[WIP 4/8] gnu: vala: Build Vala API (.vapi) generator.

[Leo Famulari]

* gnu/packages/gnome.scm (vala)[arguments]: Pass --enable-apigen
to #:configure-flags.
---
 gnu/packages/gnome.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/gnome.scm b/gnu/packages/gnome.scm
index d1a5a46..c709297 100644
--- a/gnu/packages/gnome.scm
+++ b/gnu/packages/gnome.scm
@@ -1709,7 +1709,9 @@ passwords in the GNOME keyring.")
                        (setenv "CC" "gcc")
                        ;; For missing '/etc/machine-id'.
                        (setenv "DBUS_FATAL_WARNINGS" "0")
-                       #t)))))
+                       #t)))
+       ;; Build the Vala API generator
+       #:configure-flags '("--enable-vapigen")))
     (native-inputs
      `(("pkg-config" ,pkg-config)
        ("flex" ,flex)
-- 
2.7.3