packagelist: manually override gcc[9..14]

Analysis:

slyon@sid-time-t:~/time_t$ # gcc-10
slyon@sid-time-t:~/time_t$ for dep in libgm2-15 libgnat-10 libgnat-util10 libgo16 libgphobos1; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
* gccgo-10
slyon@sid-time-t:~/time_t$ # gcc-11
slyon@sid-time-t:~/time_t$ for dep in libasan6 libgnat-11 libgo19 libgphobos2; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
* libgcc-10-dev
* libgcc-11-dev
* gccgo-11
slyon@sid-time-t:~/time_t$ # gcc-12
slyon@sid-time-t:~/time_t$ for dep in libgm2-17 libgnat-12 libgo21 libgphobos3; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
* ghdl-gcc [amd64 arm64 armel i386 mips64el ppc64el]
* gccgo-12
slyon@sid-time-t:~/time_t$ # gcc-13
slyon@sid-time-t:~/time_t$ for dep in libgm2-18; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
slyon@sid-time-t:~/time_t$ # gcc-13 (old)
slyon@sid-time-t:~/time_t$ for dep in libgccjit0 libgfortran5 libgm2-18 libgnat-13; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
* libgccjit-10-dev
* libgccjit-11-dev
* libgccjit-12-dev
* libgccjit-13-dev
* libgccjit-14-dev
* libgccjit-9-dev
* python3-gccjit
slyon@sid-time-t:~/time_t$ # gcc-14
slyon@sid-time-t:~/time_t$ for dep in libgccjit0 libgfortran5; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
* libgccjit-10-dev
* libgccjit-11-dev
* libgccjit-12-dev
* libgccjit-13-dev
* libgccjit-14-dev
* libgccjit-9-dev
* python3-gccjit
slyon@sid-time-t:~/time_t$ # gcc-9
slyon@sid-time-t:~/time_t$ for dep in libasan5 libgm2-0 libgnat-9 libgnatvsn9 libgo14 libgphobos76; do reverse-depends -s "$dep" | grep gcc; reverse-depends -b "$dep" | grep gcc; done
* libgcc-9-dev
* gccgo-9

Beware of libasan*:

slyon@sid-time-t:~/time_t$ reverse-depends -s libasan5
Reverse-Depends
===============
* libgcc-9-dev

Packages without architectures listed are reverse-dependencies in: amd64, arm64, armel, armhf, i386, ppc64el, s390x
slyon@sid-time-t:~/time_t$ reverse-depends -s libasan6
Reverse-Depends
===============
* libgcc-10-dev
* libgcc-11-dev

Packages without architectures listed are reverse-dependencies in: amd64, arm64, armel, armhf, i386, ppc64el, s390x
slyon@sid-time-t:~/time_t$ reverse-depends -s libasan8
Reverse-Depends
===============
* libgcc-12-dev
* libgcc-13-dev
* libgcc-14-dev
* wlcs [amd64 arm64 armel armhf i386 ppc64el]

Packages without architectures listed are reverse-dependencies in: amd64, arm64, armel, armhf, i386, ppc64el, s390x