scratch-bzr 925 build failure

==> Making package: scratch-bzr 925-1 (Thu Nov 15 19:55:44 CET 2012)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving Sources...
==> Extracting Sources...
==> Starting build()...
==> Connecting to Bazaar server....
You have not informed bzr of your Launchpad ID, and you must do this to
write to Launchpad or access private data.  See "bzr help launchpad-login".
Branched 925 revisions.
==> BZR checkout done or server timeout
==> Starting make...
-- The C compiler identification is GNU 4.7.2
-- The CXX compiler identification is GNU 4.7.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found Vala: /usr/bin/valac
-- checking for a minimum Vala version of 0.15.1
--   found Vala, version 0.18.1
-- GSettings schemas will be installed into /usr/share/glib-2.0/schemas/
-- Found PkgConfig: pkg-config (found version "0.27.1")
-- checking for module 'gtk+-3.0 >= 3.4'
--   found gtk+-3.0 , version 3.6.2
-- checking for modules 'libpeas-gtk-1.0;gtksourceview-3.0>=3.0;gthread-2.0'
--   found libpeas-gtk-1.0, version 1.6.1
--   found gtksourceview-3.0, version 3.6.1
--   found gthread-2.0, version 2.34.2
-- checking for modules 'libpeas-1.0;gtksourceview-3.0;gee-1.0;gobject-2.0;glib-2.0;gio-2.0;gconf-2.0;gtk+-3.0;granite;zeitgeist-1.0;gobject-introspection-1.0'
--   found libpeas-1.0, version 1.6.1
--   found gtksourceview-3.0, version 3.6.1
--   found gee-1.0, version 0.6.6.1
--   found gobject-2.0, version 2.34.2
--   found glib-2.0, version 2.34.2
--   found gio-2.0, version 2.34.2
--   found gconf-2.0, version 3.2.5
--   found gtk+-3.0, version 3.6.2
--   found granite, version 0.2
--   found zeitgeist-1.0, version 0.3.18
--   found gobject-introspection-1.0, version 1.34.2
-- checking for module 'libpeas-gtk-1.0'
--   found libpeas-gtk-1.0, version 1.6.1
-- Could NOT find PkgConfig (missing:  PKG_CONFIG_EXECUTABLE) (found version "0.27.1")
-- checking for module 'libsoup-2.4'
--   found libsoup-2.4, version 2.40.2
-- File Manager plugin will be compiled
-- checking for modules 'marlincore;gail-3.0'
--   found marlincore, version 0.1
--   found gail-3.0, version 3.6.2
-- Filemanager plugin will be compiled
-- checking for module 'vte-2.90'
--   found vte-2.90, version 0.34.2
-- checking for module 'libdevhelp-3.0'
--   found libdevhelp-3.0, version 3.6.1
-- checking for module 'webkitgtk-3.0'
--   found webkitgtk-3.0, version 1.10.1
-- Configuring done
-- Generating done
-- Build files have been written to: /home/neuromancer85/abs/src/scratch-build/build
[  2%] Generating main.c, SearchManager.c, SourceView.c, Settings.c, PluginManager.c, TemplateManager.c, FileHandler.c, scratchcore.vapi, scratchcore.h, scratchcore_internal.h
libpeas-1.0.vapi:52.49-52.59: error: The type name `GI.Argument' could not be found
		public virtual bool call (string method_name, GI.Argument args);
		                                              ^^^^^^^^^^^
Compilation failed: 1 error(s), 0 warning(s)
make[2]: *** [scratchcore/main.c] Error 1
make[1]: *** [scratchcore/CMakeFiles/scratchcore.dir/all] Error 2
make: *** [all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...