Support excluding plugins from indico-plugins pkg

currently excluded:

- livesync_debug (useless/example)
- search_invenio (broken)
- vc_dummy (useless/example)

_meta/extras.yaml

@@ -1,2 +0,0 @@
-# depends on pyxrootd which needs to be installed manually
-indico-plugin-storage-xrootd: xrootd

_meta/meta.yaml

@@ -0,0 +1,8 @@
+extras:
+  # depends on pyxrootd which needs to be installed manually
+  indico-plugin-storage-xrootd: xrootd
+
+skip:
+  - indico-plugin-livesync-debug
+  - indico-plugin-search-invenio
+  - indico-plugin-vc-dummy

_meta/setup.py

@@ -26,7 +26,6 @@ plugins_require = [
     'indico-plugin-importer==1.0.dev0',
     'indico-plugin-importer-invenio==1.0.dev0',
     'indico-plugin-livesync==1.0.dev0',
-    'indico-plugin-livesync-debug==1.0.dev0',
     'indico-plugin-livesync-invenio==1.0.dev0',
     'indico-plugin-payment-manual==1.0.dev0',
     'indico-plugin-payment-paypal==1.0.dev0',
@@ -34,8 +33,6 @@ plugins_require = [
     'indico-plugin-previewer-code==1.0.dev0',
     'indico-plugin-previewer-jupyter==1.0.dev0',
     'indico-plugin-search==1.0.dev0',
-    'indico-plugin-search-invenio==1.0.dev0',
-    'indico-plugin-vc-dummy==1.0.dev0',
     'indico-plugin-vc-vidyo==1.0.dev0',
 ]
 extras_require = {

update-meta.py

@@ -47,16 +47,17 @@ def _find_plugins():
         yield name.group(2), version.group(2)
 
 
-def _get_extras():
+def _get_config():
+    rv = {'extras': {}, 'skip': []}
     try:
-        f = open('_meta/extras.yaml')
+        f = open('_meta/meta.yaml')
     except IOError as exc:
         if exc.errno != errno.ENOENT:
             raise
-        return {}
     else:
         with f:
-            return yaml.safe_load(f)
+            rv.update(yaml.safe_load(f))
+    return rv
 
 
 def _update_meta(data):
@@ -78,13 +79,15 @@ def cli():
         click.secho('Could not find meta package (_meta subdir)', fg='red', bold=True)
         sys.exit(1)
 
-    extras = _get_extras()
+    config = _get_config()
     plugins_require = []
     extras_require = defaultdict(list)
     for name, version in sorted(_find_plugins()):
+        if name in config['skip']:
+            continue
         pkgspec = '{}=={}'.format(name, version)
-        if name in extras:
-            extras_require[extras[name]].append(pkgspec)
+        if name in config['extras']:
+            extras_require[config['extras'][name]].append(pkgspec)
         else:
             plugins_require.append(pkgspec)