flake.nix

{
  description = "Rust development template";

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

  outputs = {
    self,
    nixpkgs,
    utils,
    ...
  }@inputs:
    utils.lib.eachDefaultSystem
    (
      system: let
        pkgs = import nixpkgs {inherit system;};
        toolchain = pkgs.rustPlatform;
      in rec
      {
       # Used by `nix develop`
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            (with toolchain; [
              cargo
              rustc
              rustLibSrc
            ])
            clippy
            rustfmt
            pkg-config
            rust-analyzer
          ];

          # Specify the rust-src path (many editors rely on this)
          RUST_SRC_PATH = "${toolchain.rustLibSrc}";
        };
      }
    );
}