node/shell.nix

{
  pkgs ? import ./tools/nix/pkgs.nix { },

  # Optional build tools / config
  ccache ? pkgs.ccache,
  loadJSBuiltinsDynamically ? true, # Load `lib/**.js` from disk instead of embedding
  ninja ? pkgs.ninja,
  extraConfigFlags ? [
    "--debug-node"
  ],
  useSeparateDerivationForV8 ? false, # to help CI better managed its binary cache, not recommended outside of CI usage.

  # Build options
  icu ? pkgs.icu,
  withAmaro ? true,
  withLief ? true,
  withQuic ? false,
  withSQLite ? true,
  withFFI ? true,
  withSSL ? true,
  withTemporal ? true,
  withPerfetto ? false,
  sharedLibDeps ? (
    import ./tools/nix/sharedLibDeps.nix {
      inherit
        pkgs
        withLief
        withQuic
        withSQLite
        withFFI
        withSSL
        withPerfetto
        withTemporal
        ;
    }
  ),

  # PKCS#11 fixture for `test/parallel/test-crypto-key-store-pkcs11.js`. `true`
  # builds the one from tools/nix/pkcs11.nix against the OpenSSL being linked,
  # which needs a shared OpenSSL >= 3 and a platform nixpkgs ships
  # pkcs11-provider for. `false` and `null` disable it, any other value is used
  # as the fixture itself.
  pkcs11 ? false,

  # dev tools (not needed to build Node.js, useful to maintain it)
  ncu-path ? null, # Provide this if you want to use a local version of NCU
  devTools ? import ./tools/nix/devTools.nix { inherit pkgs ncu-path; },
  benchmarkTools ? import ./tools/nix/benchmarkTools.nix { inherit pkgs; },
}:

assert pkgs.lib.assertMsg (
  withTemporal || !(builtins.hasAttr "temporal_capi" sharedLibDeps)
) "`sharedLibDeps` must not contain `temporal_capi` when `withTemporal` is false";
assert pkgs.lib.assertMsg (
  withPerfetto || !(builtins.hasAttr "perfetto" sharedLibDeps)
) "`sharedLibDeps` must not contain `perfetto` when `withPerfetto` is false";

let
  useSharedICU = if builtins.isString icu then icu == "system" else icu != null;
  needsRustCompiler = withTemporal && !(builtins.hasAttr "temporal_capi" sharedLibDeps);

  sharedV8Deps = builtins.filter (depName: builtins.hasAttr depName sharedLibDeps) ([
    "abseil"
    "highway"
    "perfetto"
    "simdutf"
    "temporal_capi"
  ]);

  nativeBuildInputs =
    pkgs.nodejs-slim_latest.nativeBuildInputs
    ++ pkgs.lib.optionals needsRustCompiler [
      pkgs.cargo
      pkgs.rustc
    ];
  buildInputs =
    pkgs.lib.optional useSharedICU icu ++ builtins.map (depName: sharedLibDeps.${depName}) sharedV8Deps;

  # Put here only the configure flags that affect the V8 build
  configureFlags = [
    (
      if icu == null then
        "--without-intl"
      else
        "--with-intl=${if useSharedICU then "system" else icu}-icu"
    )
    "--v8-${if withTemporal then "enable" else "disable"}-temporal-support"
  ]
  ++ builtins.map (depName: "--shared-${depName}") sharedV8Deps
  ++ pkgs.lib.optional withPerfetto "--with-perfetto";
in
pkgs.mkShell {
  inherit nativeBuildInputs;

