deps: Look up deps in pkg_resources

mopidy/utils/deps.py

@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+import functools
 import os
 import platform
 import sys
@@ -8,6 +9,7 @@ import pygst
 pygst.require('0.10')
 import gst
 
+import pkg_resources
 import pykka
 
 from . import formatting
@@ -37,8 +39,17 @@ def format_dependency_list(adapters=None):
             serial_info,
             cherrypy_info,
             ws4py_info,
+            functools.partial(pkg_info, 'Mopidy', True),
         ]
 
+        dist_names = set([
+            ep.dist.project_name for ep in
+            pkg_resources.iter_entry_points('mopidy.ext')
+            if ep.dist.project_name != 'Mopidy'])
+        for dist_name in dist_names:
+            adapters.append(
+                functools.partial(pkg_info, dist_name))
+
     return '\n'.join([_format_dependency(a()) for a in adapters])
 
 
@@ -83,6 +94,21 @@ def python_info():
     }
 
 
+def pkg_info(project_name=None, include_extras=False):
+    if project_name is None:
+        project_name = 'Mopidy'
+    distribution = pkg_resources.get_distribution(project_name)
+    extras = include_extras and distribution.extras or []
+    dependencies = [
+        pkg_info(d) for d in distribution.requires(extras)]
+    return {
+        'name': distribution.project_name,
+        'version': distribution.version,
+        'path': distribution.location,
+        'dependencies': dependencies,
+    }
+
+
 def gstreamer_info():
     other = []
     other.append('Python wrapper: gst-python %s' % (

tests/utils/deps_test.py

@@ -5,6 +5,8 @@ import platform
 import pygst
 pygst.require('0.10')
 import gst
+
+import mock
 import pykka
 
 try:
@@ -156,3 +158,40 @@ class DepsTest(unittest.TestCase):
         self.assertEquals('ws4py', result['name'])
         self.assertEquals(ws4py.__version__, result['version'])
         self.assertIn('ws4py', result['path'])
+
+    @mock.patch('pkg_resources.get_distribution')
+    def test_pkg_info(self, get_distribution_mock):
+        dist_mopidy = mock.Mock()
+        dist_mopidy.project_name = 'Mopidy'
+        dist_mopidy.version = '0.13'
+        dist_mopidy.location = '/tmp/example/mopidy'
+        dist_mopidy.requires.return_value = ['Pykka']
+
+        dist_pykka = mock.Mock()
+        dist_pykka.project_name = 'Pykka'
+        dist_pykka.version = '1.1'
+        dist_pykka.location = '/tmp/example/pykka'
+        dist_pykka.requires.return_value = ['setuptools']
+
+        dist_setuptools = mock.Mock()
+        dist_setuptools.project_name = 'setuptools'
+        dist_setuptools.version = '0.6'
+        dist_setuptools.location = '/tmp/example/setuptools'
+        dist_setuptools.requires.return_value = []
+
+        get_distribution_mock.side_effect = [
+            dist_mopidy, dist_pykka, dist_setuptools]
+
+        result = deps.pkg_info()
+
+        self.assertEquals('Mopidy', result['name'])
+        self.assertEquals('0.13', result['version'])
+        self.assertIn('mopidy', result['path'])
+
+        dep_info_pykka = result['dependencies'][0]
+        self.assertEquals('Pykka', dep_info_pykka['name'])
+        self.assertEquals('1.1', dep_info_pykka['version'])
+
+        dep_info_setuptools = dep_info_pykka['dependencies'][0]
+        self.assertEquals('setuptools', dep_info_setuptools['name'])
+        self.assertEquals('0.6', dep_info_setuptools['version'])