Bug 533022 - RFC: add /etc/rpm/macros.python to python-devel
Summary: RFC: add /etc/rpm/macros.python to python-devel
Alias: None
Product: Fedora
Classification: Fedora
Component: python
Version: 12
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Dave Malcolm
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2009-11-04 18:06 UTC by Dave Malcolm
Modified: 2010-12-04 03:30 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-12-04 03:30:29 UTC

Attachments (Terms of Use)
Patch to add the macros.python file (needs new source file and %changelog entry) (1.49 KB, patch)
2009-11-04 18:08 UTC, Dave Malcolm
no flags Details | Diff

Description Dave Malcolm 2009-11-04 18:06:55 UTC
To add a file /etc/rpm/macros.python to the python-devel subpackage, containing these macros: 
%python_sitelib %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")
%python_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(1))")

NB "__python" is defined in /usr/lib/rpm/macros as "/usr/bin/python"

This would avoid the need to define these macros in every specfile (assuming you had a recent enough python-devel).

I've tried doing something similar for python3-devel, see:

One drawback is that the macro files are read (with rpmInitMacros) and
expanded on every rpm operation, which means that when python-devel is
installed, every "rpm" invocation is going to be quietly invoking
/usr/bin/python twice on startup.  None of the existing macro files seem to
invoke subprocess during expansion.

Comment 1 Dave Malcolm 2009-11-04 18:08:41 UTC
Created attachment 367514 [details]
Patch to add the macros.python file (needs new source file and %changelog entry)

Comment 2 Dave Malcolm 2009-11-04 18:11:25 UTC
Another way to do this would be to pre-evaluate the values, and bake them in to the macro file.  That would avoid invoking /usr/bin/python twice, but would make them not change if __python was redefined.

Comment 3 James Antill 2009-11-04 18:50:09 UTC
 The python3 macro names should be %python3_sitelib and %python3_sitearch otherwise people are going to get screwed over as the value changes at different points in the specfile (depending on what __python points to). You shouldn't consider the specfile language a real programming language, IMO.
 So just pre-populating them should be fine.

Comment 4 Bug Zapper 2009-11-16 15:05:57 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

More information and reason for this action is here:

Comment 5 Dave Malcolm 2010-01-22 22:30:06 UTC
Panu: am I right in thinking that these macros are supplied now in F-13's rpm?

Comment 6 Bug Zapper 2010-11-04 06:48:19 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 12.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '12'.

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Comment 7 Bug Zapper 2010-12-04 03:30:29 UTC
Fedora 12 changed to end-of-life (EOL) status on 2010-12-02. Fedora 12 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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