I would be nice if it is possible to replace the arts dependency with an check for the arts use flag. The configure scripts of both packages have the option --without-arts. If you could add this feature I would be pleasesd. Adding 'use arts && myconf="$myconf --with-arts" || myconf="$myconf --without-arts" ' to src_compile() should be enough. Reproducible: Always Steps to Reproduce:
*** This bug has been marked as a duplicate of 41308 ***