`opam switch create 5.0.0` fails about opam-repository

[fpottier]

And running opam 2.1.6.

[fpottier]

Actually, I am seeing a similar problem with 5.2.0...

[rleonid]

I've also tried several switches and the problem seems to be that either the share or ocaml-config directory in ~/.opam/<switch>share/ocaml-config/gen_ocaml_config.ml is not created or correctly unpacked.

[hannesm]

Dear @fpottier and @rleonid, sorry for your inconvenience.

It seems to be caused by the removal of files, and discussed in #25961 and https://discuss.ocaml.org/t/the-compilation-of-ocaml-5-1-1-failed-at-ocaml-gen-ocaml-config-ml-5-1-1-ocaml/14731

So, the quick workaround: rm -rf ~/.opam/repo/default{,.tar.gz} && opam update default -- in the long run, ensure that you have a GNU patch installed (via homebrew or macports).

[fpottier]

Thanks @hannesm for the work-around, which worked. I had installed gpatch already but did not know how to fix my broken state. I am closing this issue.

[rleonid]

Thank you @hannesm !!!