{ description = "A Nix-flake-based Rust development environment"; inputs = { nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1"; # unstable Nixpkgs fenix = { url = "https://flakehub.com/f/nix-community/fenix/0.1"; inputs.nixpkgs.follows = "nixpkgs"; }; }; outputs = { self, ... }@inputs: let supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ]; forEachSupportedSystem = f: inputs.nixpkgs.lib.genAttrs supportedSystems ( system: f { pkgs = import inputs.nixpkgs { inherit system; overlays = [ inputs.self.overlays.default ]; }; } ); in { overlays.default = final: prev: { rustToolchain = with inputs.fenix.packages.${prev.stdenv.hostPlatform.system}; combine ( with stable; [ clippy rustc cargo rustfmt rust-src ] ); }; devShells = forEachSupportedSystem ( { pkgs }: { default = pkgs.mkShell { packages = with pkgs; [ clang rustToolchain openssl pkg-config cargo-deny cargo-edit cargo-watch rust-analyzer # Panama FFI jextract rust-cbindgen zulu25 ]; env = { # Required by rust-analyzer RUST_SRC_PATH = "${pkgs.rustToolchain}/lib/rustlib/src/rust/library"; CPATH = "${pkgs.glibc.dev}/include"; }; }; } ); }; }