It turns out that pglite is actually compatible with normal postgres database dumps, you just need to provide the right flags to pg_dump:
https://github.com/electric-sql/pglite/issues/911
I was able to perform a complete migration of minimitra database from postgresql 15 to latest pglite (which is based on postgresql 17). Didn't notice any issues, it seems to be ready for production use.
RE: https://mitra.social/objects/019cc4a0-9fcc-76c4-c412-33a78e7f5bd4