flake.nix

{
  description = "A Rust project development environment using Nix flakes";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

    naersk.url = "github:nix-community/naersk";
    naersk.inputs.nixpkgs.follows = "nixpkgs";

    flake-utils.url = "github:numtide/flake-utils";

    rust-overlay.url = "github:oxalica/rust-overlay";
    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";

    nix-develop-gha.url = "github:nicknovitski/nix-develop";
    nix-develop-gha.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs =
    {
      self,
      rust-overlay,
      naersk,
      nixpkgs,
      nix-develop-gha,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ (import rust-overlay) ];
        };

        toolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;

        naersk' = naersk.lib.${system}.override {
          cargo = toolchain;
          rustc = toolchain;
        };

      in
      {
        packages = {
          github-actions = nix-develop-gha.packages.${system}.default;
          default = naersk'.buildPackage {
            src = ./.;
            doCheck = true;
            nativeBuildInputs = with pkgs; [ pkgsStatic.stdenv.cc ];
            CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";
            CARGO_BUILD_RUSTFLAGS = "-C target-feature=+crt-static";
          };
        };
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            toolchain
            cargo-watch
            cargo-lambda

            go
            pnpm_9

            just
          ];

        };
      }
    );
}