···

       
1047
       
1047
       
 
       
no redundant dependencies the library component of `scientific-0.3.5.1` depends

     

       
1048
       
1048
       
 
       
on `ghc-prim` which is unused in the library.

     

       
1049
       
1049
       
 
       


     

       
1050
       
1050
       
+
       
### Using hackage2nix with nixpkgs

     

       
1051
       
1051
       
+
       


     

       
1052
       
1052
       
+
       
Hackage package derivations are found in the

     

       
1053
       
1053
       
+
       
[`hackage-packages.nix`](https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/haskell-modules/hackage-packages.nix)

     

       
1054
       
1054
       
+
       
file within `nixpkgs` and are used as the initial package set for

     

       
1055
       
1055
       
+
       
`haskellPackages`. The `hackage-packages.nix` file is not meant to be edited

     

       
1056
       
1056
       
+
       
by hand, but rather autogenerated by [`hackage2nix`](https://github.com/NixOS/cabal2nix/tree/master/hackage2nix),

     

       
1057
       
1057
       
+
       
which by default uses the [`configuration-hackage2nix.yaml`](https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/haskell-modules/configuration-hackage2nix.yaml)

     

       
1058
       
1058
       
+
       
file to generate all the derivations.

     

       
1059
       
1059
       
+
       


     

       
1060
       
1060
       
+
       
To modify the contents `configuration-hackage2nix.yaml`, follow the

     

       
1061
       
1061
       
+
       
instructions on [`hackage2nix`](https://github.com/NixOS/cabal2nix/tree/master/hackage2nix).

     

       
1062
       
1062
       
+
       


     

       
1050
       
1063
       
 
       
## Other resources

     

       
1051
       
1064
       
 
       


     

       
1052
       
1065
       
 
       
  - The Youtube video [Nix Loves Haskell](https://www.youtube.com/watch?v=BsBhi_r-OeE)