Use os.path.join instead of join_path in Spack package

join_path is not directly importable from spack.util.path.
Use standard Python os.path.join instead for path operations.

Author: sbryngelson

packaging/spack/package.py

@@ -3,10 +3,11 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+import os
+
 from spack_repo.builtin.build_systems.cmake import CMakePackage
 
 from spack.package import *
-from spack.util.path import join_path
 
 
 class Mfc(CMakePackage):
@@ -106,4 +107,4 @@ def setup_build_environment(self, env):
 
         # Make vendored Pyrometheus importable when chemistry is enabled
         if "+chemistry" in self.spec:
-            env.prepend_path("PYTHONPATH", join_path(self.stage.source_path, "pydeps", "pyrometheus"))
+            env.prepend_path("PYTHONPATH", os.path.join(self.stage.source_path, "pydeps", "pyrometheus"))