uninstall from requirements file

pip.py

@@ -439,6 +439,14 @@ class UninstallCommand(Command):
 
     def __init__(self):
         super(UninstallCommand, self).__init__()
+        self.parser.add_option(
+            '-r', '--requirement',
+            dest='requirements',
+            action='append',
+            default=[],
+            metavar='FILENAME',
+            help='Uninstall all the packages listed in the given requirements file.  '
+            'This option can be used multiple times.')
         self.parser.add_option(
             '-y', '--yes',
             dest='yes',
@@ -453,6 +461,9 @@ class UninstallCommand(Command):
         for name in args:
             requirement_set.add_requirement(
                 InstallRequirement.from_line(name))
+        for filename in options.requirements:
+            for req in parse_requirements(filename):
+                requirement_set.add_requirement(req)
         requirement_set.uninstall(auto_confirm=options.yes)
 
 UninstallCommand()
@@ -3429,7 +3440,7 @@ def get_file_content(url, comes_from=None):
     f.close()
     return url, content
 
-def parse_requirements(filename, finder, comes_from=None):
+def parse_requirements(filename, finder=None, comes_from=None):
     skip_match = None
     if os.environ.get('PIP_SKIP_REQUIREMENTS_REGEX'):
         skip_match = re.compile(os.environ['PIP_SKIP_REQUIREMENTS_REGEX'])
@@ -3457,7 +3468,7 @@ def parse_requirements(filename, finder, comes_from=None):
             # No longer used, but previously these were used in
             # requirement files, so we'll ignore.
             pass
-        elif line.startswith('-f') or line.startswith('--find-links'):
+        elif finder and line.startswith('-f') or line.startswith('--find-links'):
             if line.startswith('-f'):
                 line = line[2:].strip()
             else:

tests/test_uninstall.txt

@@ -1,6 +1,6 @@
 Basic setup::
 
-    >>> from __main__ import here, reset_env, run_pip, pyversion, lib_py, get_env, diff_states
+    >>> from __main__ import here, reset_env, run_pip, pyversion, lib_py, get_env, diff_states, write_file
     >>> easy_install_pth = lib_py + 'site-packages/easy-install.pth'
 
 Simple install and uninstall::
@@ -41,3 +41,15 @@ Uninstall an editable installation from svn::
     >>> diff_states(result.files_before, result2.files_after).values()
     [{}, {}, {}]
 
+Uninstall from a requirements file::
+
+    >>> reset_env()
+    >>> write_file('test-req.txt', '''\
+    ... -e svn+http://svn.colorstudy.com/INITools/trunk#egg=initools-dev
+    ... # and something else to test out:
+    ... simplejson<=1.7.4
+    ... ''')
+    >>> result = run_pip('install', '-r', 'test-req.txt')
+    >>> result2 = run_pip('uninstall', '-r', 'test-req.txt', '-y')
+    >>> diff_states(result.files_before, result2.files_after, ignore_keys=['build']).values()
+    [{}, {}, {}]