{ description = "Dimmer smoothly transitions your screen from one brightness to another."; inputs = { nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; rust-overlay.url = "github:oxalica/rust-overlay"; flake-utils.url = "github:numtide/flake-utils"; }; outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }: flake-utils.lib.eachDefaultSystem (system: let overlays = [ (import rust-overlay) ]; pkgs = import nixpkgs { inherit system overlays; }; rustPlatform = pkgs.makeRustPlatform { cargo = pkgs.rust-bin.stable.latest.default; rustc = pkgs.rust-bin.stable.latest.default; }; rustPackage = rustPlatform.buildRustPackage { name = "dimmer"; src = ./.; cargoLock.lockFile = ./Cargo.lock; }; in with pkgs; { devShells.default = mkShell { buildInputs = [ rust-bin.stable.latest.default ]; shellHook = '' cat <