55 lines
1.5 KiB
Nix
55 lines
1.5 KiB
Nix
{
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# Compares a generic dev shell with a Haskell-specific `shellFor` shell
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# while building the same local package in both cases.
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description = "Compare mkShell and shellFor";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
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};
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outputs =
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{ self, nixpkgs, ... }:
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let
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system = "x86_64-linux";
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pkgs = import nixpkgs { inherit system; };
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haskellPackages = pkgs.haskellPackages.override {
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overrides = final: _: {
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mini-shell-choice = final.callCabal2nix "mini-shell-choice" ./. { };
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};
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};
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project = haskellPackages.mini-shell-choice;
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checkedProject = pkgs.haskell.lib.doCheck project;
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genericShell = pkgs.mkShell {
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packages = [
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haskellPackages.ghc
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pkgs.cabal-install
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pkgs.haskell-language-server
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];
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};
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shellForShell = haskellPackages.shellFor {
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packages = hp: [ hp.mini-shell-choice ];
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nativeBuildInputs = [
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pkgs.cabal-install
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pkgs.haskell-language-server
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];
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};
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in
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{
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packages.${system}.default = project;
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apps.${system}.default = {
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type = "app";
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program = "${self.packages.${system}.default}/bin/mini-shell-choice";
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meta.description = "Run the package used by both shell styles.";
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};
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devShells.${system} = {
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default = genericShell;
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generic = genericShell;
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shellFor = shellForShell;
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};
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checks.${system}.test-suite = checkedProject;
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};
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}
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