if you find the above too long, the alternative shortcut "LCSB" would do fine for my institute's name...

otherwise, visually reviewed this and looks OK.

ps./fyi. if you feel like purist, the following hints that Perl is also used at some point:
https://github.com/fgeorgatos/easybuild.experimental/blob/master/contrib/pkgsrc/20130506/v/valgrind-3.8.1.eb
I suspect that it is a run-time dependency and I would certainly NOT add it as dep, to maximize the usability of this build...