require '-tags exp' for hybrid / server builds

v2/cmd/wails/internal/commands/build/build.go

@@ -146,6 +146,13 @@ func AddBuildSubcommand(app *clir.Cli, w io.Writer) {
 			}
 		}
 
+		// Validate experimental
+		if slicer.String([]string{"hybrid", "server"}).Contains(outputType) {
+			if !slicer.String(userTags).Contains("exp") {
+				return fmt.Errorf("output type '%s' requires the '-tags exp'", outputType)
+			}
+		}
+
 		// Webview2 installer strategy (download by default)
 		wv2rtstrategy := ""
 		webview2 = strings.ToLower(webview2)

v2/internal/app/app_hybrid_server.go

@@ -1,5 +1,5 @@
-//go:build hybrid || server
-// +build hybrid server
+//go:build (exp && hybrid) || (exp && server)
+// +build exp,hybrid exp,server
 
 package app
 

v2/internal/frontend/hybrid/hybrid.go

@@ -1,5 +1,5 @@
-//go:build hybrid
-// +build hybrid
+//go:build exp && hybrid
+// +build exp,hybrid
 
 package hybrid
 

v2/internal/frontend/hybrid/server.go

@@ -1,5 +1,5 @@
-//go:build server
-// +build server
+//go:build exp && server
+// +build exp,server
 
 package hybrid