77 lines
2.6 KiB
Nix
77 lines
2.6 KiB
Nix
{
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description = "srid/haskell-template: Nix template for Haskell projects";
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
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flake-utils.url = "github:numtide/flake-utils";
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flake-parts.url = "github:hercules-ci/flake-parts";
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haskell-flake.url = "github:srid/haskell-flake";
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treefmt-nix.url = "github:numtide/treefmt-nix";
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treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
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};
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outputs = inputs:
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inputs.flake-parts.lib.mkFlake { inherit inputs; } {
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systems = inputs.flake-utils.lib.defaultSystems;
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imports = [
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inputs.haskell-flake.flakeModule
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inputs.treefmt-nix.flakeModule
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];
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perSystem = { self', system, lib, config, pkgs, ... }: {
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# Our only Haskell project. You can have multiple projects, but this template
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# has only one.
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# See https://github.com/srid/haskell-flake/blob/master/example/flake.nix
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haskellProjects.default = {
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# The base package set (this value is the default)
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# basePackages = pkgs.haskellPackages;
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# Packages to add on top of `basePackages`
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packages = {
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# Add source or Hackage overrides here
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# (Local packages are added automatically)
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};
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# Add your package overrides here
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settings = { };
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# Development shell configuration
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devShell = {
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hlsCheck.enable = false;
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};
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# What should haskell-flake add to flake outputs?
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autoWire = [ "packages" "apps" "checks" ]; # Wire all but the devShell
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};
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# Auto formatters. This also adds a flake check to ensure that the
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# source tree was auto formatted.
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treefmt.config = {
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projectRootFile = "flake.nix";
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programs.ormolu.enable = true;
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programs.nixpkgs-fmt.enable = true;
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programs.cabal-fmt.enable = true;
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programs.hlint.enable = true;
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# We use fourmolu
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programs.ormolu.package = pkgs.haskellPackages.fourmolu;
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};
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# Default package & app.
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packages.default = self'.packages.image-triangles;
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apps.default = self'.apps.image-triangles;
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# Default shell.
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devShells.default = pkgs.mkShell {
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name = "haskell-template";
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meta.description = "Haskell development environment";
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# See https://zero-to-flakes.com/haskell-flake/devshell#composing-devshells
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inputsFrom = [
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config.haskellProjects.default.outputs.devShell
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config.treefmt.build.devShell
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];
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nativeBuildInputs = with pkgs; [
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];
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};
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};
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};
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}
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