aikyo/flake.nix at main · marukun712/aikyo · GitHub

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{
  description = "pnpm workspace with devShell and multi-companion dev runner";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
      in
      {
        apps = {
          dev = {
            type = "app";
            program =
              (pkgs.writeShellApplication {
                name = "dev";
                runtimeInputs = [
                  pkgs.nodejs_24
                  pkgs.pnpm
                  pkgs.coreutils
                ];
                text = ''
                  #!/usr/bin/env bash
                  set -euo pipefail

                  if [ "$#" -eq 0 ]; then
                    echo "Usage: nix run .#dev -- <COMPANION> [<COMPANION> ...]"
                    echo "Example: nix run .#dev -- kyoko aya"
                    exit 1
                  fi

                  pids=()

                  pnpm firehose &
                  pids+=($!)

                  for name in "$@"; do
                    pnpm companion "$name" &
                    pids+=($!)
                  done

                  cleanup() {
                    trap - INT TERM EXIT
                    echo "Shutting down..."
                    kill "''${pids[@]}" 2>/dev/null || true
                    wait || true
                  }
                  trap cleanup INT TERM EXIT

                  wait
                '';
              }).outPath
              + "/bin/dev";
          };

          docs = {
            type = "app";
            program =
              (pkgs.writeShellApplication {
                name = "docs";
                runtimeInputs = [
                  pkgs.nodejs_24
                  pkgs.pnpm
                ];
                text = ''
                  cd docs
                  exec pnpm run dev "$@"
                '';
              }).outPath
              + "/bin/docs";
          };

          bundle = {
            type = "app";
            program =
              (pkgs.writeShellApplication {
                name = "bundle";
                runtimeInputs = [
                  pkgs.nodejs_24
                  pkgs.pnpm
                ];
                text = ''
                  pnpm install
                  pnpm run bundle
                '';
              }).outPath
              + "/bin/bundle";
          };
        };

        devShells.default = pkgs.mkShell {
          packages = with pkgs; [
            nodejs_24
            pnpm
            git
            watchexec
            markdownlint-cli
          ];
          shellHook = ''
            export NODE_ENV=development
            if [ -f package.json ] && grep -q '"packageManager": *"pnpm@' package.json; then
              export COREPACK_ENABLE_DOWNLOAD_PROMPT=0
              corepack enable >/dev/null 2>&1 || true
              corepack prepare --activate >/dev/null 2>&1 || true
            fi
            echo "[devshell] node $(node -v) / pnpm $(pnpm -v 2>/dev/null || echo 'via corepack')"
          '';
        };
      }
    );
}