Fix Gemfile.lock issue

lib/ruby_wasm/cli.rb

@@ -310,7 +310,10 @@ def self.bundled_patches_path
 
     def derive_packager(options)
       __skip__ = definition = nil
-      __skip__ = if defined?(Bundler) && !options[:disable_gems]
+      features = RubyWasm::FeatureSet.derive_from_env
+      # The head ruby & dynamic linking uses "bundle" command to build gems instead of in-process integration.
+      use_in_process_gem_building = !(options[:ruby_version] == "head" && features.support_dynamic_linking?)
+      __skip__ = if defined?(Bundler) && !options[:disable_gems] && use_in_process_gem_building
         begin
           # Silence Bundler UI if --print-ruby-cache-key is specified not to bother the JSON output.
           level = options[:print_ruby_cache_key] ? :silent : Bundler.ui.level
@@ -324,7 +327,7 @@ def derive_packager(options)
       RubyWasm.logger.info "Using Gemfile: #{definition.gemfiles.map(&:to_s).join(", ")}" if definition
       RubyWasm::Packager.new(
         root, build_config(options), definition,
-        features: RubyWasm::FeatureSet.derive_from_env
+        features: features,
       )
     end
 

lib/ruby_wasm/packager/core.rb

@@ -19,7 +19,6 @@ def build(executor, options)
   def build_strategy
     @build_strategy ||=
       begin
-        has_exts = @packager.specs.any? { |spec| spec.extensions.any? }
         if @packager.features.support_dynamic_linking?
           DynamicLinking.new(@packager)
         else
@@ -59,14 +58,6 @@ def specs_with_extensions
       end
     end
 
-    def wasi_exec_model
-      # TODO: Detect WASI exec-model from binary exports (_start or _initialize)
-      use_js_gem = @packager.specs.any? do |spec|
-        spec.name == "js"
-      end
-      use_js_gem ? "reactor" : "command"
-    end
-
     def with_unbundled_env(&block)
       __skip__ = if defined?(Bundler)
         Bundler.with_unbundled_env(&block)
@@ -138,12 +129,16 @@ def _link_gem_exts(executor, build, ruby_root, gem_home, module_bytes)
         wasi_sdk_path = toolchain.wasi_sdk_path
         libraries << File.join(wasi_sdk_path, "share/wasi-sysroot/lib/wasm32-wasi", lib)
       end
-      wasi_adapter = RubyWasm::Packager::ComponentAdapter.wasi_snapshot_preview1(wasi_exec_model)
-      adapters = [wasi_adapter]
       dl_openable_libs = []
       dl_openable_libs << [File.dirname(ruby_root), Dir.glob(File.join(ruby_root, "lib", "ruby", "**", "*.so"))]
       dl_openable_libs << [gem_home, Dir.glob(File.join(gem_home, "**", "*.so"))]
 
+      has_js_so = dl_openable_libs.any? do |root, libs|
+        libs.any? { |lib| lib.end_with?("/js.so") }
+      end
+      wasi_adapter = RubyWasm::Packager::ComponentAdapter.wasi_snapshot_preview1(has_js_so ? "reactor" : "command")
+      adapters = [wasi_adapter]
+
       linker = RubyWasmExt::ComponentLink.new
       linker.use_built_in_libdl(true)
       linker.stub_missing_functions(false)
@@ -198,6 +193,8 @@ def _build_gem_exts(executor, build, gem_home)
         "BUNDLE_APP_CONFIG" => File.join(".bundle", target_triplet),
         "BUNDLE_PATH" => local_path,
         "BUNDLE_WITHOUT" => "build",
+        # Do not auto-switch bundler version by Gemfile.lock
+        "BUNDLE_VERSION" => "system",
         # FIXME: BUNDLE_PATH is set as a installation destination here, but
         # it is also used as a source of gems to be loaded by RubyGems itself.
         # RubyGems loads "psych" gem and if Gemfile includes "psych" gem,
@@ -347,6 +344,14 @@ def build_gem_exts(executor, gem_home)
       # No-op because we already built extensions as part of the Ruby build
     end
 
+    def wasi_exec_model
+      # TODO: Detect WASI exec-model from binary exports (_start or _initialize)
+      use_js_gem = @packager.specs.any? do |spec|
+        spec.name == "js"
+      end
+      use_js_gem ? "reactor" : "command"
+    end
+
     def link_gem_exts(executor, ruby_root, gem_home, module_bytes)
       return module_bytes unless @packager.features.support_component_model?