meson: support for python packaging

meson.build

@@ -8,4 +8,9 @@ prefix = get_option('prefix')
 pkglibexecdir = get_option('libexecdir') / meson.project_name()
 pkgdatadir = get_option('datadir') / meson.project_name()
 
+python3 = import('python').find_installation('python3', modules: [
+    'google.protobuf',
+])
+
 subdir('Runtime')
+subdir('python')

python/graphenelibos/__init__.py

@@ -0,0 +1,3 @@
+'''Python support for Graphene'''
+
+__version__ = '@VERSION@'

python/graphenelibos/meson.build

@@ -0,0 +1,12 @@
+conf = configuration_data()
+conf.set('VERSION', meson.project_version())
+
+init_py = configure_file(
+    input: '__init__.py',
+    output: '__init__.py',
+    configuration: conf,
+)
+
+python3.install_sources([
+    init_py,
+], subdir: 'graphenelibos')

python/meson.build

@@ -0,0 +1 @@
+subdir('graphenelibos')