I can find haskell packages via nix-env:
nix-enf -f "<nixpkgs>" -qaP -A haskellPackages
...
yet when I try and install them using environment.systemPackages in /etc/nixos/configuration.nix:
environment.systemPackages = with pkgs; [
haskellPackages.haskellPlatform
];
I get the error:
error: attribute 'haskellPlatform' missing, at /etc/nixos/configuration.nix:54:5
Any ideas? I am intending on using xmonad and want to do haskell dev'.
haskellPlatform has been removed with the update to GHC 7.8.2, see the mailing list thread for more details.
You should be able to install any package found via nix-enf -f "<nixpkgs>" -qaP -A haskellPackages to environment.systemPackages.
Searching for haskellPackages.haskellPlatform with nix-env should result in the same kind of error that you get during the rebuild:
nix-env -f "<nixpkgs>" -qaP -A haskellPackages.haskellPlatform
error: attribute ‘haskellPlatform’ in selection path ‘haskellPackages.haskellPlatform’ not found
Any valid haskell package can be installed in the environment, for example xmobar:
environment.systemPackages = with pkgs; [
haskellPackages.xmobar
];
haskellPlatform I still got xmonadContrib and xmonadExtras errors. Do they exist still in a different form? Removing those lets me install xmonad at least -- should I just install stack instead of haskellPlatform?
xmonad-contrib, xmonad-extras.