{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
fenix = {
url = "github:nix-community/fenix";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs =
{ self
, nixpkgs
, flake-utils
, fenix
}: flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
stdenv =
if pkgs.stdenv.isLinux then
pkgs.stdenvAdapters.useMoldLinker pkgs.stdenv
else
pkgs.stdenv;
mkToolchain = fenix.packages.${system}.combine;
toolchain = fenix.packages.${system}.stable;
devToolchain = mkToolchain (with toolchain; [
cargo
clippy
rust-src
rustc
# Always use nightly rustfmt because most of its options are unstable
fenix.packages.${system}.latest.rustfmt
]);
in
{
devShells.default = (pkgs.mkShell.override { inherit stdenv; }) {
# Rust Analyzer needs to be able to find the path to default crate
# sources, and it can read this environment variable to do so. The
# `rust-src` component is required in order for this to work.
RUST_SRC_PATH = "${devToolchain}/lib/rustlib/src/rust/library";
# Development tools
nativeBuildInputs = [
devToolchain
] ++ (with pkgs; [
engage
nixpkgs-fmt
]) ++ (with pkgs.nodePackages; [
markdownlint-cli
]);
};
checks = {
devShellsDefault = self.devShells.${system}.default;
};
});
}