new tracing system

internal/testenv/temp_darwin.go

@@ -0,0 +1,21 @@
+//go:build darwin
+
+package testenv
+
+import (
+	"os"
+	"testing"
+)
+
+// macos temp directory names are too long
+// https://github.com/golang/go/issues/62614
+func tempDir(t testing.TB) string {
+	dir, err := os.MkdirTemp("", "test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		os.RemoveAll(dir)
+	})
+	return dir
+}