[planner: 2/40] build: Fix python option when missing deps with auto or explicitly disabled

[Mart Raudsepp <mraudsepp src gnome org>]

commit a2ad8357d5993b8366f566dfdafff4347e398aed
Author: Mart Raudsepp <leio gentoo org>
Date:   Wed Mar 4 10:49:56 2020 +0200

    build: Fix python option when missing deps with auto or explicitly disabled

 meson.build | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/meson.build b/meson.build
index dc319999..10b2b860 100644
--- a/meson.build
+++ b/meson.build
@@ -6,7 +6,7 @@ project('planner',
 )
 
 cc = meson.get_compiler('c')
-pygobject_codegen = find_program('pygobject-codegen-2.0')
+pygobject_codegen = find_program('pygobject-codegen-2.0', required: get_option('python'))
 
 i18n = import('i18n')
 gnome = import('gnome')
@@ -38,9 +38,11 @@ gnomecanvas_dep = dependency('libgnomecanvas-2.0', version: '>=2.10.0')
 gobject_dep = dependency('gobject-2.0')
 gtk_dep = dependency('gtk+-2.0', version: '>= 2.24.0')
 libxml_dep = dependency('libxml-2.0', version: '>= 2.6.27')
-pygobject_dep = dependency('pygobject-2.0')
+pygobject_dep = dependency('pygobject-2.0', required: get_option('python'))
 pygtk_dep = dependency('pygtk-2.0', version: '>= 2.6.0', required: get_option('python'))
-pygtk_defsdir = pygtk_dep.get_pkgconfig_variable('defsdir')
+if pygtk_dep.found()
+  pygtk_defsdir = pygtk_dep.get_pkgconfig_variable('defsdir')
+endif
 python = pymod.find_installation('python2', required: get_option('python'))
 python_dep = python.dependency()
 libplanner_deps = [glib_dep, gmodule_dep, gobject_dep, libxml_dep, m_dep,]