Fix Gtksourceview3 detection with new opam package
lablgtk3-sourceview3
seems the new name of the ocamlfind package lablgtk3.sourceview3
Prochaines maintenances programmées: lundi 06/05, lundi 03/06, lundi 01/07
Pour plus d'informations: https://doc-si.inria.fr/display/SU/Gitlab
lablgtk3-sourceview3
seems the new name of the ocamlfind package lablgtk3.sourceview3