templates/rust-flake/flake.nix

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

  outputs = { self, nixpkgs, utils }:
    utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };
        cargoToml = with builtins; (fromTOML (readFile ./Cargo.toml));
      in
      rec {
        packages.default = pkgs.rustPlatform.buildRustPackage {
          inherit (cargoToml.package) name version;
          src = nixpkgs.lib.cleanSource ./.;
          doCheck = true;
          cargoLock.lockFile = ./Cargo.lock;
        };

        apps.default = utils.lib.mkApp {
          inherit (cargoToml.package) name;
          drv = packages.default;
        };

        devShell = with pkgs; mkShell {
          packages = [ cargo rustc rustfmt clippy rust-analyzer ];
          RUST_SRC_PATH = rustPlatform.rustLibSrc;
        };
      });
}