--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/piecrust/commands/builtin/plugins.py	Sun Mar 22 22:20:18 2015 -0700
@@ -0,0 +1,57 @@
+import logging
+from piecrust.commands.base import ChefCommand
+
+
+logger = logging.getLogger(__name__)
+
+
+class PluginsCommand(ChefCommand):
+    def __init__(self):
+        super(PluginsCommand, self).__init__()
+        self.name = 'plugins'
+        self.description = "Manage the plugins for the current website."
+
+    def setupParser(self, parser, app):
+        # Don't setup anything if this is a null app
+        # (for when `chef` is run from outside a website)
+        if app.root_dir is None:
+            return
+
+        subparsers = parser.add_subparsers()
+        p = subparsers.add_parser(
+                'list',
+                help="Lists the plugins installed in the current website.")
+        p.add_argument(
+                '-a', '--all',
+                action='store_true',
+                help=("Also list all the available plugins for the "
+                      "current environment. The installed one will have an "
+                      "asterix (*)."))
+        p.set_defaults(sub_func=self._listPlugins)
+
+    def checkedRun(self, ctx):
+        if not hasattr(ctx.args, 'sub_func'):
+            ctx.parser.parse_args(['plugins', '--help'])
+            return
+        ctx.args.sub_func(ctx)
+
+    def _listPlugins(self, ctx):
+        names = {}
+        installed_suffix = ''
+        if ctx.args.all:
+            import pip
+            prefix = 'PieCrust-'
+            installed_packages = pip.get_installed_distributions()
+            for plugin in installed_packages:
+                if not plugin.project_name.startswith(prefix):
+                    continue
+                name = plugin.project_name[len(prefix):]
+                names[name] = False
+            installed_suffix = '*'
+
+        for plugin in ctx.app.plugin_loader.plugins:
+            names[plugin.name] = True
+
+        for name, inst in names.items():
+            logger.info("%s%s" % (name, installed_suffix if inst else ''))
+