sage --package list: Add option --exclude

Author: Matthias Koeppe

build/sage_bootstrap/cmdline.py

@@ -207,6 +207,9 @@ def make_parser():
         '--has-file', action='append', default=[], metavar='FILENAME', dest='has_files',
         help=('only include packages that have this file in their metadata directory'
               '(examples: SPKG.rst, spkg-configure.m4, distros/debian.txt)'))
+    parser_list.add_argument(
+        '--exclude', action='append', default=[], metavar='PACKAGE_NAME',
+        help='exclude package from list')
     parser_name = subparsers.add_parser(
         'name', epilog=epilog_name,
         formatter_class=argparse.RawDescriptionHelpFormatter,
@@ -321,7 +324,7 @@ def run():
     if args.subcommand == 'config':
         app.config()
     elif args.subcommand == 'list':
-        app.list_cls(*args.package_class, has_files=args.has_files)
+        app.list_cls(*args.package_class, has_files=args.has_files, exclude=args.exclude)
     elif args.subcommand == 'name':
         app.name(args.tarball_filename)
     elif args.subcommand == 'tarball':

build/sage_bootstrap/expand_class.py

@@ -24,10 +24,13 @@ class PackageClass(object):
     def __init__(self, *package_names_or_classes, **filters):
         self.names = []
         filenames = filters.pop('has_files', [])
+        excluded = filters.pop('exclude', [])
         if filters:
             raise ValueError('filter not supported')
 
         def included_in_filter(pkg):
+            if pkg.name in excluded:
+                return False
             return all(pkg.has_file(filename) for filename in filenames)
         for package_name_or_class in package_names_or_classes:
             if package_name_or_class == ':all:':