{
  description = "Development environment for mkswap.rs";

  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable-small";

  outputs =
    { self
    , nixpkgs
    , ...
    } @ inputs:
    let
      nameValuePair = name: value: { inherit name value; };
      genAttrs = names: f: builtins.listToAttrs (map (n: nameValuePair n (f n)) names);
      allSystems = [ "x86_64-linux" "aarch64-linux" "i686-linux" "x86_64-darwin" ];

      forAllSystems = f: genAttrs allSystems (system: f {
        inherit system;
        pkgs = import nixpkgs {
          inherit system;
        };
      });
    in
    {
      devShell = forAllSystems ({ system, pkgs, ... }: pkgs.mkShell {
        nativeBuildInputs = with pkgs; [
          cargo
          entr
          rustfmt
          clippy
        ];
      });
    };
}