`cabal install --lib` is very hard to use properly. I would advise against it.
It is much easier to create a simple cabal project and use normal cabal build commands. I packaged things in a repo for you. https://github.com/mpickering/t25064 ``` cabal build -w ghc-9.6.2 (fails) cabal build -w /path/to/devel/compiler (fails with error message) ``` Matt On Tue, Jul 9, 2024 at 9:58 AM Simon Peyton Jones <simon.peytonjo...@gmail.com> wrote: > > Friends > > I'm trying to repro #25064 with my development build of GHC. The test case > depends on packages `primitive` and `hashtables`. So I try this (see below). > > Alas, apparently after the `cabal install`, it can't find Prelude. > > What should I do? I tried removing the "environments" file, whatever that > is, which then meant it could find Prelude -- but the libraries were no > longer installed. > > I lack a decent model of what is going on with installing packages for my > development builds. Is there a write up anywhere? > > Thanks > > Simon > > > bash$ cabal install --lib hashtables primitive --with-compiler > $HOME/code/HEAD/$s2 > Warning: Unknown/unsupported 'ghc' version detected (Cabal 3.10.1.0 supports > 'ghc' version < 9.8): /home/simonpj/code/HEAD/_build/stage1/bin/ghc is version > 9.11.20240517 > Warning: Unknown/unsupported 'ghc' version detected (Cabal 3.10.1.0 supports > 'ghc' version < 9.8): /home/simonpj/code/HEAD/_build/stage1/bin/ghc is version > 9.11.20240517 > Resolving dependencies... > bash$ ~/code/HEAD/$s2 -c T25064.hs > Loaded package environment from > T25064.hs:1:8: error: [ ]8;;https://errors.haskell.org/messages/GHC-87110 > \GHC-87110 ]8;; \] > Could not load module ‘Prelude’. > It is a member of the hidden package ‘base-4.20.0.0’. > Use -v to see a list of the files searched for. > | > 1 | module Bug where > | ^^^ > > bash$ rm /home/simonpj/.ghc/x86_64-linux-9.11.20240517/environments/default > bash$ ~/code/HEAD/$s2 -c T25064.hs > T25064.hs:3:1: error: [ ]8;;https://errors.haskell.org/messages/GHC-61948 > \GHC-61948 ]8;; \] > Could not find module ‘Control.Monad.Primitive’. > Perhaps you meant Control.Monad.Writer (from mtl-2.3.1) > Use -v to see a list of the files searched for. > | > 3 | import Control.Monad.Primitive > | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > T25064.hs:4:1: error: [ ]8;;https://errors.haskell.org/messages/GHC-87110 > \GHC-87110 ]8;; \] > Could not find module ‘Data.HashTable.ST.Basic’. > Use -v to see a list of the files searched for. > | > 4 | import qualified Data.HashTable.ST.Basic as H > | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > > _______________________________________________ > ghc-devs mailing list > ghc-devs@haskell.org > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
