I pushed a patch to the portola forest which works around a problem related to musl and confstr. Specifically, hotspot uses confstr to get information about the version of the GNU C library and libpthread, but musl doesn't implement that functionality. Instead, it returns an error code from confstr.

While the patch fixes the immediate problem, the version information - what should be printed and on what format - needs to be revisited, clarified and cleaned up.