51 lines
1.3 KiB
Nix
51 lines
1.3 KiB
Nix
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{
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description = "A minimal Haskell flake";
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/nixos-21.11";
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flake-utils = {
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url = "github:numtide/flake-utils";
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inputs.nixpkgs.follows = "nixpkgs";
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};
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};
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outputs = { self, nixpkgs, flake-utils }: {
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overlay = final: prev: {
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hello-world = prev.haskellPackages.callCabal2nix "hello-world" self { };
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};
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} // (flake-utils.lib.eachDefaultSystem (system:
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let
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pkgs = import nixpkgs {
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inherit system;
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overlays = [ self.overlay ];
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};
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haskell = {
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ghc = pkgs.haskellPackages.ghc;
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hls = pkgs.haskell-language-server.override {
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supportedGhcVersions = [ "8107" ];
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};
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};
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in
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with pkgs; {
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packages = { inherit hello-world; };
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defaultPackage = self.packages.${system}.hello-world;
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devShell = mkShell {
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buildInputs = lib.attrValues self.packages.${system} ++ [
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haskell.ghc
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haskell.hls
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gdb
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# GHC depends on LANG so need this package to properly interpret our
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# files with e.g. tasty-discover.
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# https://www.reddit.com/r/Nix/comments/jyczts/nixshell_locale_issue/
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glibcLocales
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haskellPackages.cabal-install
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haskellPackages.ormolu
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haskellPackages.tasty-discover
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];
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};
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}));
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}
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