message: Snap: simplify hunspell dictionaries collection
  Instead of guessing and blacklisting some packages, simply query apt
  for all packages that provide the virtual hunspell-dictionary one,
  yielding all available providers.
diff: @@ -219,29 +219,14 @@ parts:
  set -eu
  # Download all dictionary packages, and extract to install prefix
  - apt download $(
  - apt-cache search '^hunspell-.*$' \
  - | sort \
  - | grep \
  - --extended-regexp \
  - --invert-match \
  - '(myspell|dbgsym|tools|transitional|dependency)' \
  - | cut --fields=1 --delimiter=' ' \
  - | tr '\n' ' '
  - )
  - find -name '*.deb' \
  - | xargs \
  - --max-args=1 \
  - --replace={} \
  - --verbose \
  - dpkg-deb --extract {} ../install
  + apt download $(apt-cache showpkg hunspell-dictionary | awk '/Pa/, /Reverse P/ {next} {print $1 | "sort"}')
  + find -name '*.deb' | xargs --max-args=1 --replace={} --verbose dpkg-deb --extract {} ../install
  filesets:
  - hunspell-dictionaries:
  + dictionaries:
  - usr/share/hunspell/*
  - myspell-dictionaries:
  - usr/share/myspell/*
  stage:
  - - $hunspell-dictionaries
  + - $dictionaries
  prime:
  - - $hunspell-dictionaries
  + - $dictionaries
  