[gnome-builder] meson: defer to ninja for installability

[Christian Hergert <chergert src gnome org>]

commit 7493d79f5f0c191a968c97cfdc7b5701aeb88c0c
Author: Christian Hergert <chergert redhat com>
Date:   Mon Mar 20 18:25:02 2017 -0700

    meson: defer to ninja for installability
    
    We should always run ninja install, just like when building with ninja.
    It has the most up-to-date information on what needs to be done.

 plugins/meson/meson_plugin/__init__.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/meson/meson_plugin/__init__.py b/plugins/meson/meson_plugin/__init__.py
index 170aba6..6e13abf 100644
--- a/plugins/meson/meson_plugin/__init__.py
+++ b/plugins/meson/meson_plugin/__init__.py
@@ -328,6 +328,7 @@ class MesonPipelineAddin(Ide.Object, Ide.BuildPipelineAddin):
         install_launcher.push_argv('install')
 
         install_stage = Ide.BuildStageLauncher.new(context, install_launcher)
+        install_stage.connect('query', self._query)
         self.track(pipeline.connect(Ide.BuildPhase.INSTALL, 0, install_stage))
 
     def _query(self, stage, pipeline, cancellable):