TeXLive installer fails to run certain postinstall scripts

[Karl Berry]

There have been other changes to config.{guess,sub} in the
meantime. Sorry, but I don't want to hold back updates indefinitely. So
you're going to have to find a patch or otherwise pursue the problem
with the maintainer (Ben Elliston). The problem is not specific to TL,
as far as I can see. It seems any package with musl-specific changes
would no longer be detecting it via config.guess. --good luck, karl.