flake.nix

{
  inputs = {
    naersk.url = "github:nix-community/naersk/master";
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, utils, naersk }:
    utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };
        naersk-lib = pkgs.callPackage naersk { };
      in
      {
        packages.default = naersk-lib.buildPackage {
          src = ./.;
          postInsall = ''
            wrapProgram "$out/bin/amber" --set PATH ${nixpkgs.lib.makeBinPath [
              pkgs.bc
            ]}
          '';
        };
        devShells.default = with pkgs; mkShell {
          buildInputs = [ bc cargo rustc rustfmt pre-commit rustPackages.clippy ];
          RUST_SRC_PATH = rustPlatform.rustLibSrc;
        };
      }
    );
}