Cleanup after testing `cabal2nix`
Cleanup after testing `cabal2nix`

simonmichael/stackage,Daniel-Diaz/stackage,michalkonecny/stackage,soenkehahn/stackage,massysett/stackage,jonschoning/stackage,clinty/stackage,fpco/stackage,mrkkrp/stackage,iand675/stackage