[entropy.spm] PortagePlugin: fix package metadata extraction when CHOST file is not available

libraries/entropy/spm/plugins/interfaces/portage_plugin/__init__.py

@@ -852,6 +852,14 @@ class PortagePlugin(SpmPlugin):
                     raise
             data[item] = value
 
+        if not data['chost']:
+            # stupid portage devs and virtual pkgs!
+            # try to cope
+            # WARNING: this can be erroneously set to currently running
+            # system CHOST that could not match the CHOST the package was
+            # built with
+            data['chost'] = self.portage.settings['CHOST']
+
         if not data['spm_repository']: # make sure it's set to None
             data['spm_repository'] = None
 
@@ -3861,7 +3869,7 @@ class PortagePlugin(SpmPlugin):
             },
             'chost': {
                 'path': PortagePlugin.xpak_entries['chost'],
-                'critical': True,
+                'critical': False, # we deal with it afterwards
             },
             'description': {
                 'path': PortagePlugin.xpak_entries['description'],