[Nix-dev] A Journey into the Haskell NG infrastructure: Part I

[Benno Fünfstück]

Hi Peter,

The new haskell infrastructure looks very nice, thanks for that, I
especially like that now most of haskell related expressions are in one
dictionary and not spread out over the whole nixpkgs tree. However, I
wonder if it would be possible to just use ghcWithPackages in
generic-builder.nix too? That way, the symlinking logic does not have to be
duplicated, and if we set the NIX_GHC_* variables for GHC-paths then
packages will find their libraries even if they use the GHC API. Are there
any disadvantages to that approach which I have missed? Another benefit
would be that there is no need for a separate env target in this setup,
running nix-shell on the real expression will just work.

Kind regards,
Benno

Peter Simons <simons at cryp.to> schrieb am So., 11. Jan. 2015 02:02:

> Hi Richard,
>
>  > Configuring cabal-test-quickcheck-0.1.2...
>  > Setup: At least the following dependencies are missing:
>  > Cabal ==1.20.*
>
> that error is fixed in revision [1]. Thanks for the report!
>
> Best regards,
> Peter
>
> [1] https://github.com/NixOS/nixpkgs/commit/7fa32aecd183f4fcede821a2b0c60a
> 925c0e2ef5.
>
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