Created attachment 689265 [details] emerge info Hello, I attempted to build rxvt-unicode, in a Prefix environment, and it appears to call the hosts' xsubpp instead of the one within the Prefix. I saw https://bugs.gentoo.org/506500 was previously opened on this, but appears to be marked resolved/obsolete. In my case, xsubpp only exists within the Prefix, so the build fails the compile phase. fwiw, I setup a local repo for this ebuild, excluded the rxvt-unicode-9.21-xsubpp.patch from the patch list, and was able to successfully emerge with build logs indicating xsubpp being used within the Prefix.
Created attachment 689268 [details] build.log
*** This bug has been marked as a duplicate of bug 506500 ***