Enable -D lua-vanilla for Lua tests, removing luarocks dependencies

.github/workflows/main.yml

@@ -38,26 +38,13 @@ jobs:
 
       - name: Setup Lua
         if: matrix.target == 'lua'
-        # Note: -D lua-vanilla cannot be used here because hxcoro unconditionally requires luv:
-        # 1. The generated event loop calls luv.run() at startup to drive async tasks.
-        # 2. Sys.getenv (inside #if sys, which is true for Lua) reads HXCORO_DISPATCHER at
-        #    startup; with -D lua-vanilla, any Sys call throws NotImplementedException.
-        # Therefore the full luarocks dependency set (luv, lrexlib-pcre2, luautf8, bit32) is needed.
         shell: bash
         run: |
           if [[ "$RUNNER_OS" == "Linux" ]]; then
-            sudo apt-get install -y lua5.4 lua5.4-dev luarocks libpcre2-dev
+            sudo apt-get install -y lua5.4
             sudo update-alternatives --set lua-interpreter /usr/bin/lua5.4
-            sudo luarocks --lua-version 5.4 install luv
-            sudo luarocks --lua-version 5.4 install lrexlib-pcre2
-            sudo luarocks --lua-version 5.4 install luautf8
-            sudo luarocks --lua-version 5.4 install bit32
           elif [[ "$RUNNER_OS" == "macOS" ]]; then
-            brew install lua luarocks pcre2
-            luarocks install luv
-            luarocks install lrexlib-pcre2
-            luarocks install luautf8
-            luarocks install bit32
+            brew install lua
           fi
 
       - name: Setup haxelib

callstack-tests/build-lua.hxml

@@ -1,3 +1,4 @@
 build-base.hxml
+-D lua-vanilla
 --lua bin/test.lua
 --cmd lua bin/test.lua

src/hxcoro/concurrent/BackOff.hx

@@ -10,6 +10,8 @@ class BackOff {
 		eval.vm.NativeThread.yield();
 		#elseif jvm
 		// jvm seems to do best without anything here
+		#elseif lua_vanilla
+		// Sys.sleep is not available in -D lua-vanilla; busy-wait without yielding
 		#elseif sys
 		Sys.sleep(1 / 0xFFFFFFFFu32);
 		#else

src/hxcoro/schedulers/EventLoopScheduler.hx

@@ -35,8 +35,14 @@ class HeapScheduler implements IScheduler {
 		return event;
     }
 
-	public function now() {
+	public function now():Int64 {
+		#if lua_vanilla
+		// Timer.stamp() calls Sys.time() which is not available in -D lua-vanilla.
+		// Use lua.Os.clock() (CPU time, seconds) as a substitute.
+		return haxe.Int64.ofInt(Std.int(lua.Os.clock() * 1000));
+		#else
 		return Timer.milliseconds();
+		#end
 	}
 
 }

tests/build-lua.hxml

@@ -1,3 +1,4 @@
 build-base.hxml
+-D lua-vanilla
 --lua bin/coro.lua
 --cmd lua bin/coro.lua

tests/src/Main.hx

@@ -1,7 +1,7 @@
 import hxcoro.run.Setup;
 
 function main() {
-	#if sys
+	#if (sys && !lua_vanilla)
 	switch (Sys.getEnv("HXCORO_DISPATCHER")) {
 		case "trampoline":
 			Sys.println("Using trampoline dispatcher");
@@ -14,7 +14,7 @@ function main() {
 		case _:
 			Sys.println("Using default dispatcher");
 	}
-	#end
+	#end // (sys && !lua_vanilla)
 
 	final runner = new atest.Runner();