Merge pull request ocaml#24780 from mseri/lablgtk

lablgtk 2.18.13 is compatible with ocaml 5.0

Author: mseri

packages/lablgtk/lablgtk.2.18.13/opam

@@ -13,7 +13,7 @@ install: [
   [make "install"]
 ]
 depends: [
-  "ocaml" {>= "4.06" & < "5.0.0"}
+  "ocaml" {>= "4.06"} 
   "ocamlfind" {>= "1.2.1"}
   "conf-gtk2" {build}
   "camlp-streams" {build}
@@ -24,6 +24,9 @@ depopts: [
   "conf-glade"
   "lablgl"
 ]
+conflicts: [
+  "conf-glade" {ocaml:version >= "5.0"}
+]
 patches: ["lablgldir.patch"]
 post-messages: [
   "This package requires gtk+ 2.0 development packages installed on your system"