i don't follow the above. You would point to
/path/to/guile-config and /path/to/guile if
you have the right version installed. Lilypond is complaining
that my installed version is too new.
A (rare) need to downgrade a dependency, correct?
Or -- correct me if i'm wrong -- as an alternative to
downgrading, I could build an old, compatible version from
source, to an isolated directory, and satisfy the lilypond
dependency that way?
I was asking about the latter: the older versions of guile
are not compiling.
For me this was not clear until now.