add explicit dep on seq

dune-project

@@ -11,7 +11,7 @@
  (name lwd)
  (synopsis "Lightweight reactive documents")
  (description "TODO")
- (depends dune))
+ (depends dune seq (ocaml (>= "4.03"))))
 
 (package
  (name nottui)

lib/lwd/dune

@@ -2,6 +2,7 @@
   (name lwd) 
   (public_name lwd)
   (modules lwd lwd_table lwd_infix lwd_utils) 
+  (libraries seq)
   (wrapped false))
 
 (rule

lwd.opam

@@ -7,7 +7,11 @@ authors: ["Frédéric Bour"]
 license: "MIT"
 homepage: "https://github.com/let-def/lwd"
 bug-reports: "https://github.com/let-def/lwd/issues"
-depends: ["dune"]
+depends: [
+  "dune"
+  "seq"
+  "ocaml" {>= "4.03"}
+]
 build: [
   ["dune" "subst"] {pinned}
   [