Bern, here is the failing output:

====
Collecting gpg
  Using cached gpg-1.10.0.tar.gz (39 kB)
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'error'
  error: subprocess-exited-with-error
  
  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [2 lines of output]
      <string>:163: SyntaxWarning: invalid escape sequence '\s'
      Could not find gpgme-config.  Please install the libgpgme development package.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
Ignoring error ubuntu-24.04: issue2551368

====

The code is still being built. The error is filtered and results in the
"Ignoring error ... issue2551368" message and suppresses the error status
that would terminate the build.

See:

https://github.com/roundup-
tracker/roundup/actions/runs/13607167708/job/38039992107#step:15:127

for the current log output.

Search any 3.12 log for:

  Collecting gpg

to see the output if the direct link doesn't work.

While debian does include gpgme, and I install gpgme-devel which include gpgme:

https://github.com/roundup-
tracker/roundup/blob/41b16fad435e6819380c21ce594adeff8c191612/.github/workflows/ci-
test.yml#L232-L244

gpgme/gpgme-devel doesn't include gpgme-config AFAICT.