From b04d564bcf32a8ae6f8cd3b7811ed132a49ecbe3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
Date: Thu, 1 Apr 2021 14:02:14 +0200
Subject: [PATCH] manager: Allow to add plugin dir via environent

This eases testing of plugins from the source tree:

  CALLS_PLUGIN_DIR=_build/plugins/dummy/ _build/src/gnome-calls -p dummy
---
 README.md           | 6 ++++++
 src/calls-manager.c | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/README.md b/README.md
index d452505..b862d53 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,12 @@ If using ModemManager, Calls will wait for ModemManager to appear on
 D-Bus and then wait for usable modems to appear.  The UI will be
 inactive and display a status message until a usable modem appears.
 
+When running from the source tree you can use `CALLS_PLUGIN_DIR` environment
+varible to specify the directroy from where plugins are loaded. To e.g. load
+the dummy plugin from the source tree:
+
+    export CALLS_PLUGIN_DIR=_build/plugins/dummy/
+    _build/src/gnome-calls -p dummy
 
 ### oFono
 There is also an oFono backend, "ofono".  This was the first backend
diff --git a/src/calls-manager.c b/src/calls-manager.c
index 7e48a54..9584812 100644
--- a/src/calls-manager.c
+++ b/src/calls-manager.c
@@ -86,12 +86,19 @@ load_provider (const gchar* name)
   PeasEngine *plugins;
   PeasPluginInfo *info;
   PeasExtension *extension;
+  const gchar *dir;
 
   // Add Calls search path and rescan
   plugins = peas_engine_get_default ();
   peas_engine_add_search_path (plugins, PLUGIN_LIBDIR, NULL);
   g_debug ("Scanning for plugins in `%s'", PLUGIN_LIBDIR);
 
+  dir = g_getenv ("CALLS_PLUGIN_DIR");
+  if (dir && dir[0] != '\0') {
+    g_debug ("Adding %s to plugin search path", dir);
+    peas_engine_prepend_search_path (plugins, dir, NULL);
+  }
+
   // Find the plugin
   info = peas_engine_get_plugin_info (plugins, name);
   if (!info)