def get_env_var(self, var):
"""Returns one of the predefined env vars DEPEND, RDEPEND, SRC_URI,...."""
mytree = vartree
if not self.is_installed():
# if not self.is_installed():
mytree = porttree
r = mytree.dbapi.aux_get(self._cpv,[var])
if not r:
raise FatalError("Could not find the package tree")
