bump to dune 3.15 to fix format

Author: c-cube

dune-project

@@ -1,4 +1,4 @@
-(lang dune 3.0)
+(lang dune 3.15)
 
 (using mdx 0.2)
 

moonpool-lwt.opam

@@ -8,7 +8,7 @@ license: "MIT"
 homepage: "https://github.com/c-cube/moonpool"
 bug-reports: "https://github.com/c-cube/moonpool/issues"
 depends: [
-  "dune" {>= "3.0"}
+  "dune" {>= "3.15"}
   "moonpool" {= version}
   "ocaml" {>= "5.0"}
   "qcheck-core" {with-test & >= "0.21"}

moonpool.opam

@@ -10,7 +10,7 @@ homepage: "https://github.com/c-cube/moonpool"
 bug-reports: "https://github.com/c-cube/moonpool/issues"
 depends: [
   "ocaml" {>= "5.0"}
-  "dune" {>= "3.0"}
+  "dune" {>= "3.15"}
   "either" {>= "1.0"}
   "trace" {>= "0.11" & with-test}
   "trace-tef" {>= "0.11" & with-test}

src/lwt/dune

@@ -1,9 +1,10 @@
 (library
  (name moonpool_lwt)
  (public_name moonpool-lwt)
- (optional)
  (enabled_if
-  (>= %{ocaml_version} 5.0))
+  (and
+   (>= %{ocaml_version} 5.0)
+   %{lib-available:lwt}))
  (modules moonpool_lwt types_)
  (libraries
   (re_export moonpool)