[gnome-music/wip/mschraal/meson: 17/17] meson: Make music run in the builddir

[Marinus Schraal <mschraal src gnome org>]

commit aca5adeb2e3023792ab79ef194b00101564bfc98
Author: Marinus Schraal <mschraal gnome org>
Date:   Thu Feb 22 13:05:44 2018 +0100

    meson: Make music run in the builddir
    
    This is a bit of hacky mess, probably want to rethink this.

 gnome-music.in     | 24 ++++++++++++++----------
 meson.build        |  2 ++
 meson_post_conf.py | 11 +++++++++++
 3 files changed, 27 insertions(+), 10 deletions(-)
---
diff --git a/gnome-music.in b/gnome-music.in
index ac23fcf..16a282b 100755
--- a/gnome-music.in
+++ b/gnome-music.in
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (c) 2016 The GNOME Music Developers
+# Copyright © 2018 The GNOME Music Developers
 #
 # GNOME Music is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -35,6 +35,8 @@ import sys
 sys.path.insert(1, '@pyexecdir@')
 # Make sure we'll find the gnomemusic module, even in JHBuild
 sys.path.insert(1, '@pythondir@')
+# In the local use case the installed schemas go in <builddir>/data
+os.environ["XDG_DATA_DIRS"] = os.environ["XDG_DATA_DIRS"] + ":data"
 
 import gi
 
@@ -45,19 +47,22 @@ from gi.repository import GIRepository, Gio, Gtk, Gst
 
 Gst.init(None)
 
-import gnomemusic
+# With meson only support running in source tree when the builddir is
+# a direct child of the source root dir.
+try:
+    import gnomemusic
+except:
+    sys.path.insert(1, '..')
+    import gnomemusic
 
 
 SOURCE_DIR = os.path.abspath(
     os.path.join(os.path.dirname(gnomemusic.__file__), '..'))
 
-# Defines if we are running from inside project source. This is
-# necessary so we can set data and libgd directories correctly.
 _LOCAL = os.path.exists(os.path.join(SOURCE_DIR, 'gnome-music.doap'))
 
-# Directory settings
 LOCALE_DIR = '@localedir@'
-PKGDATA_DIR = os.path.join(SOURCE_DIR, 'data') if _LOCAL else '@pkgdatadir@'
+PKGDATA_DIR = os.path.join('data') if _LOCAL else '@pkgdatadir@'
 
 # Log settings
 LOG_FORMAT = '%(asctime)s %(levelname)s\t%(message)s'
@@ -67,14 +72,13 @@ LOG_DATE_FORMAT = '%H:%M:%S'
 def set_environment_variables():
     """Sets application environment variables."""
     if _LOCAL:
-        os.environ.setdefault('GSETTINGS_SCHEMA_DIR', PKGDATA_DIR)
-
+        os.environ.setdefault('GSETTINGS_SCHEMA_DIR', sys.path[0] + "/data")
 
 def set_libgd():
     """Configures application to run our own libgd copy."""
     if _LOCAL:
-        libgd_libdir = os.path.join(SOURCE_DIR, 'libgd', '.libs')
-        libgd_typelibdir = os.path.join(SOURCE_DIR, 'libgd')
+        libgd_libdir = os.path.join('subprojects', 'libgd', 'libgd')
+        libgd_typelibdir = os.path.join('subprojects', 'libgd', 'libgd')
     else:
         libgd_libdir = '@pkglibdir@'
         libgd_typelibdir = '@pkglibdir@/girepository-1.0'
diff --git a/meson.build b/meson.build
index dd707d9..c5c3969 100644
--- a/meson.build
+++ b/meson.build
@@ -67,5 +67,7 @@ configure_file(
     install_dir: get_option('bindir')
 )
 
+meson.add_postconf_script('meson_post_conf.py')
+
 # Run the post install script
 meson.add_install_script('meson_post_install.py')
\ No newline at end of file
diff --git a/meson_post_conf.py b/meson_post_conf.py
new file mode 100644
index 0000000..7b079dd
--- /dev/null
+++ b/meson_post_conf.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+
+import os
+import subprocess
+
+build_root = os.environ.get('MESON_BUILD_ROOT')
+source_root = os.environ.get('MESON_SOURCE_ROOT')
+
+subprocess.call(['glib-compile-schemas', source_root + '/data/'])
+subprocess.call(['mkdir', '-p', build_root + '/data/glib-2.0/schemas'])
+subprocess.call(['mv', source_root + '/data/gschemas.compiled', build_root + '/data/glib-2.0/schemas'])
\ No newline at end of file