Bug#944551: lintian: missing-python-build-dependency false positive

[Thorsten Glaser <tg@mirbsd.de>]

Package: lintian
Version: 2.34.0

musescore-general-soundfont (0.1.8-1) which I’m about to upload
triggers this…

E: musescore-general-soundfont source: missing-python-build-dependency

… despite Build-Depending on python3-minimal. Incidentally, the
musescore-general-soundfont-small (0.1.8-1) sister package doesn’t
trigger it.

The -small one (doesn’t trigger) uses py3k in d/rules like this:

        set -- *.[Ss][Ff]2; \
            cmt=$$(sed '1,/^Licence:$$/d' debian/copyright | sed 1d; echo x); \
            python3 debian/riffedit.py "$$1" builddir/tmp.sf2 \
	  […]

The full one (triggers) has an additional line:

        python3 debian/riffedit.py \
            builddir/tmp.sf2 builddir/${sfbasename}.sf2 \
            -az 'LIST<INFO>/INAM' '${sfbasename}.sf2'

I suspect the check is flawed in that it checks for debian/rules
lines matching /^\tpython/ (so it doesn’t trigger when the call
is part of a pipeline; if so, the 0.1.7-2 version currently in the
archive would also trigger this false positive) and mis-detects
the py3k call as a call to python.

bye,
//mirabilos
-- 
<ch> you introduced a merge commit        │<mika> % g rebase -i HEAD^^
<mika> sorry, no idea and rebasing just fscked │<mika> Segmentation
<ch> should have cloned into a clean repo      │  fault (core dumped)
<ch> if I rebase that now, it's really ugh     │<mika:#grml> wuahhhhhh