fakeroot provides a fake root environment by means of LD_PRELOAD and SYSV IPC (or TCP) trickery.
Debian Package Tracking System page
fakeroot is currently maintained on arch.debian.org. To check it out with tla, execute the following commands
% tla register-archive fakeroot@packages.debian.org--fakeroot \
http://arch.debian.org/arch/fakeroot/fakeroot/
% tla get -A fakeroot@packages.debian.org--fakeroot fakeroot--main--0.0