{ description = "Rust build and shell flake based on the one by from zero to nix"; # Flake inputs inputs = { nixpkgs.url = "github:NixOS/nixpkgs"; # also valid: "nixpkgs" rust-overlay.url = "github:oxalica/rust-overlay"; # A helper for Rust + Nix }; # Flake outputs outputs = { self, nixpkgs, rust-overlay }: let # Overlays enable you to customize the Nixpkgs attribute set overlays = [ # Makes a `rust-bin` attribute available in Nixpkgs (import rust-overlay) # Provides a `rustToolchain` attribute for Nixpkgs that we can use to # create a Rust environment (self: super: { rustToolchain = super.rust-bin.stable.latest.default; }) ]; # Systems supported allSystems = [ "x86_64-linux" # 64-bit Intel/AMD Linux "aarch64-linux" # 64-bit ARM Linux "x86_64-darwin" # 64-bit Intel macOS "aarch64-darwin" # 64-bit ARM macOS ]; # Helper to provide system-specific attributes forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f { pkgs = import nixpkgs { inherit overlays system; }; }); in { # Development environment output devShells = forAllSystems ({ pkgs }: { default = pkgs.mkShell { # The Nix packages provided in the environment packages = (with pkgs; [ # Fluff cargo-mommy onefetch # The package provided by our custom overlay. Includes cargo, Clippy, cargo-fmt, # rustdoc, rustfmt, and other tools. rustToolchain ]) ++ pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs; [ libiconv ]); shellHook = '' onefetch ''; }; }); packages = forAllSystems ({ pkgs }: { default = let rustPlatform = pkgs.makeRustPlatform { cargo = pkgs.rustToolchain; rustc = pkgs.rustToolchain; }; in rustPlatform.buildRustPackage { name = "emoji-json-generator"; src = ./.; cargoLock = { lockFile = ./Cargo.lock; }; }; }); }; }