90 refers to a global log function which does not exist. Thus, instead of logging a warning about not understanding Subversion, setuptools crashes. The default setup scripts for Pylons (and probably others) use svn revision tagging. Thus, the following causes a crash: easy_install Pylons paster create -t Pylons proj setup.py develop And, since the user hasn't done any config (or anything but follow a tutorial), he isn't able to easily figure out what went wrong. Also, since setuptools was likely installed automatically for him via the egg in the cheeseshop, he isn't aware of anything that may be in dev for setuptools. A new user's likely response is to get frustrated for 15 minutes, then move on to another web framework / language. Even if you don't provide svn 1.5 support, can you at least post an egg that won't crash in the presence of svn 1.5? Thanks. Arlo

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[issue30] [PATCH] ability to upload a pre-built egg to PyPi
by Dave Peterson 05 Aug '08

05 Aug '08

New submission from Dave Peterson <dpeterson(a)enthought.com>: It would be convenient to be able to upload pre-built eggs using the 'python setup.py upload' command as the owner/author of a project may not have machines available to cover the platforms for which pre-built binaries are desired. Having this feature would allow the project owner / maintainer to accept pre-built eggs from others in their project community and get them onto PyPi. I've put together and attached a patch that adds a new '--bdist-path' (or '-b') option to the upload command that allows calls like 'python setup.py upload -b dist/foo-1.0-py2.5-win32.egg' to work. The patch is actually for the distutils.command.upload module as I've found that in setuptools-0.6c8, even though there is a setuptools/command/upload module, it isn't used at all. I'm assuming this is because there isn't much difference between the setuptools and distutils versions of this command but that something was intended eventually. I'm making this a setuptools ticket because I'd like to see this improvement in setuptools :-) ---------- files: upload.py.patch messages: 77 nosy: dpeterson priority: feature status: unread title: [PATCH] ability to upload a pre-built egg to PyPi Added file: http://bugs.python.org/setuptools/file11/upload.py.patch _______________________________________________ Setuptools tracker <setuptools(a)bugs.python.org> <http://bugs.python.org/setuptools/issue30> _______________________________________________

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