ed6ecacf64
This change is effectively a no-op to nixpkgs. However, it gives users the flexibility to create and maintain their own package sets per project, while benefiting from nix's Haskell configurations. I would make immediate use of this change in stack2nix, a project that generates nix expressions for all the dependencies of a given Haskell project. @domenkozar is familiar with the motivations and helped refine this change
28 lines
780 B
Nix
28 lines
780 B
Nix
{ pkgs, stdenv, ghc, all-cabal-hashes
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, compilerConfig ? (self: super: {})
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, packageSetConfig ? (self: super: {})
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, overrides ? (self: super: {})
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, initialPackages ? import ./hackage-packages.nix
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}:
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let
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inherit (stdenv.lib) extends makeExtensible;
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inherit (import ./lib.nix { inherit pkgs; }) overrideCabal makePackageSet;
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haskellPackages = makePackageSet {
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package-set = initialPackages;
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inherit ghc;
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};
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commonConfiguration = import ./configuration-common.nix { inherit pkgs; };
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nixConfiguration = import ./configuration-nix.nix { inherit pkgs; };
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in
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makeExtensible
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(extends overrides
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(extends packageSetConfig
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(extends compilerConfig
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(extends commonConfiguration
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(extends nixConfiguration haskellPackages)))))
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