mirage 4.10: restrict to cmdliner < 2

Author: hannesm

packages/mirage/mirage.4.10.0/opam

@@ -22,8 +22,8 @@ depends: [
   "ocaml" {with-test & < "5"}
   "dune" {>= "2.9.0"}
   "astring"
-  "cmdliner" {>= "1.2.0"}
-  "cmdliner" {with-test & >= "1.3.0"}
+  "cmdliner" {>= "1.2.0" & < "2.0.0"}
+  "cmdliner" {with-test & >= "1.3.0" & < "2.0.0"}
   "emile" {>= "1.1"}
   "fmt" {>= "0.8.7"}
   "ipaddr" {>= "5.0.0"}