How to include build-tool-depends in shellFor ghc pkgs?

[dddenis]

Hi,

I am trying to use haskell.nix on a project with c2hs defined in build-tool-depends.
It builds correctly, but when I try to integrate haskell-ide-engine in shellFor environment, which uses cabal underneath - I get:

2020-07-12 11:33:34.659885955 [ThreadId 14] - cabal: Could not resolve dependencies:
2020-07-12 11:33:34.659905655 [ThreadId 14] - [__0] trying: haskell-nix-c2hs-0.1.0.0 (user goal)
2020-07-12 11:33:34.659924375 [ThreadId 14] - [__1] unknown package: haskell-nix-c2hs:c2hs:exe.c2hs (dependency of
2020-07-12 11:33:34.659943695 [ThreadId 14] - haskell-nix-c2hs)
2020-07-12 11:33:34.659960355 [ThreadId 14] - [__1] fail (backjumping, conflict set: haskell-nix-c2hs,
2020-07-12 11:33:34.659977975 [ThreadId 14] - haskell-nix-c2hs:c2hs:exe.c2hs)
2020-07-12 11:33:34.659994695 [ThreadId 14] - After searching the rest of the dependency tree exhaustively, these were the
2020-07-12 11:33:34.660012995 [ThreadId 14] - goals I've had most trouble fulfilling: haskell-nix-c2hs,
2020-07-12 11:33:34.660029935 [ThreadId 14] - haskell-nix-c2hs:c2hs:exe.c2hs

Is it possible to let cabal in shellFor environment know of c2hs existence?

Here is a minimal demo repo: https://github.com/dddenis/haskell-nix-c2hs

[rvl]

Thanks for the report @dddenis - this is the same issue as #231.

[codygman]

The latest state of this issue seems to be: #1367 (comment)