[build system] Use dune 2

Michael D. Adams · Michael D. Adams · commit b9aa845b6657 · 2019-12-07T21:07:53.000-05:00
diff --git a/dune-project b/dune-project
@@ -1,3 +1,2 @@
-(lang dune 1.6.2)
-(using fmt 1.2)
+(lang dune 2.0.0)
 (using menhir 2.0)
diff --git a/src/hazelweb/dune b/src/hazelweb/dune
@@ -21,6 +21,7 @@
  (name main)
  (modules Main)
  (libraries hazelweb)
+ (modes js)
  (js_of_ocaml
   (flags
    (:include js-of-ocaml-flags-%{profile}))))
