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55 lines
2.0 KiB
Nix
55 lines
2.0 KiB
Nix
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# Derived from: https://github.com/jonascarpay/template-haskell
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# More info here: https://jonascarpay.com/posts/2021-01-28-haskell-project-template.html
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{
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description = "hello";
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inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
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inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
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inputs.flake-utils.url = "github:numtide/flake-utils";
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outputs = { self, nixpkgs, flake-utils, haskellNix }:
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flake-utils.lib.eachDefaultSystem (system:
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let
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overlay = self: _: {
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hsPkgs = self.haskell-nix.project' rec {
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src = ./.;
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compiler-nix-name = "ghc8107";
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shell = {
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tools = {
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cabal = "latest";
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ghcid = "latest";
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haskell-language-server = "latest";
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hlint = "latest";
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# See https://github.com/input-output-hk/haskell.nix/issues/1337
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ormolu = {
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version = "latest";
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modules = [
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({ lib, ... }: {
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options.nonReinstallablePkgs =
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lib.mkOption { apply = lib.remove "Cabal"; };
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})
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];
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};
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};
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## ormolu that uses ImportQualifiedPost.
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## To use, remove ormolu from the shell.tools section above, and uncomment the following lines.
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# buildInputs =
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# let
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# ormolu = pkgs.haskell-nix.tool compiler-nix-name "ormolu" "latest";
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# ormolu-wrapped = pkgs.writeShellScriptBin "ormolu" ''
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# ${ormolu}/bin/ormolu --ghc-opt=-XImportQualifiedPost $@
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# '';
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# in
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# [ ormolu-wrapped ];
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};
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};
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};
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pkgs = import nixpkgs {
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inherit system;
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overlays = [ haskellNix.overlay overlay ];
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};
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flake = pkgs.hsPkgs.flake { };
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in flake // { defaultPackage = flake.packages."hello:exe:hello-exe"; });
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}
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