Bug#941476: dh-fortran-mod: does not expand Depends: ${Fortran-Mod}

[Drew Parsons]

Package: dh-fortran-mod
Version: 0.13
Severity: normal

The man page for dh_fortran_mod says that the tool will expand
Depends: ${Fortran-Mod} with the appropriate fortran reference
("adds dependencies...as required to the package using via the
variable ${Fortran-Mod}")

But in fact ${Fortran-Mod} is ignored (here bulding petsc
3.11.4+dfsg1-1)

   debian/rules override_dh_gencontrol
   make[1]: Entering directory '/build/petsc-3.11.4+dfsg1'
   dh_gencontrol -- -VMPI:Depends="libopenmpi-dev (>= 3.1.3),libopenmpi-dev (<< 3.2)"
dpkg-gencontrol: warning: Depends field of package
libpetsc-complex3.11-dev: substitution variable ${Fortran-Mod} used, but is not defined


The tool is not working as expected from the description in the man
page, or the man page is not sufficiently clear about how to
set the Depends field.  No gfortran-$version entry is added to
${misc:Depends} either.


-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.2.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages dh-fortran-mod depends on:
ii  debhelper                   12.6.1
ii  libfile-libmagic-perl       1.16-1+b1
ii  perl [libio-compress-perl]  5.28.1-6

dh-fortran-mod recommends no packages.

dh-fortran-mod suggests no packages.

-- no debconf information