This package (and probably also app-editors/vim) needs to be configured to trigger a rebuild when PERL_FEATURES USE flags are changed if the "perl" USE flag is used. I had to add "ithreads" to my PERL_FEATURES to make sys-process/parallel's parcat tool work, but that didn't trigger a rebuild of app-editors/gvim leaving me with a vim that can't be run: $ vim vim: symbol lookup error: vim: undefined symbol: PL_stack_base o/ emanuele6
