Distutils-SIG April 2007

distutils-sig@python.org

27 participants
45 discussions

by Timothy Docker

Hi all, I've been aware that the distutils sig has been simmerring away, but until recently it has not been directly relevant to what I do. I like the look of the proposed api, but have one question. Will this support an installed system that has multiple versions of the same package installed simultaneously? If not, then this would seem to be a significant limitation, especially when dependencies between packages are considered. Assuming it does, then how will this be achieved? I am presently managing this with a messy arrangement of symlinks. A package is installed with its version number in it's name, and a separate directory is created for an application with links from the unversioned package name to the versioned one. Then I just set the pythonpath to this directory. A sample of what the directory looks like is shown below. I'm sure there is a better solution that this, and I'm not sure that this would work under windows anyway (does windows have symlinks?). So, has this SIG considered such versioning issues yet? Cheers, Tim -------------------------------------------------------------- Tim Docker timd(a)macquarie.com.au Quantative Applications Division Macquarie Bank -------------------------------------------------------------- qad16:qad $ ls -l lib/python/ total 110 drwxr-xr-x 2 mts mts 512 Nov 11 11:23 1.1 -r--r----- 1 root mts 45172 Sep 1 1998 cdrmodule_0_7_1.so drwxr-xr-x 2 mts mts 512 Sep 1 1998 chart_1_1 drwxr-xr-x 3 mts mts 512 Sep 1 1998 Fnorb_0_7_1 dr-xr-x--- 3 mts mts 512 Nov 11 11:21 Fnorb_0_8 drwxr-xr-x 3 mts mts 1536 Mar 3 12:45 mts_1_1 dr-xr-x--- 7 mts mts 512 Nov 11 11:22 OpenGL_1_5_1 dr-xr-x--- 2 mts mts 1024 Nov 11 11:23 PIL_0_3 drwxr-xr-x 3 mts mts 512 Sep 1 1998 Pmw_0_7 dr-xr-x--- 2 mts mts 512 Nov 11 11:21 v3d_1_1 qad16:qad $ ls -l lib/python/1.1 total 30 lrwxrwxrwx 1 root other 29 Apr 10 10:43 _glumodule.so -> ../OpenGL_1_5_1/_glumodule.so lrwxrwxrwx 1 root other 30 Apr 10 10:43 _glutmodule.so -> ../OpenGL_1_5_1/_glutmodule.so lrwxrwxrwx 1 root other 22 Apr 10 10:43 _imaging.so -> ../PIL_0_3/_imaging.so lrwxrwxrwx 1 root other 36 Apr 10 10:43 _opengl_nummodule.so -> ../OpenGL_1_5_1/_opengl_nummodule.so lrwxrwxrwx 1 root other 27 Apr 10 10:43 _tkinter.so -> ../OpenGL_1_5_1/_tkinter.so lrwxrwxrwx 1 mts mts 21 Apr 10 10:43 cdrmodule.so -> ../cdrmodule_0_7_1.so lrwxrwxrwx 1 mts mts 12 Apr 10 10:43 chart -> ../chart_1_1 lrwxrwxrwx 1 root other 12 Apr 10 10:43 Fnorb -> ../Fnorb_0_8 lrwxrwxrwx 1 mts mts 12 Apr 10 10:43 mts -> ../mts_1_1 lrwxrwxrwx 1 root other 15 Apr 10 10:43 OpenGL -> ../OpenGL_1_5_1 lrwxrwxrwx 1 root other 33 Apr 10 10:43 opengltrmodule.so -> ../OpenGL_1_5_1/opengltrmodule.so lrwxrwxrwx 1 root other 33 Apr 10 10:43 openglutil_num.so -> ../OpenGL_1_5_1/openglutil_num.so lrwxrwxrwx 1 root other 10 Apr 10 10:43 PIL -> ../PIL_0_3 lrwxrwxrwx 1 mts mts 10 Apr 10 10:43 Pmw -> ../Pmw_0_7 lrwxrwxrwx 1 root other 10 Apr 10 10:43 v3d -> ../v3d_1_1

