This package fails to build in mock. build.log is attached.
Created attachment 130592 [details] Matt Domsch's build log
Eeeew, this makes some call to a remote site for something. Eww eww eww. This needs to be fixes so that it can build in a locked down env.
xmlto always uses '--nonet' when it runs xsltproc, so it never actually tries connecting anywhere. My guess is that some file is missing causing these errors. Investigating.
Can't reproduce this, and xsltproc is certainly not connecting anywhere from inside brew. See brew build 64510 with strace log.