# \#ppx\_compare

**URL:** https://discuss.ocaml.org/tag/ppx-compare/70.md

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## [Unable to use ppx\_compare, ppx\_hash, ppx\_type\_conv in 4.05 utop](https://discuss.ocaml.org/t/unable-to-use-ppx-compare-ppx-hash-ppx-type-conv-in-4-05-utop/677)

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**Author:** [@BikalGurung](https://discuss.ocaml.org/u/BikalGurung)\
**Replies:** 2\
**Last updated:** [September 16, 2017, 2:16pm UTC](https://discuss.ocaml.org/t/unable-to-use-ppx-compare-ppx-hash-ppx-type-conv-in-4-05-utop/677 "2017-09-16T14:16:13Z")

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Hi, I have upgraded to ocaml 4.05 and am attempting to use ppx\_compare, ppx\_hash and ppx\_type\_conv in utop via the following command, #use topfind;; #require "base";; #require "ppx\_hash";; However, I am getting the er…