[ANN] Windows-friendly OCaml 4.12 distribution - Diskuv OCaml 0.1.0

I also tried opam install ppx_jane, which gave me such an error:

PS C:\Users\IDEA\git\hello> opam install ppx_jane      
[NOTE] External dependency handling not supported for
       OS family 'windows'.
       You can disable this check using 'opam option   
       --global depext=false'
[ERROR] Package conflict!
  * Missing dependency:
    - variantslib >= v0.14
    not available because the package is pinned to     
      version 109.15.02

No solution found, exiting
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