Since pprolog has zero dependencies other than what is available by default on 9front it is pretty easy to install.
If you have git9 installed the steps are:
git/clone https://git.sr.ht/~pmikkelsen/pprolog cd pprolog mk install
This will install the pprolog binary to
/$objtype/bin, so you may want to modify
BIN in the
mkfile to install to somewhere else like
It will also install the prolog libraries to
/sys/lib/prolog and this is hardcoded in the
mkfile and in
dat.h if you want to change that.