issue-6083-b.cabal:19:31: colon specifier is experimental feature (issue #5660) cabal-version: 3.0 name: issue version: 6083 library default-language: Haskell2010 build-depends: base, sublib library sublib default-language: Haskell2010 executable demo-a main-is: Main.hs build-depends: issue, sublib executable demo-b main-is: Main.hs build-depends: issue, sublib