{ inputs = { nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-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 pkgs = import nixpkgs { inherit system overlays; }; overlays = [ (import rust-overlay) ]; in { devShells.default = pkgs.mkShellNoCC { packages = with pkgs; [ (rust-bin.stable.latest.default.override { extensions = [ "rust-src" "clippy" "rust-analyzer" ]; }) ]; }; } ); }