  # `_FORTIFY_SOURCE` requires optimization, which debug builds do not have.
  hardeningDisable = [ "fortify" ];

  buildInputs =
    builtins.attrValues sharedLibDeps
    ++ buildInputs
    ++ pkgs.lib.optional (useSeparateDerivationForV8 != false) (
      if useSeparateDerivationForV8 == true then
        let
          sharedLibsToMock = pkgs.callPackage ./tools/nix/non-v8-deps-mock.nix { };
        in
        pkgs.callPackage ./tools/nix/v8.nix {
          inherit nativeBuildInputs icu;

          configureFlags = configureFlags ++ sharedLibsToMock.configureFlags ++ [ "--ninja" ];
          buildInputs = buildInputs ++ [ sharedLibsToMock ];
        }
      else
        useSeparateDerivationForV8
    );

  packages = devTools ++ benchmarkTools ++ pkgs.lib.optional (ccache != null) ccache;

  shellHook = pkgs.lib.optionalString (ccache != null) ''
    export CC="${pkgs.lib.getExe ccache} $CC"
    export CXX="${pkgs.lib.getExe ccache} $CXX"
  '';

  env = {
    BUILD_WITH = if (ninja != null) then "ninja" else "make";
    NINJA = pkgs.lib.optionalString (ninja != null) "${pkgs.lib.getExe ninja}";
    CONFIG_FLAGS = builtins.toString (
      configureFlags
      ++ extraConfigFlags
      ++ pkgs.lib.optional (ninja != null) "--ninja"
      ++ pkgs.lib.optional (!withAmaro) "--without-amaro"
      ++ pkgs.lib.optional (!withLief) "--without-lief"
      ++ pkgs.lib.optional withQuic "--experimental-quic"
      ++ pkgs.lib.optional (!withSQLite) "--without-sqlite"
      ++ pkgs.lib.optional (!withFFI) "--without-ffi"
      ++ pkgs.lib.optional (!withSSL) "--without-ssl"
      ++ pkgs.lib.optional loadJSBuiltinsDynamically "--node-builtin-modules-path=${builtins.toString ./.}"
      ++ pkgs.lib.optional (useSeparateDerivationForV8 != false) "--without-bundled-v8"
      ++ builtins.map (name: "--shared-${name}") (
        builtins.attrNames (
          if (useSeparateDerivationForV8 != false) then
            builtins.removeAttrs sharedLibDeps sharedV8Deps
          else
            sharedLibDeps
        )
      )
    );
  }
  // (
    let
      ruff = pkgs.lib.lists.findFirst (p: p.meta.mainProgram == "ruff") null devTools;
    in
    pkgs.lib.optionalAttrs (ruff != null) {
      RUFF = pkgs.lib.getExe ruff;
    }
  )
  // (
    let
      yamllint = pkgs.lib.lists.findFirst (p: p.meta.mainProgram == "yamllint") null devTools;
    in
    pkgs.lib.optionalAttrs (yamllint != null) {
      YAMLLINT = pkgs.lib.getExe yamllint;
    }
  )
  // (
    let
      treefmt = pkgs.lib.lists.findFirst (p: p.meta.mainProgram == "treefmt") null devTools;
    in
    pkgs.lib.optionalAttrs (treefmt != null) {
      NIX_LINTER = pkgs.lib.getExe treefmt;
    }
  )
  // pkgs.lib.optionalAttrs (!withSQLite) {
    NOSQLITE = "1";
  }
  // pkgs.lib.optionalAttrs (withPerfetto) {
    TRACE_PROCESSOR_SHELL_PATH = "${pkgs.perfetto.tools}/bin/trace_processor_shell";
  }
  // pkgs.lib.optionalAttrs (pkcs11 != false && pkcs11 != null) (
    let
      pkcs11' =
        if pkcs11 == true then
          import ./tools/nix/pkcs11.nix {
            inherit pkgs;
            # Building pkcs11-provider without a shared OpenSSL is not supported.
            inherit (sharedLibDeps) openssl;
          }
        else
          pkcs11;
    in
    {
      NODE_TEST_PKCS11_OPENSSL_CONF = pkcs11'.opensslConf;
      NODE_TEST_PKCS11_PIN = pkcs11'.softhsmDir.pin;
      NODE_TEST_PKCS11_SOFTHSM_DIR = pkcs11'.softhsmDir;
    }
  );
}