deps: Add executable path to 'mopidy deps' output

docs/changelog.rst

@@ -61,6 +61,10 @@ v0.20.0 (UNRELEASED)
   to set the log level for all loggers to the lowest possible value, including
   log records at levels lover than ``DEBUG`` too.
 
+- Add path to the current ``mopidy`` executable to the output of ``mopidy
+  deps``. This make it easier to see that a user is using pip-installed Mopidy
+  instead of APT-installed Mopidy without asking for ``which mopidy`` output.
+
 **Configuration**
 
 - Add support for the log level value ``all`` to the loglevels configurations.

mopidy/utils/deps.py

@@ -3,6 +3,7 @@ from __future__ import absolute_import, unicode_literals
 import functools
 import os
 import platform
+import sys
 
 import pygst
 pygst.require('0.10')
@@ -24,6 +25,7 @@ def format_dependency_list(adapters=None):
             for dist_name in dist_names]
 
         adapters = [
+            executable_info,
             platform_info,
             python_info,
             functools.partial(pkg_info, 'Mopidy', True)
@@ -63,6 +65,13 @@ def _format_dependency(dep_info):
     return '\n'.join(lines)
 
 
+def executable_info():
+    return {
+        'name': 'Executable',
+        'version': sys.argv[0],
+    }
+
+
 def platform_info():
     return {
         'name': 'Platform',

tests/utils/test_deps.py

@@ -1,6 +1,7 @@
 from __future__ import absolute_import, unicode_literals
 
 import platform
+import sys
 import unittest
 
 import mock
@@ -46,6 +47,12 @@ class DepsTest(unittest.TestCase):
         self.assertIn('  pylast: 0.5', result)
         self.assertIn('    setuptools: 0.6', result)
 
+    def test_executable_info(self):
+        result = deps.executable_info()
+
+        self.assertEqual('Executable', result['name'])
+        self.assertIn(sys.argv[0], result['version'])
+
     def test_platform_info(self):
         result = deps.platform_info()