setup: build .mo files during build step

setup.py

@@ -1,7 +1,10 @@
 #! /usr/bin/env python
 # -*- coding: utf-8 -*-
 
+from setuptools.command.install_lib import install_lib as _install_lib
+from distutils.command.build import build as _build
 from distutils.command.sdist import sdist
+from distutils.cmd import Command
 from setuptools import setup, find_packages
 import os
 import glob
@@ -45,11 +48,44 @@ def get_version():
         result = p.communicate()[0]
         assert p.returncode == 0, 'git returned non-zero'
         new_version = result.split()[0][1:]
-        assert new_version.split('-')[0] == version, '__version__ must match the last git annotated tag'
         version = new_version.replace('-', '.')
     return version
 
 
+class compile_translations(Command):
+    description = 'compile message catalogs to MO files via django compilemessages'
+    user_options = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        try:
+            from django.core.management import call_command
+            for path, dirs, files in os.walk('hobo'):
+                if 'locale' not in dirs:
+                    continue
+                curdir = os.getcwd()
+                os.chdir(os.path.realpath(path))
+                call_command('compilemessages')
+                os.chdir(curdir)
+        except ImportError:
+            sys.stderr.write('!!! Please install Django >= 1.4 to build translations\n')
+
+
+class build(_build):
+    sub_commands = [('compile_translations', None)] + _build.sub_commands
+
+
+class install_lib(_install_lib):
+    def run(self):
+        self.run_command('compile_translations')
+        _install_lib.run(self)
+
+
 setup(
     name='hobo',
     version=get_version(),
@@ -76,6 +112,9 @@ setup(
     ],
     zip_safe=False,
     cmdclass={
-        'sdist': eo_sdist
+        'build': build,
+        'compile_translations': compile_translations,
+        'install_lib': install_lib,
+        'sdist': eo_sdist,
     },
 )