{
  lib,
  stdenv,
  nodejs_latest,
  pnpm_10,
  fetchPnpmDeps,
  pnpmConfigHook,
  git,
  siteUrl,
  sourcePath ? ./..
}: let
  nodejs = nodejs_latest;
  pnpm = pnpm_10;
  
  # Filter source: use cleanSourceFilter as base, but include .git and exclude _site
  filteredSrc = lib.cleanSourceWith {
    src = sourcePath;
    filter = path: type:
      let
        baseName = baseNameOf path;
        # Always include .git directory
        isGit = baseName == ".git" || lib.hasInfix "/.git/" path || lib.hasSuffix "/.git" path;
      in
        isGit || (
          # Apply base cleanSourceFilter
          lib.cleanSourceFilter path type &&
          # Additional exclusions
          baseName != "_site" &&
          baseName != "node_modules"
        );
  };
in
  stdenv.mkDerivation (finalAttrs: {
    pname = "volpe";
    version = "1.0.0";

    src = filteredSrc;

    nativeBuildInputs = [
      nodejs
      pnpm
      pnpmConfigHook
      git
    ];

    # fetchPnpmDeps creates the offline store
    # Use clean source (excludes .git, _site, node_modules)
    pnpmDeps = fetchPnpmDeps {
      inherit (finalAttrs) pname version;
      src = lib.cleanSource sourcePath;
      hash = "sha256-rN8P6g/Wuug+fv0rm/qbKN01NgcbpgEQmhDFe2X42uA=";
      fetcherVersion = 3; # pnpm store version
    };

    buildPhase = ''
      runHook preBuild

      SITE_URL="${siteUrl}" pnpm build

      runHook postBuild
    '';

    installPhase = ''
      runHook preInstall

      mkdir -p $out
      cp -r _site/* $out/

      runHook postInstall
    '';
  })