ghci and ghc-pkg disagree about what's exposed
I have installed vector-0.10.12.3 and vector-0.11.0.0. At some point, I had hidden both from the package database; however, I later used ghc-pkg expose to mark one as visible again. Now I seem to be in a strange state where ghci and ghc-pkg disagree about what is hidden:
% ghci-7.10.2 GHCi, version 7.10.2: http://www.haskell.org/ghc/ :? for help Prelude> :m +Data.Vector.Unboxed <no location info>: Could not find module ‘Data.Vector.Unboxed’ It is a member of the hidden package ‘vector-0.11.0.0@vecto_3jMaUrldidp1bqsrn0qsS2’. It is a member of the hidden package ‘vector-0.10.12.3@vecto_1COyUuV1LrA1IjYnWfJnbs’. Prelude> Leaving GHCi. % ghc-pkg-7.10.2 list vector | cat /usr/local/lib/ghc-7.10.2/package.conf.d: (no packages) /home/dmwit/.ghc/x86_64-linux-7.10.2/package.conf.d: vector-0.10.12.3 (vector-0.11.0.0) % ghc-pkg-7.10.2 describe vector-0.10.12.3 | grep 'key:\|exposed:' key: vecto_1COyUuV1LrA1IjYnWfJnbs exposed: True
I have tried reproducing this with other packages in a handful of ways and failed; so I can't give instructions for reproducing. But I am happy to perform any diagnostics you can think of.