Hi, I have been trying out the guix package manager on top of Debian Jessie for a few weeks and I ran into a problem installing TeX Live, namely with the bibtex replacement biber.
TeX Live installs fine, and all the executables are available in my user profile, except for biber. I digged a bit, and it seems that while biber is included in the TeX Live texmf-dist tree, it is not under share/texmf-dist/scripts but share/texmf-dist/source/bibtex/biber, in a compressed tarball biblatex-biber.tar.gz, from which biblatex-biber-1.8 can be extracted. From this directory, I was able to run the perl build and install tools. Clément