{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs";
advisory-db = {
url = "github:rustsec/advisory-db";
flake = false;
};
crane.url = "github:ipetkov/crane";
flake-utils.url = "github:numtide/flake-utils";
rust-overlay = {
url = "github:oxalica/rust-overlay";
inputs.nixpkgs.follows = "nixpkgs";
};
};
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)];
};
craneLib = crane.mkLib nixpkgs.legacyPackages.${system};
# When filtering sources, we want to allow assets other than .rs files
unfilteredRoot = ./.; # The original, unfiltered source
src = pkgs.lib.fileset.toSource {
root = unfilteredRoot;
fileset = pkgs.lib.fileset.unions [
# Default files from crane (Rust and cargo files)
(craneLib.fileset.commonCargoSources unfilteredRoot)
./examples
./helpers
./src/snapshots
];
};
nativeBuildInputs = pkgs.lib.optionals pkgs.stdenv.isDarwin [
# Additional darwin specific inputs can be set here
pkgs.libiconv
];
# Dependencies needed for tests.
nativeCheckInputs = with pkgs; [git];
# Build just the cargo dependencies for reuse when running in CI.
cargoArtifacts = craneLib.buildDepsOnly {inherit src nativeBuildInputs;};
# Build the actual crate itself, reusing the dependency
# artifacts from above.
mergiraf = craneLib.buildPackage {
inherit cargoArtifacts src nativeBuildInputs nativeCheckInputs;
};
in {
# `nix flake check`
checks = {
# Build the crate as part of `nix flake check` for convenience
inherit mergiraf;
# Run clippy (and deny all warnings) on the crate source,
# again, reusing 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.
mergiraf-clippy = craneLib.cargoClippy {
inherit cargoArtifacts src;
cargoClippyExtraArgs = "--all-targets -- --deny warnings";
};
mergiraf-doc = craneLib.cargoDoc {inherit cargoArtifacts src;};
# Check formatting
mergiraf-fmt = craneLib.cargoFmt {inherit src;};
# Audit dependencies
mergiraf-audit = craneLib.cargoAudit {inherit src advisory-db;};
# Run tests with cargo-nextest.
mergiraf-nextest = craneLib.cargoNextest {
inherit cargoArtifacts src nativeBuildInputs nativeCheckInputs;
partitions = 1;
partitionType = "count";
};
};
# `nix build`
packages = {
inherit mergiraf;
default = mergiraf; # `nix build`
};
# `nix run`
apps.default = flake-utils.lib.mkApp {drv = mergiraf;};
# `nix develop`
devShells.default = craneLib.devShell {
inputsFrom = builtins.attrValues self.checks;
packages =
nativeBuildInputs
++ nativeCheckInputs
++ (with pkgs; [
rust-analyzer
graphviz
mdbook # for building `mergiraf.org`
]);
};
});
}