Setting up a development environment for guile-g-golf based software in KDE

[Jérémy Korwin-Zmijowski]

Dear Guixters,

I want to build a GUI for Gnome (using guile-g-golf (and gtk)).

When under Gnome my small "Hello World" (from the manual example script) 
window shows up.

When under KDE (Plasma) nothing shows up but errors in the terminal :

   $ guix shell guile gtk guile-g-golf -- ./hello-world
   (guile:10978): GLib-GObject-WARNING **: 12:19:06.388: cannot
   register existing type 'GdkPixbuf'
   (guile:10978): GLib-GObject-CRITICAL **: 12:19:06.388:
   g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE
   (instance_type)' failed
   (guile:10978): GLib-GObject-CRITICAL **: 12:19:06.388:
   g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE
   (instance_type)' failed
   (guile:10978): GLib-CRITICAL **: 12:19:06.388: g_once_init_leave:
   assertion 'result != 0' failed

Naive intuition: for KDE I need to add some dependencies to my 
development environment - I don't know about yet - haha

I am new to GUI universe so don't hesitate to question the obvious.

Cheers,

--
Jérémy Korwin-Zmijowski

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