[Nix-dev] Locally built haskell package not showing up in ghci

[Benno Fünfstück]

Hi Carlo,

can you try running nix-shell with --pure as an addiitional argument? If
you don't pass --pure, nix-shell might pick up packages from your user
environment.

Benno

Carlo Nucera <meditans at gmail.com> schrieb am Mon Dec 01 2014 at 18:59:09:

> Hi all,
> a couple weeks ago I was trying to package the haskell music-suite for
> nix. I stopped for a few weeks to let the mantainer fix some problems
> with bounds on dependencies. However, when starting to package again
> today, I found an unexpected problem.
>
> Let's say I'm packaging up music-dynamics-literal, a very simple
> package. I add the expression in top-level/haskellPackages, and create
> the .nix file with cabal2nix in the right place.
>
> Then I install the package with
> code/nixpkgs $ nix-env -f . -iA haskellPackages.musicDynamicsLiteral
>
> and the installation succeeds, but I'm not able to import
> Music.Dynamics.Literal in ghci.
>
> I also tried with the command
> nix-shell -I nixpkgs=. -p haskellPackages.musicDynamicsLiteral
> haskellPackages.ghc
> to no avail.
>
> My nix-env -q contains, among other things:
> ghc-7.8.3-wrapper
> haskell-music-dynamics-literal-ghc7.8.3-1.8-shared
>
> And my ghc-pkg list is here: http://lpaste.net/115449
> (I gather that there are broken packages, but I didn't solve the issue
> nuking ~/.ghc or ~/.cabal)
>
> Do you have any pointer?
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