2 years, 10 months

[Distutils-sig] distutils charter and interscript

by John Skaller

2 years, 10 months

eggs and Python Unicode variants (UCS2, UCS4)

by Martijn Faassen

Hi there, In the lxml project (http://codespeak.net/lxml), we've just noticed the following problem with lxml eggs: you can easy_install an egg that won't work for your Python. This is because Python can be compiled with either 2 or 4 bytes unicode as its internal representation. Any egg that contains compiled C code that uses unicode such as lxml will run into trouble: if it's compiled with a 4 bytes unicode Python, it won't work on a 2 bytes unicode Python, and vice versa. This problem is fairly common in Linux. Many distributions such as Ubuntu and Fedora compile their python with 4 bytes unicode internal representation. If you compile a Python interpreter by hand it defaults to 2 bytes unicode, however. Hand-building a Python interpreter is done fairly commonly by Linux sysadmins for various reasons. It would therefore be very nice if it became possible to make eggs for the different unicode compilation options of Python. This configuration dimension is a real world issue for any binary Python module that does anything with unicode text.. In an earlier mail to this list: http://mail.python.org/pipermail/distutils-sig/2005-October/005222.html M.-A. Lemburg and Phillip Eby had the following discussion: [MAL] >>Please make sure that your eggs catch all possible >>Python binary build dimensions: >> >>* Python version >>* Python Unicode variant (UCS2, UCS4) >>* OS name >>* OS version >>* Platform architecture (e.g. 32-bit vs. 64-bit) [PJE] >As far as I know, all of this except the Unicode variant is captured in >distutils' get_platform(). And if it's not, it should be, since it >affects any other kind of bdist mechanism. I'm not sure whether this means this needs to be escalated from setuptools to the Python interpreter level itself. With this mail, I've done the job escalating this lxml problem to what appears to be the right place, though. :) Thanks, Martijn

11 years, 9 months

unicode bug in distutils

by Tarek Ziadé

Hello, I have created a setup.py file for distirbution and I bumped into a small bug when i tried to set my name in the contact field (Tarek Ziadé) Using string (utf8 file): setup( maintainer="Tarek Ziadé" ) leads to: File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/distutils/command/register.py", line 162, in send_metadata auth) File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/distutils/command/register.py", line 257, in post_to_server value = unicode(value).encode("utf-8") UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 10: ordinal not in range(128) Using unicode: setup( maintainer=u"Tarek Ziadé" ) leads to: File "/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/distutils/dist.py", line 1094, in write_pkg_file file.write('Author: %s\n' % self.get_contact() ) UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 18: ordinal not in range(128) I would propose a patch for this problem but i don't know what would be the best input (i guess unicode for names) Regards Tarek -- Tarek Ziadé | Association AfPy | www.afpy.org Blog FR | http://programmation-python.org Blog EN | http://tarekziade.wordpress.com/

11 years, 11 months

buildout, zc.recipe.testrunner and tests_require

by Nathan R. Yergler

I'm using zc,buildout to manage the development of a very simple web application. I'd like to have a simple test runner that runs my doctests, but have run into a slight problem. I'm using wsgi_intercept to aid in testing, but unfortunately wsgi_intercept isn't a proper Python package ("yet", according to Titus). So I have a package-i-fied version in my svn repository and in my buildout.cfg I specify: develop = . ./wsgi_intercept_ I initially was using the "interpreter" option to get a Python interpreter with my eggs on the path, and running "./bin/python setup.py test". That, however, required me to list wsgi_intercept as a package requirement, when I really want to list it as a testing requirement. Moving it to a testing requirement caused it's develop egg not to be on the PYTHONPATH, so setuptools tries to find it. Which it couldn't. I tried using zc.recipe.testbrowser, thinking that maybe it'd look at the tests_require for the target eggs, but no such luck. The testrunner also seems pretty promiscuous in looking for things to test (it tries to import my eggs directory and test them which predictably doesn't work), but that's another story. So... any suggestions on using zc.buildout along with testing dependencies (generally or with zc.recipe.testrunner)? Thanks, Nathan

