Add way for user to specify additional plugin directories

2 files changed, 12 insertions, 0 deletions

diff --git a/morph.1.in b/morph.1.in
index 6ee9d14e..38bff721 100644
--- a/morph.1.in
+++ b/morph.1.in
@@ -84,6 +84,13 @@ Otherwise,
 .B morph
 sets the environment variable to
 .BR false .
+.TP
+.B MORPH_PLUGIN_PATH
+.B morph
+looks for plugins additionally in the directories given in this variable.
+Syntax is same as for
+.B PATH
+(i.e., colon delimited pathnames).
 .PP
 The
 .BR cliapp (5)
diff --git a/morphlib/app.py b/morphlib/app.py
index a22a9d51..20934dd7 100755
--- a/morphlib/app.py
+++ b/morphlib/app.py
@@ -142,6 +142,11 @@ class Morph(cliapp.Application):
                               'build things in a staging chroot '
                                 '(require real root to use)')
 
+    def setup_plugin_manager(self):
+        cliapp.Application.setup_plugin_manager(self)
+        s = os.environ.get('MORPH_PLUGIN_PATH', '')
+        self.pluginmgr.locations += s.split(':')
+
     def _itertriplets(self, args):
         '''Generate repo, ref, filename triples from args.'''