Comment # 4 on bug 905638 from Johannes Kastl

I dug a little deeper. There is a call for /usr/lib/build/init_buildsystem in
the template, the one listed in comment 1.

This script generates a rpmlist with /usr/lib/build/expanddeps (line 501).

This list is processed further, and then some time later a directory (line 818)
.init_cache/todelete is being created and populated with regard to this list.

And then all of the packages in this directory are being uninstalled, not in
the BUILD-Root but in the host system (line ).

The invocation of expanddeps is the same in both old and new version of build
(20131015 vs. 20141024).

The expanddeps perl script is different, the newer version uses $recipe, which
generates some warnings (Use of uninitialized value $recipe in pattern match
(m//) at /usr/lib/build/expanddeps line 100.).

I would guess that the difference in expanddeps is the problem. But again, I am
not an expert for build.