Hennadii Stepanov

> Looks like the remaining test failure is a timeout? I believe that this PR changes are unrelated to that timeout. See: https://github.com/bitcoin/bitcoin/issues/28703.

Concept ACK on improving internal library boundaries. > Should also address #28548. I've tested lightly this branch. There still exist a circle dependency between `libbitcoin_crypto` and `libbitcoin_util`. In particular, the...

> All supported operating systems ship with python 3.10 (or later), so bumping the minimum should not cause any issues. I agree on using newer tools. > A bump will...

> I'd rather build up from from something like #30438 (and have a branch with similar changes). Is that branch publicly available?

> Concept NACK on the approach here (CI is showing why it wont work with depends, I assume it will also break other builds (where we haven't built the libs))....

The PR description has been updated with a runtime check example.

> Guix building [89f8e8e](https://github.com/bitcoin/bitcoin/commit/89f8e8e7f5828b1d06925e036c16eda050b05c81) on `aarch64` doesn't work: The issue should be fixed now.

Apparently, I haven't had time to address feedback and rebase this PR recently. Perhaps it could be labelled "Up for grabs"?

Also https://github.com/bitcoin/bitcoin/pull/28509.

> > The Autotools build fails in the same way. Btw, the CI tests only [FreeBSD 13.4](https://github.com/libevent/libevent/blob/78eb305975ed68d8bc159e46e6164afff1a74747/.github/workflows/build.yml#L781) for Autotools builds. > > Let's try to add 14.1 and see how...