49 lines
1.5 KiB
Nix
49 lines
1.5 KiB
Nix
{
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description = "A haskell executable";
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outputs = { self, nixpkgs, flake-utils, ... }:
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flake-utils.lib.eachDefaultSystem (system:
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let
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overlays = [];
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pkgs = import nixpkgs { inherit system overlays; config.allowBroken = true; };
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# package/executable name
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packageName = "";
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execName = packageName;
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# version of ghc used
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hp = pkgs.haskellPackages;
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project = returnShellEnv:
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hp.developPackage {
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inherit returnShellEnv;
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name = packageName;
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root = ./.;
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withHoogle = false;
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overrides = self: super: with pkgs.haskell.lib; {
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# Use callCabal2nix to override Haskell dependencies here
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# cf. https://tek.brick.do/K3VXJd8mEKO7
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# Example:
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# > NanoID = self.callCabal2nix "NanoID" inputs.NanoID { };
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# Assumes that you have the 'NanoID' flake input defined.
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};
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modifier = drv:
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pkgs.haskell.lib.addBuildTools drv (with hp; [
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# Specify your build/dev dependencies here.
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]);
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};
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in
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{
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# Used by `nix build` & `nix run` (prod exe)
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defaultPackage = project false;
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defaultApp = {
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type = "app";
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program = "${self.defaultPackage.${system}}/bin/${execName}";
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};
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# Used by `nix develop` (dev shell)
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devShell = project true;
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});
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}
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