{
  description =
    "Foliage is a tool to create custom Haskell package repositories, in a fully reproducible way.";

  inputs = {
    nixpkgs.follows = "haskell-nix/nixpkgs-unstable";
    haskell-nix.url = "github:input-output-hk/haskell.nix";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils, haskell-nix }:

    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          inherit (haskell-nix) config;
          overlays = [ haskell-nix.overlay ];
        };

        static-pkgs = if pkgs.stdenv.hostPlatform.isLinux then
          if pkgs.stdenv.hostPlatform.isAarch64 then
            pkgs.pkgsCross.aarch64-multiplatform-musl
          else
            pkgs.pkgsCross.musl64
        else
          pkgs;

        mkFoliage = haskell-nix:
          let
            project = haskell-nix.cabalProject {
              src = ./.;
              compiler-nix-name = "ghc8107";
              shell.tools = {
                cabal = { };
                hlint = { };
                haskell-language-server = { };
              };
              modules = [{
                packages.foliage.components.exes.foliage.dontStrip = false;
              }];
            };
          in project.foliage.components.exes.foliage;

      in rec {
        packages = rec {
          default = foliage;
          foliage = mkFoliage pkgs.haskell-nix;
        } // pkgs.lib.optionalAttrs pkgs.stdenv.isLinux {
          foliage-static = mkFoliage static-pkgs.haskell-nix;
        };

        hydraJobs = packages;
      });

  nixConfig = {
    extra-substituters = [
      "https://cache.iog.io"
      "https://foliage.cachix.org"
      "https://cache.zw3rk.com"
    ];
    extra-trusted-public-keys = [
      "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
      "foliage.cachix.org-1:kAFyYLnk8JcRURWReWZCatM9v3Rk24F5wNMpEj14Q/g="
      "loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk="
    ];
  };
}