{ description = "Flake for my-crate"; inputs = { nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable"; crane = { url = "github:ipetkov/crane"; inputs.nixpkgs.follows = "nixpkgs"; }; flake-utils.url = "github:numtide/flake-utils"; rust-overlay = { url = "github:oxalica/rust-overlay"; inputs = { nixpkgs.follows = "nixpkgs"; flake-utils.follows = "flake-utils"; }; }; advisory-db = { url = "github:rustsec/advisory-db"; flake = false; }; }; outputs = { self, nixpkgs, crane, flake-utils, rust-overlay, advisory-db, ... }: flake-utils.lib.eachDefaultSystem (system: let pkgs = import nixpkgs { inherit system; overlays = [ (import rust-overlay) ]; }; inherit (pkgs) lib; rustCustomToolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml; craneLib = (crane.mkLib pkgs).overrideToolchain rustCustomToolchain; src = craneLib.cleanCargoSource (craneLib.path ./.); # Common arguments can be set here to avoid repeating them later commonArgs = { inherit src; strictDeps = true; nativeBuildInputs = [ pkgs.pkg-config ]; buildInputs = [ # Add additional build inputs here pkgs.openssl pkgs.taplo ] ++ lib.optionals pkgs.stdenv.isDarwin [ # Additional darwin specific inputs can be set here pkgs.libiconv ]; # Additional environment variables can be set directly # MY_CUSTOM_VAR = "some value"; }; # Build *just* the cargo dependencies, so we can reuse # all of that work (e.g. via cachix) when running in CI cargoArtifacts = craneLib.buildDepsOnly commonArgs; # Build the actual crate itself, reusing the dependency # artifacts from above. my-crate = craneLib.buildPackage (commonArgs // { inherit cargoArtifacts; }); in { checks = { # Build the crate as part of `nix flake check` for convenience inherit my-crate; # Run clippy (and deny all warnings) on the crate source, # again, resuing the dependency artifacts from above. # # Note that this is done as a separate derivation so that # we can block the CI if there are issues here, but not # prevent downstream consumers from building our crate by itself. my-crate-clippy = craneLib.cargoClippy (commonArgs // { inherit cargoArtifacts; cargoClippyExtraArgs = "--all-targets -- --deny warnings"; }); my-crate-doc = craneLib.cargoDoc (commonArgs // { inherit cargoArtifacts; }); # Check formatting my-crate-fmt = craneLib.cargoFmt { inherit src; }; # Audit dependencies my-crate-audit = craneLib.cargoAudit { inherit src advisory-db; }; # Audit licenses my-crate-deny = craneLib.cargoDeny { inherit src; }; # Run tests with cargo-nextest # Consider setting `doCheck = false` on `my-crate` if you do not want # the tests to run twice my-crate-nextest = craneLib.cargoNextest (commonArgs // { inherit cargoArtifacts; partitions = 1; partitionType = "count"; }); }; packages = { default = my-crate; }; apps.default = flake-utils.lib.mkApp { drv = my-crate; }; devShells.default = craneLib.devShell { # Inherit inputs from checks. checks = self.checks.${system}; # Additional dev-shell environment variables can be set directly # MY_CUSTOM_DEVELOPMENT_VAR = "something else"; # Extra inputs can be added here; cargo and rustc are provided by default. packages = with pkgs; [ cargo-watch cargo-deny cargo-audit cargo-update cargo-edit cargo-outdated cargo-license cargo-tarpaulin cargo-zigbuild cargo-nextest cargo-spellcheck cargo-modules cargo-bloat cargo-unused-features bacon helix just ]; }; }); }