Check command

pip/commands/check.py

@@ -16,7 +16,7 @@ def setup_logging(self):
     def run(self, options, args):
         all_requirements_met = True
 
-        installed = get_installed_distributions()
+        installed = get_installed_distributions(skip=())
         for dist in installed:
 
             missing_requirements = self.get_missing_requirements(dist, installed)
@@ -41,11 +41,11 @@ def get_missing_requirements(self, dist, installed_dists):
         `installed_dists`.
 
         """
-        installed_names = set(d.project_name for d in installed_dists)
+        installed_names = set(d.project_name.lower() for d in installed_dists)
 
         missing_requirements = set()
         for requirement in dist.requires():
-            if requirement.project_name not in installed_names:
+            if requirement.project_name.lower() not in installed_names:
                 missing_requirements.add(requirement)
                 yield requirement
 

tests/functional/test_check.py

@@ -12,20 +12,40 @@ def test_check_missing_dependency(script):
 
     # deliberately remove the dependency
     script.pip('uninstall', 'ipython', '--yes')
-    
+
     result = script.pip('check', expect_error=True, expect_stderr=True)
 
     assert result.stderr == "ipdb 0.7 requires ipython, which is not installed.\n"
     assert result.returncode == 1
 
 
+def test_check_missing_dependency_normalize_case(script):
+    # this will also install ipython, a dependency
+    script.pip('install', 'pdbpp==0.7.2')
+    script.pip('install', 'bpython==0.13.1')
+    script.pip('install', 'devpi-web==2.2.2')
+    script.pip('install', 'pyramid==1.5.2')
+
+    # deliberately remove some dependencies
+    script.pip('uninstall', 'pygments', '--yes')
+    script.pip('uninstall', 'zope.deprecation', '--yes')
+
+    result = script.pip('check', expect_error=True, expect_stderr=True)
+
+    assert 'pdbpp 0.7.2 requires pygments, which is not installed.' in result.stdout
+    assert 'bpython 0.13.1 requires pygments, which is not installed.' in result.stdout
+    assert 'devpi-web 2.2.2 requires pygments, which is not installed.' in result.stdout
+    assert 'pyramid 1.5.2 requires zope.deprecation, which is not installed.' in result.stdout
+    assert result.returncode == 1
+
+
 def test_check_broken_dependency(script):
     # this will also install a compatible version of jinja2
     script.pip('install', 'flask==0.10.1')
 
     # deliberately change dependency to a version that is too old
     script.pip('install', 'jinja2==2.3')
-    
+
     result = script.pip('check', expect_error=True, expect_stderr=True)
 
     assert result.stderr == "Flask 0.10.1 has requirement Jinja2>=2.4, but you have Jinja2 2.3.\n"