received.0.5.2 requires at least dune.2.0 and add a conflict with result.1.5

Author: dinosaure

packages/received/received.0.5.2/opam

@@ -18,12 +18,15 @@ build: [
 
 depends: [
   "ocaml"    {>= "4.08.0"}
-  "dune"     {>= "1.8.0"}
+  "dune"     {>= "2.0"}
   "mrmime"   {>= "0.5.0"}
   "emile"    {>= "0.8"}
   "angstrom" {>= "0.14.0"}
   "colombe"  {>= "0.4.0"}
 ]
+conflicts: [
+  "result"   {< "1.5"}
+]
 url {
   src:
     "https://github.com/mirage/colombe/releases/download/received-v0.5.2/colombe-received-v0.5.2.tbz"