Package: proot
Version: 5.4.0 (guix 4739e68)
It is possible to build guix with a store directory different from "/gnu/store". However, in such a setup, it is not possible to build the proot and proot-static packages. They fail in the phase check.
The tests of the proot package are patched to replace references to the "/usr" directory with "/gnu". The assumption that "/gnu" exists only holds when the store is in its usual location.