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Title: Missing dependency in distutils build
Type: behavior Stage: resolved
Components: Distutils Versions: Python 3.3, Python 3.4, Python 2.7
Status: closed Resolution: out of date
Dependencies: Superseder:
Assigned To: eric.araujo Nosy List: alexis, anthonypjshaw, do3cc, dstufft, eric.araujo, ncoghlan, steve.dower, tarek
Priority: normal Keywords: patch

Created on 2009-02-13 09:57 by do3cc, last changed 2022-04-11 14:56 by admin. This issue is now closed.

File name Uploaded Description Edit
dependency.patch do3cc, 2009-02-13 09:57 A Patch to fix the bug do3cc, 2009-02-15 23:52 a rudimentary test case do3cc, 2009-02-23 19:23
Messages (14)
msg81892 - (view) Author: Patrick Gerken (do3cc) Date: 2009-02-13 09:57
When running the command install_lib, the command build_clib is not run.
If a package contains clibs they can be dependencies for extension libs,
at least that is stated in the module docstring of build_clib.

In real life you can see it when trying to run the command install_lib
on the current reportlab2.3.

The patch provided needs do be applied in the distutils dir directly with

patch dependency.patch

As requested, I asked on the mailing list first, whether this really is
a bug.

I am half finished writing a test case, that I'll append to this ticket
msg81894 - (view) Author: Tarek Ziadé (tarek) * (Python committer) Date: 2009-02-13 10:02
be careful to write your test in distutils (setuptools is not part of
msg82187 - (view) Author: Patrick Gerken (do3cc) Date: 2009-02-15 23:52
The attached test works breaks without the patch and passes with the patch.

I am not sure whether the test itself is written following best practice.
I would be more than happy for a review, with hints what should be done
msg82189 - (view) Author: Tarek Ziadé (tarek) * (Python committer) Date: 2009-02-16 00:00
The patch looks good.

Minor tweaks :

- sys.path should be set to its initial state after the test
(setUp/tearDown might be helpfull here)

- ensure_finalized() should be called right before run() 
  so it acts like the real call
msg82637 - (view) Author: Patrick Gerken (do3cc) Date: 2009-02-23 19:23
Thank you, tarek

The sys.path should have been obvious.
msg94078 - (view) Author: Tarek Ziadé (tarek) * (Python committer) Date: 2009-10-15 08:23
It looks like there's a missing part in the patch: get_outputs(), and
get_inputs() should also return files created in build()

Now something I don't understand is how reportlab distribution is doing
to copy the compiled extensions when "install" is called.

Could you point me please to the package so I can test that ?

Thanks !
msg94614 - (view) Author: Patrick Gerken (do3cc) Date: 2009-10-28 08:32
Hi Tarek,

I think clib stuff is installed in the right python directory and the 
ext install step then just finds them.

To reproduce the issue, run 
the "old" easy_install in a virtualenv.
easy_install ReportLab
It will then fail because of the missing library.

I can also show it during Plone Conference, just look for me in irc.


msg115784 - (view) Author: Éric Araujo (eric.araujo) * (Python committer) Date: 2010-09-07 15:55
Adding back distutils1. This is a bug, not a feature.
msg128497 - (view) Author: Alexis Metaireau (alexis) * (Python triager) Date: 2011-02-13 14:23
Has the patch been applied on distutils(1/2) ?
msg128510 - (view) Author: Éric Araujo (eric.araujo) * (Python committer) Date: 2011-02-13 15:41
If we haven’t closed it, it’s because it has not been.
msg138117 - (view) Author: Éric Araujo (eric.araujo) * (Python committer) Date: 2011-06-10 17:15
>> Now something I don't understand is how reportlab distribution is doing
>> to copy the compiled extensions when "install" is called.
> I think clib stuff is installed in the right python directory and the
> ext install step then just finds them.
Yep, the install* commands just copy all files from the build dir to the install dir.

The patch is straightforward and the test looks good.  However, I worry about backward compatibility.  For projects without C libs, this won’t change anything; for projects already having a workaround, what will happen?  While this is clearly a bug, I’m not sure fixing the existing behavior is okay in distutils.

For packaging (distutils2), I will commit this shortly.
msg138205 - (view) Author: Éric Araujo (eric.araujo) * (Python committer) Date: 2011-06-12 11:06
> for projects already having a workaround, what will happen?
I think I have the answer to my question: if build_clib is called twice, the registry in Distribution will know that it has run and won’t run it again.  I’ll test manually and if I confirm, I will commit this change.
msg341576 - (view) Author: anthony shaw (anthonypjshaw) * (Python triager) Date: 2019-05-06 17:44
This issue has been open for some time, looking at the install_lib in master, there have been no changes to call 'build_clib' so the issue documented here would still apply.
msg386291 - (view) Author: Steve Dower (steve.dower) * (Python committer) Date: 2021-02-03 18:11
Distutils is now deprecated (see PEP 632) and all tagged issues are being closed. From now until removal, only release blocking issues will be considered for distutils.

If this issue does not relate to distutils, please remove the component and reopen it. If you believe it still requires a fix, most likely the issue should be re-reported at
Date User Action Args
2022-04-11 14:56:45adminsetgithub: 49493
2021-02-03 18:11:00steve.dowersetstatus: open -> closed

nosy: + steve.dower
messages: + msg386291

resolution: out of date
stage: patch review -> resolved
2019-05-06 18:22:57anthonypjshawsetnosy: + ncoghlan, dstufft
2019-05-06 17:44:16anthonypjshawsetnosy: + anthonypjshaw
messages: + msg341576
2014-03-13 03:58:32eric.araujosetcomponents: - Distutils2
versions: + Python 3.4, - 3rd party, Python 3.2
2011-06-12 11:06:27eric.araujosetassignee: tarek -> eric.araujo
messages: + msg138205
2011-06-10 17:15:36eric.araujosetresolution: accepted -> (no value)
stage: patch review
messages: + msg138117
versions: + Python 3.3, - Python 3.1
2011-02-13 15:41:48eric.araujosetnosy: tarek, eric.araujo, do3cc, alexis
messages: + msg128510
2011-02-13 14:23:15alexissetnosy: + alexis
messages: + msg128497
2010-09-29 23:43:03eric.araujosetversions: + 3rd party
2010-09-07 15:55:53eric.araujosetmessages: + msg115784
2010-09-07 15:54:49eric.araujosetnosy: + eric.araujo

components: + Distutils
versions: - Python 2.6, Python 2.5, Python 3.0, Python 3.3
2010-04-20 15:44:24eric.araujosetcomponents: + Distutils2, - Distutils
versions: + Python 2.5, Python 3.1, Python 3.3
2009-10-28 08:32:59do3ccsetmessages: + msg94614
2009-10-15 08:23:20tareksetpriority: normal
resolution: accepted
messages: + msg94078

versions: + Python 3.0, Python 3.2, - Python 2.5, Python 2.4
2009-02-23 19:23:04do3ccsetfiles: +
messages: + msg82637
2009-02-16 00:00:26tareksetmessages: + msg82189
2009-02-15 23:52:16do3ccsetfiles: +
messages: + msg82187
2009-02-13 10:02:23tareksetmessages: + msg81894
2009-02-13 09:57:07do3cccreate