This looks like broken gobject introspection. Switching components.

Switching components again, as python3-gobject3 is EPEL7, only.

fedmod:

+ /usr/bin/python3 -c 'import sys; sys.argv[0] = '\''fedmod'\''; from _fedmod import cli; cli.run()'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/builddir/build/BUILD/fedmod-0.6.2/_fedmod/__init__.py", line 1, in <module>
    import gi
  File "/usr/lib64/python3.8/site-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: cannot import name '_gi' from 'gi' (/usr/lib64/python3.8/site-packages/gi/__init__.py)

Same problem from libmodulemd (linked the FTBFS bug).

Same problem with gnofract4d

+ xvfb-run -a -n 23 /usr/bin/python3 createdocs.py
/builddir/build/BUILD/gnofract4d-4.0.1/fract4d/absyn.py:198: SyntaxWarning: invalid escape sequence \s
  m = re.match(".*?(\s*\(\s*(\w+)\s*\))", id)
Problem creating docs. Online help will be incomplete.
cannot import name '_gi' from 'gi' (/usr/lib64/python3.8/site-packages/gi/__init__.py)
error: Bad exit status from /var/tmp/rpm-tmp.WHZFDt (%build)

gplugin:

-- checking if pygobject works with python3
CMake Error at python/CMakeLists.txt:76 (message):
    pygobject does not work with python3


-- Configuring incomplete, errors occurred!
See also "/builddir/build/BUILD/gplugin-0.27.0/x86_64-redhat-linux-gnu/CMakeFiles/CMakeOutput.log".
error: Bad exit status from /var/tmp/rpm-tmp.rKoICu (%build)

Colin, could you please prioritize this? We plan to move Python 3.8 to a side tag in ~2 weeks. Packages that will fail to rebuild will block merging the side tag back to rawhide (~1 month from now) and may not be installable in Fedora 31.

package Zim:

+ ./setup.py build
./setup.py:264: SyntaxWarning: invalid escape sequence \m
  'the following two commands:\m'
/builddir/build/BUILD/zim-0.70/zim/fs.py:164: SyntaxWarning: invalid escape sequence \s
  '''Translates paths for windows shares in the platform specific
/builddir/build/BUILD/zim-0.70/zim/parsing.py:267: SyntaxWarning: invalid escape sequence \w
  '''Wrapper around regex pattern objects which memorizes the
/builddir/build/BUILD/zim-0.70/zim/parsing.py:365: SyntaxWarning: invalid escape sequence \w
  is_uri_re = Re('^(\w[\w\+\-\.]*):')
/builddir/build/BUILD/zim-0.70/zim/parsing.py:367: SyntaxWarning: invalid escape sequence \w
  is_url_re = Re('^(\w[\w\+\-\.]*)://')
/builddir/build/BUILD/zim-0.70/zim/parsing.py:369: SyntaxWarning: invalid escape sequence \S
  is_email_re = Re('^(mailto:\S+|[^\s:]+)\@\S+\.\w+(\?.+)?$', re.U)
/builddir/build/BUILD/zim-0.70/zim/parsing.py:381: SyntaxWarning: invalid escape sequence \w
  is_interwiki_re = Re('^(\w[\w\+\-\.]*)\?(.*)', re.U)
/builddir/build/BUILD/zim-0.70/zim/parsing.py:383: SyntaxWarning: invalid escape sequence \w
  is_interwiki_keyword_re = re.compile('^\w[\w\+\-\.]*$', re.U)
Traceback (most recent call last):
  File "./setup.py", line 25, in <module>
    import makeman # helper script
  File "/builddir/build/BUILD/zim-0.70/makeman.py", line 13, in <module>
    from zim.main import HelpCommand
  File "/builddir/build/BUILD/zim-0.70/zim/main/__init__.py", line 22, in <module>
    import zim.fs
  File "/builddir/build/BUILD/zim-0.70/zim/fs.py", line 27, in <module>
    from zim.signals import SignalEmitter, SIGNAL_AFTER
  File "/builddir/build/BUILD/zim-0.70/zim/signals.py", line 7, in <module>
    from gi.repository import GObject
  File "/usr/lib64/python3.8/site-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: cannot import name '_gi' from 'gi' (/usr/lib64/python3.8/site-packages/gi/__init__.py)

caribou:

Traceback (most recent call last):
  File "../tools/make_schema.py", line 3, in <module>
    from gi.repository import GLib
  File "/usr/lib64/python3.8/site-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: cannot import name '_gi' from 'gi' (/usr/lib64/python3.8/site-packages/gi/__init__.py)
make[2]: *** [Makefile:851: org.gnome.antler.gschema.xml.in] Error 1
make[2]: Leaving directory '/builddir/build/BUILD/caribou-0.4.21/data'
make[1]: *** [Makefile:519: all-recursive] Error 1
make: *** [Makefile:474: all-recursive] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.VK1FEu (%build)
    Bad exit status from /var/tmp/rpm-tmp.VK1FEu (%build)

The cause is - /usr/lib64/python3.8/site-packages/gi/_gi.cpython-38m-x86_64-linux-gnu.so has incorrect name:

<mock-chroot> sh-5.0# python3 -c 'from gi.repository import GLib'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib64/python3.8/site-packages/gi/__init__.py", line 42, in <module>
    from . import _gi
ImportError: cannot import name '_gi' from 'gi' (/usr/lib64/python3.8/site-packages/gi/__init__.py)
<mock-chroot> sh-5.0# mv /usr/lib64/python3.8/site-packages/gi/_gi.cpython-38m-x86_64-linux-gnu.so /usr/lib64/python3.8/site-packages/gi/_gi.cpython-38-x86_64-linux-gnu.so
<mock-chroot> sh-5.0# python3 -c 'from gi.repository import GLib'


Note that since 3.8.0a4, the "m" is not supposed to be there. Is it somehow hardcoded?

<mock-chroot> sh-5.0# python3-config --extension-suffix
.cpython-38-x86_64-linux-gnu.so

I don't see it hardcoded in spec, must be the build system, will examine.

Note: The Python 3 tests are skipped in %check. If they were not, the package would probably fail to build.

Examining the build log, this might simply require a bumped rebuild...

Yes, sorry about the noise.

*** Bug 1710754 has been marked as a duplicate of this bug. ***

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 1000 days