Is it OK to stabilize =dev-haskell/regex-tdfa-1.2.0 ? If so, please CC all arches which have stable keywords for older versions of this package.
Arches, please go ahead. There's a short set of examples you can test here: https://wiki.gentoo.org/wiki/Project:Haskell/Test_plans#dev-haskell.2Fregex-tdfa
amd64 stable
x86 stable. Closing.