Failure to run js_of_ocaml-ppx

collab_lib.ml

collab_vis.ml

let _ =
  Js.export "myMathLib"
    (object%js
       method add x y = x +. y
       method abs x = abs_float x
       val zero = 0.
     end)

jbuild

;; comment out to make `FLG -ppx` line appear in .merlin
(library
 ((name collab_lib)
  (modules (collab_lib))))

(executable
 ((name collab_vis)
  (modules (collab_vis))
  (public_name collab-vis)
  (libraries (js_of_ocaml js_of_ocaml-lwt))
  (preprocess (pps (js_of_ocaml-ppx)))))

jsooppxfail.opam

opam-version: "1.2"
maintainer: "Marek Kubica <marek@xivilization.net>"
author: "Marek Kubica <marek@xivilization.net>"
build: [["jbuilder" "build" "-p" name "-j" jobs]]
build-test: [["jbuilder" "runtest" "-p" name "-j" jobs]]
depends: [
  "js_of_ocaml"
  "js_of_ocaml-ppx"
  "ppx_driver"
  "jbuilder" {build}
]