[Bug 2051512] Re: apport ftbfs with Python 3.12 as the default

[Simon Chopin]

After further investigations into the gzip issue in python 3.12, it
turns out there was an undocumented change: it is now a buffered writer.
So the fire&forget pattern used in the snippet above doesn't work
anymore, we now need to use it as a proper IO object instead.

I still think this should be reported upstream because of the
documentation issue, but I'll work on changing the apport code to Do The
Right Thing.

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https://bugs.launchpad.net/bugs/2051512

Title:
  apport ftbfs with Python 3.12 as the default

Status in apport package in Ubuntu:
  Confirmed
Status in python3-defaults package in Ubuntu:
  New
Status in python3.12 package in Ubuntu:
  New
Status in apport source package in Noble:
  Confirmed
Status in python3-defaults source package in Noble:
  New
Status in python3.12 source package in Noble:
  New

Bug description:
  [Description]

  Python 3.12 gzip.GZipFile.write() outputs truncated data in some cases
  (maybe all?)

  [Test Plan]

  Run the following script:

  import gzip
  import io
  out = io.BytesIO()
  gzip.GzipFile("foo", mode="wb", fileobj=out, mtime=0).write(b"FooFoo")
  # print(out.getvalue())
  print(gzip.decompress(out.getvalue()))

  Expected output (as on Python 3.11):
  FooFoo

  Buggy output (tail end of the stack trace):
  EOFError: Compressed file ended before the end-of-stream marker was reached

  [Original report]

  debian/rules override_dh_auto_test
  make[1]: Entering directory '/<<PKGBUILDDIR>>'
  tests/run-linters --errors-only
  Skipping mypy tests, mypy is not installed
  Running pylint...
  ************* Module apport-retrace
  bin/apport-retrace:577:44: E0601: Using variable 'crashid' before assignment (used-before-assignment)
  make[1]: *** [debian/rules:23: override_dh_auto_test] Error 2
  make[1]: Leaving directory '/<<PKGBUILDDIR>>'
  make: *** [debian/rules:4: binary] Error 2

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