nciopenmpi: use env.append_flags()

* Use env.append_flags() instead of env.append_path().
* Thanks to Aidan Heerdegen for finding env.append_flags().

packages/nci-openmpi/package.py

@@ -34,8 +34,12 @@ def setup_run_environment(self, env):
         elif self.spec.satisfies("%gcc"):
             finc_path = join_path(self.prefix.include, "GNU")
             flib_path = join_path(self.prefix.lib, "GNU")
-        env.append_path("OMPI_FCFLAGS", "-I" + finc_path)
-        env.append_path("OMPI_LDFLAGS", "-L" + self.prefix.lib + " -L" + flib_path)
+        import os
+        print(os.environ)
+        env.append_flags("OMPI_FCFLAGS", "-I" + finc_path)
+        env.append_flags("OMPI_LDFLAGS", "-L" + self.prefix.lib)
+        env.append_flags("OMPI_LDFLAGS", "-L" + flib_path)
+        print(os.environ)
 
     # The following is reproduced from the builtin openmpi spack package
     def setup_dependent_build_environment(self, env, dependent_spec):