Error trying to run yarn test

[andremw]

This library would be really helpful for me so I was trying to understand how to use it and started by trying to run yarn test, but I'm getting this error:

$ yarn ppx:build && rescript clean && rescript build && node ./test/Example.bs.js
$ esy install && esy build
info install 0.6.11 (using esy.json)
info esy build 0.6.11 (using esy.json)
info building @esy-ocaml/substs@0.0.1@d41d8cd9
info building ocaml@4.8.1000@d41d8cd9
error: build failed with exit code: 1
  build log:
    # esy-build-package: building: @esy-ocaml/substs@0.0.1
    # esy-build-package: pwd: /Users/andre/.esy/source/i/esy_ocaml__s__substs__0.0.1__19de1ee1
    # esy-build-package: running: 'cp' './substs' '/Users/andre/.esy/3__________________________________________________________________/s/esy_ocaml__s__substs-0.0.1-f9e9eafc/bin/substs'
    sandbox-exec: /private/var/folders/9z/lkq75g9x1nxg6fyqtjd67zgm0000gn/T/ba326f:1:2: version number must be integer
        (version 1)
    
    error: command failed: 'cp' './substs' '/Users/andre/.esy/3__________________________________________________________________/s/esy_ocaml__s__substs-0.0.1-f9e9eafc/bin/substs' (exited with 65)
    esy-build-package: exiting with errors above...
    
  building @esy-ocaml/substs@0.0.1
esy: exiting due to errors above

What am I missing?

[andremw]

BTW, is there any plans to make a release? The documentation already looks pretty nice. It would be very nice to be able to use this lib. Great job so far!