13 years, 3 months

slow Python startup with a couple of easy_install-ed packages

by Thomas Heller

Well, easy_install makes it snap to install packages that I may or may not use. Nothing is easier than to 'easy_install something-recently-announced', even if I never will use it (after a preliminary look). Often I forget to uninstall the packages again, or promise to do that later. Disk space is cheap. However, I found that with the ~20 eggs that I have installed the startup time of the Python interpreter (Python2.5, WinXP, measured with 'timeit python -c ""') rises considerably - 2.5 times slower. This only occurs when the eggs are listed in the easy_install.pth file; if they are moved into a 'normal' pth file this slowdown does not occur, although I can still import the eggs fine. I assume the additional time is spent by setuptools looking up entry points or whatever? And that this additional processing is not needed for the eggs that do not provide entry points? Or are not *using* setuptools themselves? If this is true, wouldn't it be possible to skip the processing for those eggs? IMO this is a critical problem of easy_install... (Imaging how the installed and possibly never used eggs pile up). Thomas

13 years, 8 months

workingenv/setuptools compatibility

by Ian Bicking

Hi again. I mentioned this a long time ago, but I'd like to talk about it again: I'd really like to remove workingenv's monkeypatching of setuptools. There's still just two things: * Removing easy_install's check of site.py (easy_install.install_site_py). * Changing the way scripts are created (using python -S and then changing the path). An option I could put in distutils.cfg for changing script creation would work great (since workingenv installs its own distutils.cfg). Maybe something that points to a function, and that function is passed the normal script text and then modifies it. Or just wraps get_script_header's text (that's what I'm currently doing). For setuptools' site.py, it would be nice if I could put a bit of text in there that indicates that it does everything setuptools' site.py does (at least as much as I choose to do -- no finding the system site.py in my case). Maybe something like __setuptools_setup_version__ = '0.6c6', or 'setuptools_site_py_hash = "xxxxx"', where that's an md5 hash of the setuptools' site.py that it was based on. Or something. This would substantially reduce the amount of annoying hacks in workingenv. And the script stuff would be useful in zc.buildout as well. -- Ian Bicking | ianb(a)colorstudy.com | http://blog.ianbicking.org

13 years, 10 months

Declaring "already provided" modules

by Martin Aspeli

Hi guys, I have a particular problem which I think we'll see a lot more of going forward. Zope 3 is in the process of being eggified, and we have eggs in the cheesehop of things like zope.component 3.4.0a1. I use zc.buildout to configure a Zope instance (a zope 2.10 one, to be precise) which has the various zope.* packages in non-egg-format in $INSTANCE_HOME/lib/python/zope/*. Then I'm depending on a package which does this: install_requires=['setuptools', ''zope.component', 'zope.interface', 'zope.schema', ], The problem is that even though I know I have zope.component 3.3 from my Zope instance, setuptools/buildout doesn't know that and tries to resolve the dependency. It succeeds with Zope 3.4's zope.component, which then causes runtime conflicts and subtle problems all over the place. I think what I need is some way of saying "all of these dependencies are already resolved, don't try to get them as new eggs". Is that possible? Is there another way I can manage this? Martin

13 years, 10 months

Re: [Distutils] setuptools extras_require

by Phillip J. Eby

At 12:50 PM 4/26/2007 -0500, Kumar McMillan wrote: >On 2/9/07, Phillip J. Eby <pje(a)telecommunity.com> wrote: >>At 09:29 AM 2/9/2007 -0500, Tres Seaver wrote: >> > > Using "|" as a separator for ORing TurboGear's requirements might look >> > > something like this (ignoring version numbers for simplicity): >> > > >> > > install_requires = [ >> > > "SQLObject | SQLAlchemy", >> > > "Kid | Genshi", >> > > ], >> > > extras_require = { >> > > "fancy_tb": ["Paste"], >> > > } >> > >> >+1 for the pipe symbol: to my eye, it means "pick the first of these", >> >which is what you want. >> >>It's also implementable; the tuple concept isn't. Eggs' requirements get >>stored in text files, so there has to be a pure-text representation possible. > >[blast from the past] >I'd like to use ORed requirements in a setup file but I don't see what >version of setuptools this was introduced in. Does anyone know? No, because it hasn't been done yet. :) I merely said it was implementable (in principle). Note that any project using this format won't be compatible with 0.6 versions of setuptools and will cause them to fail installation with parsing errors, unless there is some way to keep the alternatives hidden from older parsers.

