flake.nix

{
  description = "libglaswegian";
  inputs = {
    haskellNix.url = "github:input-output-hk/haskell.nix";
    nixpkgs.follows = "haskellNix/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, flake-utils, haskellNix, fenix, ... }:
    flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
    let
      overlays = [ haskellNix.overlay
        (final: prev: {
          libglaswegian =
            final.haskell-nix.project' {
              src = ./.;
              compiler-nix-name = "ghc8107";
              shell.tools = {
                cabal = "3.8.1.0";
                hlint = "3.4.1";
                haskell-language-server = "1.7.0.0";
              };
            };
        })
        fenix.overlay
      ];
      pkgs = import nixpkgs {
        inherit system overlays;
        inherit (haskellNix) config;
      };
      rust = fenix.packages."${system}";
      flake = pkgs.libglaswegian.flake {};
    in flake // {
      defaultPackage = flake.packages."libglaswegian:foreign-library:glaswegian";
      devShell = pkgs.mkShell {
        nativeBuildInputs = with pkgs; [
          rustPlatform.bindgenHook
          rust.stable.toolchain
          rust-analyzer-nightly
        ];
        inputsFrom = [ ];
      };
    });
}