diff --git a/lib/spack/spack/environment/environment.py b/lib/spack/spack/environment/environment.py
index 9f03cac1e3d..c4e4ed0713d 100644
--- a/lib/spack/spack/environment/environment.py
+++ b/lib/spack/spack/environment/environment.py
@@ -688,12 +688,12 @@ def regenerate(self, concretized_root_specs, force=False):
             return
 
         print(new_root)
-#        print(
-#            [
-#                (s, os.stat(os.path.join(os.path.dirname(new_root), s)).st_mtime)
-#                for s in os.listdir(os.path.dirname(new_root))
-#            ]
-#        )
+        #        print(
+        #            [
+        #                (s, os.stat(os.path.join(os.path.dirname(new_root), s)).st_mtime)
+        #                for s in os.listdir(os.path.dirname(new_root))
+        #            ]
+        #        )
         print(specs)
         if update_method == "exchange" and os.path.isdir(new_root):
             # If new_root is the newest thing in its directory, no need to update