13 years, 10 months

Re: [Distutils] setuptools extras_require

by Matt Good

On Thu, 2006-12-14 at 07:15 +0100, Elvelind Grandin wrote: > Perhaps I wasn't totally clear. what I meant was something like this. > > extras_require = { > "default" : ["SQLObject==bugfix,>=0.7.1dev-r1860,<=0.7.99"], > "future" : ["Genshi>=0.3", "SQLAlchemy>=0.3"] > }, That may be ok for the example, but what happens if you add another extra "foo" for some optional feature. Installing "TurboGears[foo]" won't select either the "default" or "future" extras, so you don't really get all the requirements. >From a semantic perspective I think listing these as "extras" is odd. One of either SQLObject or SQLAlchemy is required for installation, so it's not just an "extra" feature. I think extras have been used for this as a workaround to setuptools not supporting ORed requirements, but I'd like to see that fixed. I tend to think in terms of Debian packages where stuff like SA or SO would be listed as "depends" meaning that they're strictly required, so in setuptools this would correspond to "install_requires". On the other hand I believe Paste is still an optional package used in TurboGears for stuff like the interactive traceback display, so it'd be a Debian "recommends", or setuptools "extras". Using "|" as a separator for ORing TurboGear's requirements might look something like this (ignoring version numbers for simplicity): install_requires = [ "SQLObject | SQLAlchemy", "Kid | Genshi", ], extras_require = { "fancy_tb": ["Paste"], } Setuptools would check if either SQLObject or SQLAlchemy was already installed, if not it'd try from left to right until it successfully installed one of the requirements. I suppose extras could still be used as aliases for something like the "future" requirements to make it easier for users to install this set of packages: extras_require = { "standard": ["Kid", "SQLObject"], "future": ["Genshi", "SQLAlchemy"], "fancy_tb": ["Paste"], } Alternatively tuples could be substituted to define ORed requirements like: install_requires = [ ("SQLObject", "SQLAlchemy"), ("Kid", "Genshi"), ] Comments? -- Matt Good > On 12/12/06, Matt Good <matt(a)matt-good.net> wrote: > > On Tue, 2006-12-12 at 16:32 +0100, Elvelind Grandin wrote: > > > Or use a magic extra name like "default" which is used if no other > > > extra is selected. > > > > This doesn't really address the full issue, since there may be several > > sets of alternative dependencies for different requirements. > > > > Following the TurboGears example it needs an ORM from "SQLObject or > > SQLAlchemy" and a template engine from "Kid or Genshi". So it'd need > > defaults for each, not just a single default. > > > > > On 12/11/06, Elvelind Grandin <elvelind(a)gmail.com> wrote: > > > > Not really > > > > > > > > extras_require = { > > > > 'PDF': ["ReportLab>=1.2", "RXP"], > > > > } > > > > extras_exclude = { > > > > 'PDF': ["Foo"], > > > > } > > > > > > > > might work. even if it's not that pretty. > > > > > > > > On 12/10/06, Phillip J. Eby <pje(a)telecommunity.com> wrote: > > > > > At 08:28 PM 12/10/2006 +0100, Elvelind Grandin wrote: > > > > > >Is there any way to exclude packages in extras_require as opposed to > > > > > >just include them. In Turbogears we have Sqlobject in by default. but > > > > > >if the extra "future" is used it should drop SO and install sqlalchemy > > > > > >instead. > > > > > > > > > > Not currently, no. Do you have any suggestions as to how this might be > > > > > spelled in the requirements API? > > > > > > > > > > > > > > > > > > > > > > -- > > > > cheers > > > > elvelind grandin > > > > > > > > > > > > > > > >

13 years, 10 months

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

Distutils-SIG April 2007