patch: fmt, os, runtime, syscall, time

internal/lib/runtime/runtime.go

@@ -20,3 +20,17 @@ package runtime
 import (
 	_ "unsafe"
 )
+
+// GOROOT returns the root of the Go tree. It uses the
+// GOROOT environment variable, if set at process start,
+// or else the root used during the Go build.
+func GOROOT() string {
+	/*
+		s := gogetenv("GOROOT")
+		if s != "" {
+			return s
+		}
+		return defaultGOROOT
+	*/
+	panic("todo: GOROOT")
+}