Re: regression in ghc / cabal integration in 9.2.1

2021-10-30 Thread Mikolaj Konarski
Hi George, Have you looked at the ticket I gave you? Here's one linked from it mentioning the topic of ghc-pkg compatibility with v2-install: https://github.com/haskell/cabal/issues/6508 I'm afraid we don't have any systematic exposition of cabal history with rationale for its major changes, but

Re: regression in ghc / cabal integration in 9.2.1

2021-10-30 Thread Brandon Allbery
Wasn't there specifically a new cabal version released to deal with 9.2.1? 3.4.1.0 / 3.6.2.0? On Sat, Oct 30, 2021 at 3:24 PM George Colpitts wrote: > > Thanks for the quick response Mikolaj. Sorry for the confusion, with cabal > install I did use --lib but accidentally omitted that in my

Re: regression in ghc / cabal integration in 9.2.1

2021-10-30 Thread George Colpitts
Thanks for the quick response Mikolaj. Sorry for the confusion, with cabal install I did use --lib but accidentally omitted that in my original email. In 9.0.1 this results in a successful compilation but in 9.2.1 it does not thus I believe this is a regression. Here's the output I got in 9.2.1:

Re: regression in ghc / cabal integration in 9.2.1

2021-10-30 Thread Mikolaj Konarski
Hi George, Since many versions of cabal, `install` only installs executables, not libraries, so if that worked for you, you must have had an old version of cabal. Please see https://github.com/haskell/cabal/issues/6481 for some context and to help you find a new workflow that works for you

regression in ghc / cabal integration in 9.2.1

2021-10-30 Thread George Colpitts
Thanks Ben! There seems to be a regression in ghc / cabal integration in 9.2.1. In 9.2.1 if I do cabal install vector Compilation of a file containing import Data.Vector main = undefined fails with Could not find module ‘Data.Vector’ Perhaps you meant Data.Functor (from