opam update is failing

[ncihnegn]

$ opam update

<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><>  🐫
[default] no changes from https://opam.ocaml.org
[ERROR] Could not update repository "default": In
        /private/var/folders/x8/8s64cxbx0yj16d3shdxmm5gr0000gn/T/opam-12814-5e0534/default/packages/ocaml-variants/ocaml-variants.5.0.0+trunk/opam:
        unsupported or missing file format version; should be 2.0 or older

And I can't open
https://opam.ocaml.org/packages/ocaml-variants/ocaml-variants.5.0.0+trunk/

[dra27]

I think this can be worked around by erasing the repo state and re-updating (@rjbou ?)

[dra27]

@ncihnegn - it's possible that another opam update should now fix the problem. If it doesn't, you should be able to do: opam repo set-url default git+https://github.com/ocaml/opam-repository and then opam repo set-url default https://opam.ocaml.org, as that will trigger a re-init.

[ncihnegn]

It works after re-init.