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Diffstat (limited to 'pkgs/development/haskell-modules/lib.nix')
-rw-r--r-- | pkgs/development/haskell-modules/lib.nix | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/pkgs/development/haskell-modules/lib.nix b/pkgs/development/haskell-modules/lib.nix index fb1302f60ea5..c9dc7254800e 100644 --- a/pkgs/development/haskell-modules/lib.nix +++ b/pkgs/development/haskell-modules/lib.nix @@ -382,4 +382,23 @@ rec { allPkgconfigDepends; }; + # Utility to convert a directory full of `cabal2nix`-generated files into a + # package override set + # + # packagesFromDirectory : { directory : Directory, ... } -> HaskellPackageOverrideSet + packagesFromDirectory = + { directory, ... }: + + self: super: + let + haskellPaths = builtins.attrNames (builtins.readDir directory); + + toKeyVal = file: { + name = builtins.replaceStrings [ ".nix" ] [ "" ] file; + + value = self.callPackage (directory + "/${file}") { }; + }; + + in + builtins.listToAttrs (map toKeyVal haskellPaths); } |