67 lines
1.8 KiB
Nix
67 lines
1.8 KiB
Nix
{
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description = "Haskell Nix Template";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs";
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flake-utils.url = "github:numtide/flake-utils";
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pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
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pre-commit-hooks.inputs.nixpkgs.follows = "nixpkgs";
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};
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outputs = { self, nixpkgs, flake-utils, pre-commit-hooks }:
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flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
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let
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pkgs = nixpkgs.legacyPackages.${system};
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overlay = final: prev: {
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filepack = final.callCabal2nix "filepack" ./. { };
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};
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haskellPackages = pkgs.haskell.packages.ghc924.extend overlay;
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in {
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packages.default = haskellPackages.filepack;
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apps = {
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default = {
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type = "app";
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program = "${self.defaultPackage.${system}}/bin/hello";
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};
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};
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checks = {
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pre-commit-check = pre-commit-hooks.lib.${system}.run {
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src = ./.;
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settings = { ormolu.defaultExtensions = [ "GHC2021" ]; };
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tools.fourmolu = haskellPackages.fourmolu;
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hooks = {
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nixfmt.enable = true;
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fourmolu.enable = true;
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hpack.enable = true;
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hlint.enable = true;
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};
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};
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};
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devShells.default = haskellPackages.shellFor {
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inherit (self.checks.${system}.pre-commit-check) shellHook;
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packages = p: [ p.filepack ];
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withHoogle = true;
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nativeBuildInputs = with pkgs; [
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haskellPackages.haskell-language-server
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haskellPackages.fourmolu
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haskellPackages.hspec-discover
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haskellPackages.doctest
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cabal-install
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ghcid
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nixfmt
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hpack
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hlint
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];
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};
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});
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}
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