Package: debhelper
Version: 12.7
Severity: important

gnubg 1.06.002-2 no longer builds with the latest debhelper, producing the
following error message:

   dh_installman
dh_installman: mv debian/gnubg/usr/share/man/man6/makeweights.6.gz.dh-new 
debian/gnubg/usr/share/man/man6/makeweights.6: No such file or directory
dh_installman: mv debian/gnubg/usr/share/man/man6/bearoffdump.6.gz.dh-new 
debian/gnubg/usr/share/man/man6/bearoffdump.6: No such file or directory
dh_installman: mv debian/gnubg/usr/share/man/man6/makebearoff.6.gz.dh-new 
debian/gnubg/usr/share/man/man6/makebearoff.6: No such file or directory
dh_installman: mv debian/gnubg/usr/share/man/man6/gnubg.6.gz.dh-new 
debian/gnubg/usr/share/man/man6/gnubg.6: No such file or directory
dh_installman: mv debian/gnubg/usr/share/man/man6/makehyper.6.gz.dh-new 
debian/gnubg/usr/share/man/man6/makehyper.6: No such file or directory
dh_installman: Aborting due to earlier error

I strongly suspect that this is a bug introduced in 12.7 with the change
to use man-recode.  The slightly unusual thing about this package is that
the upstream make install logic installs the man pages compressed, so
they're already compressed when dh_installman finds them and it just tries
to convert the character set.  My guess is that the previous man command
used for this handles compressed man pages transparently, but man-recode
does not.

This no longer affects gnubg since I worked around it in debian/rules in
the new version I just uploaded, but I suspect this will make other packages
FTBFS.

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (500, 'unstable-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.2.0-3-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, 
TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages debhelper depends on:
ii  autotools-dev            20180224.1
ii  dh-autoreconf            19
ii  dh-strip-nondeterminism  1.6.0-1
ii  dpkg                     1.19.7
ii  dpkg-dev                 1.19.7
ii  dwz                      0.13-1
ii  file                     1:5.37-5
ii  libdebhelper-perl        12.6.1
ii  libdpkg-perl             1.19.7
ii  man-db                   2.8.7-3
ii  perl                     5.30.0-6
ii  po-debconf               1.0.21

debhelper recommends no packages.

Versions of packages debhelper suggests:
pn  dh-make  <none>

-- no debconf information

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