File ocaml-hmap.patch of Package ocaml-hmap

--- /dev/null
+++ b/dune-project
@@ -0,0 +1,2 @@
+(lang dune 2.0)
+(name hmap)
--- /dev/null
+++ b/src/dune
@@ -0,0 +1,5 @@
+(library
+ (name hmap)
+ (public_name hmap)
+ (wrapped false)
+)