[Nix-dev] package dependency problem: ghc-mod: cannot satisfy -package-id mtl-2.1.3.1

[Carlo Nucera]

Hi Peter,

I think that 'hsEnv approach' means essentially ghcWithPackages, as
detailed in this wiki page: https://nixos.org/wiki/Haskell (search for
'hsEnv', it's in 'Local use via Nixpkgs config' section. I don't know
if that information is outdated, but it created problems also for me
(half a year ago, or so).

Paul, I think you could benefit from this mail from Peter outlining
how to setup a working haskell installation:
http://article.gmane.org/gmane.linux.distributions.nixos/15045

Or, if you prefer another approach, I remember this blog post to work
(caution, it's not using ghcWithPackages, which is the suggested
installation):
http://www.cse.chalmers.se/~bernardy/nix.html

Best regards
Carlo

2014-12-14 19:34 GMT+01:00 Peter Simons <simons at cryp.to>:
> Hi Paul,
>
>  > I have a problem keeping ghc-mod happy. After trying a number of other
>  > approaches I have opted to install all haskell packages to my profile
>  > via the 'hsEnv' approach.
>
> what exactly is an hsEnv approach?
>
> Best regards,
> Peter
>
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