kt_log/flake.nix

{
  description = "Rust development environment for the kt_log console logging library";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    inputs@{ self, ... }:
    let
      supportedSystems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];
      forEachSupportedSystem =
        f:
        inputs.nixpkgs.lib.genAttrs supportedSystems (
          system:
          f {
            pkgs = import inputs.nixpkgs {
              inherit system;
              overlays = [
                inputs.self.overlays.default
              ];
            };
          }
        );
    in
    {
      templates = {
        default = {
          path = ./.;
          description = "Rust library development environment using fenix";
        };
      };

      overlays.default = _final: prev: {
        rustToolchain =
          with inputs.fenix.packages.${prev.stdenv.hostPlatform.system};
          combine (
            with stable;
            [
              cargo
              clippy
              rustc
              rustfmt
              rust-src
            ]
          );
      };

      devShells = forEachSupportedSystem (
        { pkgs }:
        {
          default = pkgs.mkShell {
            packages = with pkgs; [
              rustToolchain
              git
              gnumake
              alejandra
              statix
              deadnix
              openssl
              pkg-config
              cargo-deny
              cargo-edit
              cargo-watch
              rust-analyzer
              pre-commit
            ];

            env = {
              RUST_SRC_PATH = "${pkgs.rustToolchain}/lib/rustlib/src/rust/library";
            };

            shellHook = ''
              if [ ! -d .git ]; then
                git init
                echo "✓ Initialized git repository"
              fi

              export PATH="$HOME/.cargo/bin:$PATH"

              echo "[kt_log] Welcome to the Rust library development shell!"
              echo "Tools: cargo, rustc, clippy, rustfmt, rust-analyzer"
              echo "Run 'cargo test', 'cargo clippy', or 'cargo build' to work on the library."
            '';
          };
        }
      );

      packages = forEachSupportedSystem (
        { pkgs }:
        {
          default = pkgs.rustPlatform.buildRustPackage {
            pname = "kt_log";
            version = "0.1.0";
            src = ./.;
            cargoLock.lockFile = ./Cargo.lock;
          };
        }
      );

      checks = forEachSupportedSystem (
        { pkgs }:
        {
          default = self.packages.${pkgs.stdenv.hostPlatform.system}.default;
        }
      );

      formatter = forEachSupportedSystem (
        { pkgs }:
        pkgs.alejandra
      );
    };
}