Here is a patch to add support to OCaml 5.0 to supermin:
https://github.com/libguestfs/supermin/commit/01a6f2cfdb44d6140f11dbd00f13ceb9e45892c7
Note: As with my hivex patch, this patch also breaks support for OCaml < 4.07. If you want to keep support for those versions you can apply the following patch as well:
https://github.com/kit-ty-kate/supermin/commit/4813c44bc48ab02a2a0eb518c6a03a88c41f06e6
Kind regards,