with import <stockholm/lib>;
let
  overrides = self: super: mapNixDir (path: self.callPackage path {}) ./.;
in
self: super:
{
  haskell = super.haskell // {
    packages = mapAttrs (name: value:
      if hasAttr "override" value
        then value.override { inherit overrides; }
        else value
    ) super.haskell.packages;
  };
  haskellPackages = super.haskellPackages.override {
    inherit overrides;
  };
}