PYTHONPATH : python patches methods for its extensions

lib/spack/spack/build_environment.py

@@ -282,9 +282,11 @@ def setup_package(pkg):
     for mod in modules:
         set_module_variables_for_package(pkg, mod)
 
-    # Allow dependencies to set up environment as well.
+    # Allow dependencies to modify the module
     for dependency_spec in pkg.spec.traverse(root=False):
         dependency_spec.package.modify_module(pkg.module, dependency_spec, pkg.spec)
+    # Allow dependencies to set up environment as well
+    for dependency_spec in pkg.spec.traverse(root=False):
         dependency_spec.package.setup_dependent_environment(env, pkg.spec)
     # TODO : implement validation
     #validate(env)

lib/spack/spack/cmd/uninstall.py

@@ -79,7 +79,7 @@ def uninstall(parser, args):
                 try:
                     # should work if package is known to spack
                     pkgs.append(s.package)
-                except spack.repository.UnknownPackageError, e:
+                except spack.repository.UnknownPackageError as e:
                     # The package.py file has gone away -- but still
                     # want to uninstall.
                     spack.Package(s).do_uninstall(force=True)
@@ -94,11 +94,11 @@ def num_installed_deps(pkg):
         for pkg in pkgs:
             try:
                 pkg.do_uninstall(force=args.force)
-            except PackageStillNeededError, e:
+            except PackageStillNeededError as e:
                 tty.error("Will not uninstall %s" % e.spec.format("$_$@$%@$#", color=True))
-                print
-                print "The following packages depend on it:"
+                print()
+                print("The following packages depend on it:")
                 display_specs(e.dependents, long=True)
-                print
-                print "You can use spack uninstall -f to force this action."
+                print()
+                print("You can use spack uninstall -f to force this action.")
                 sys.exit(1)

lib/spack/spack/directory_layout.py

@@ -150,7 +150,7 @@ def remove_install_directory(self, spec):
         if os.path.exists(path):
             try:
                 shutil.rmtree(path)
-            except exceptions.OSError, e:
+            except exceptions.OSError as e:
                 raise RemoveFailedError(spec, path, e)
 
         path = os.path.dirname(path)

lib/spack/spack/modules.py

@@ -119,13 +119,13 @@ def __init__(cls, name, bases, dict):
                 module_types[cls.name] = cls
 
     def __init__(self, spec=None):
+        self.spec = spec
+        self.pkg = spec.package  # Just stored for convenience
+
         # category in the modules system
         # TODO: come up with smarter category names.
         self.category = "spack"
 
-        self.spec = spec
-        self.pkg = spec.package  # Just stored for convenience
-
         # short description default is just the package + version
         # packages can provide this optional attribute
         self.short_description = spec.format("$_ $@")
@@ -161,6 +161,12 @@ def write(self):
 
         # Environment modifications guessed by inspecting the installation prefix
         env = inspect_path(self.spec.prefix)
+
+        # Let the extendee modify their extensions before asking for package-specific modifications
+        for extendee in self.pkg.extendees:
+            extendee_spec = self.spec[extendee]
+            extendee_spec.package.modify_module(self.pkg, extendee_spec, self.spec)
+
         # Package-specific environment modifications
         self.spec.package.setup_environment(env)
         # TODO : implement site-specific modifications and filters

lib/spack/spack/package.py

@@ -1261,16 +1261,6 @@ def rpath_args(self):
         """Get the rpath args as a string, with -Wl,-rpath, for each element."""
         return " ".join("-Wl,-rpath,%s" % p for p in self.rpath)
 
-
-class PythonExtension(Package):
-    def setup_dependent_environment(self, env, dependent_spec):
-        pass
-
-    def setup_environment(self, env):
-        site_packages = glob.glob(join_path(self.spec.prefix.lib, "python*/site-packages"))
-        if site_packages:
-            env.prepend_path('PYTHONPATH', site_packages[0])
-
 def validate_package_url(url_string):
     """Determine whether spack can handle a particular URL or not."""
     url = urlparse(url_string)