Bug 1026469 - brp-python-bytecompile should ignore symlinks to files it cannot write
brp-python-bytecompile should ignore symlinks to files it cannot write
Product: Fedora
Classification: Fedora
Component: rpm (Show other bugs)
Unspecified Unspecified
unspecified Severity low
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Assigned To: packaging-team-maint
Fedora Extras Quality Assurance
Depends On:
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Reported: 2013-11-04 12:49 EST by Zbigniew Jędrzejewski-Szmek
Modified: 2015-07-01 09:22 EDT (History)
13 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-07-01 09:22:21 EDT
Type: Bug
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Description Zbigniew Jędrzejewski-Szmek 2013-11-04 12:49:04 EST
Description of problem:
calibre build run /usr/lib/rpm/brp-python-bytecompile. If python-feedparser (a runtime dependency, not a build time one) is *not* installed, everything works fine, becuase brp-python-bytecompile ignored dangling symlinks.

But if python-feedparser is installed, and the dynglings are not symlanked^W^W^W^W symlinks are dangling, it fails with:

+ /usr/lib/rpm/brp-python-bytecompile /usr/bin/python 1
Bytecompiling .py files below /home/zbyszek/rpmbuild/BUILDROOT/calibre-1.9.0-1.fc21.x86_64/usr/lib/python2.7/ using /usr/bin/python2.7
Sorry [Errno 13] Permission denied: '/home/zbyszek/rpmbuild/BUILDROOT/calibre-1.9.0-1.fc21.x86_64/usr/lib64/calibre/calibre/web/feeds/feedparser.pyc'
error: Bad exit status from /var/tmp/rpm-tmp.UBLMpQ (%install)

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. build calibre
2. install calibre
3. attempt to build again

I'm setting severity to low, because this won't happen in a pristine build environment and is easy enough to work around.

I think that this is really a bug in rpm-build, brp-python-bytecompile should ignore symlinks to files it cannot write. As we symlink to unbundle stuff, such things will happen more and more often. It *could* be worked-around in this srpm, but it won't be particularly easy or elegant, and it's much nicer to fix it in rpm-build.
Comment 1 Zbigniew Jędrzejewski-Szmek 2014-01-24 09:29:28 EST
Can brp-python-bytecompile ignore symlinks to files it cannot write?
Comment 2 Panu Matilainen 2014-01-24 09:36:20 EST
Yup, it certainly has no business touching files outside the buildroot.
I'll have a look...
Comment 3 Panu Matilainen 2014-02-07 06:26:55 EST
Mmh. Getting python compileall.compile_dir() to comply is not entirely straightforward. Its rx-argument could probably be (ab)used for the purpose but doing so within a single-liner python -c invocation is...

Anyway, its something to fix but not perhaps super urgent. As a short-term workaround, you can add "BuildConfilicts: python-feedparser" with a comment pointing to this bug.
Comment 4 Kevin Fenzi 2014-02-07 12:03:08 EST
ok, added in rawhide. 

Should we keep this open?
Comment 5 Zbigniew Jędrzejewski-Szmek 2014-02-07 12:10:59 EST
I think so. BuildConflict is just a band-aid.
Comment 6 Panu Matilainen 2014-02-10 01:44:39 EST
Yeah, lets leave this open.
Comment 7 Fedora End Of Life 2015-05-29 05:41:17 EDT
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Comment 8 Ľuboš Kardoš 2015-07-01 09:22:21 EDT
Fixed upstream as d2a6bec00041032f29bc65360adeff04f19f2db5

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