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I wanted to use a package which has some camlp4 extensions in utop, but I get:

utop # #camlp4o;;  
utop was built without camlp4 support.

This is with utop version 2.0.1 and OCaml 4.05.0.

I installed utop with opam. Is there a way to rebuild utop with camlp4 support?

glennsl
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aneccodeal
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  • I see this comment in the CHANGES.md file for utop: "* Drop support for camlp4/camlp5" - that was for version 2.0.0. This seems unfortunate, since a lot of documentation like Real World OCaml depend on camlp4 support in utop. – aneccodeal Oct 18 '17 at 03:28
  • On the bright side, Real World OCaml is currently being updated to match these changes. :) – Richard-Degenne Oct 18 '17 at 08:50

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