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Bug 1757834 - %py_build uses --executable="%{__python2}
Summary: %py_build uses --executable="%{__python2}
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: python-rpm-macros
Version: 7.7
Hardware: Unspecified
OS: Unspecified
low
unspecified
Target Milestone: rc
: ---
Assignee: Charalampos Stratakis
QA Contact: Lukáš Zachar
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-10-02 14:17 UTC by Miro Hrončok
Modified: 2020-09-29 19:34 UTC (History)
5 users (show)

Fixed In Version: python-rpm-macros-3-33.el7
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-09-29 19:34:04 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:3881 0 None None None 2020-09-29 19:34:39 UTC

Description Miro Hrončok 2019-10-02 14:17:18 UTC 
Apparently, the %py_build macro should respect the global definition of %__python, however it hardcodes --executable="%{__python2} and hence it makes it impossible to do the following:

%global __python %__python3
...
%py_build

python-rpm-macros 3-32
Comment 2 Miro Hrončok 2019-10-02 14:18:06 UTC 
Fedora fix: https://src.fedoraproject.org/rpms/python-rpm-macros/c/90b0bf74804e4b20ce2bad9bd1ed61ff1f0d1e3d

RHEL 8 bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1757833
Comment 3 Tomas Orsava 2019-10-03 09:33:42 UTC 
Hm, a significant number of packages are using that macro, which makes me weary of changing it's definition. However, as %__python and %__python2 should be defined the same, it at least *should* be functionally the same. With plenty of testing we should be fine.
Comment 4 Miro Hrončok 2019-10-03 09:41:00 UTC 
This does not impact Python 2 packages. This only impacts Python 3 packages which define %__python to %__python3 AND use %py_build (not %py3_build). My educated guess that no RHEL 7 package does that.
Comment 5 Tomas Orsava 2019-10-03 11:47:19 UTC 
I see, thanks! More info in https://bugzilla.redhat.com/show_bug.cgi?id=1757833#c5
Comment 6 Petr Viktorin (pviktori) 2019-10-08 13:50:57 UTC 
Right, this shouldn't affect any RHEL7 packages. It might affect CentOS or EPEL packages, or customers' builds.
Comment 7 Petr Viktorin (pviktori) 2019-10-08 13:51:28 UTC 
But there's an easy workaround. I'm not sure it's worth fixing in RHEL7.
Comment 8 Miro Hrončok 2019-10-08 14:01:53 UTC 
What's the workaround?

We can override the macro in EPEL.
Comment 9 Petr Viktorin (pviktori) 2019-10-08 14:10:35 UTC 
Use %py3_build.
Comment 10 Miro Hrončok 2019-10-08 14:19:03 UTC 
Oh. The idea is to conditionally set %__python and have a simple specfile with no further %ifs.
Comment 11 Petr Viktorin (pviktori) 2019-10-22 13:40:32 UTC 
Overriding in EPEL sounds like a good choice. It seems the timing is not on our side.
Comment 12 Miro Hrončok 2019-10-22 13:50:09 UTC 
EPEL 7 workaround: https://src.fedoraproject.org/rpms/epel-rpm-macros/pull-request/9
Comment 13 Tomas Orsava 2019-10-22 14:42:09 UTC 
This issue was discovered too late to be fixed in RHEL 7.8. We're leaving it open for later consideration.
Comment 19 errata-xmlrpc 2020-09-29 19:34:04 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (python-rpm-macros bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:3881
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