Hello, Thank you. I have tried that command, I cannot see anything. Yes, my less is from GuixSD. I guess something was interferring from alien system. On Mon, Mar 28, 2016 at 06:49:41PM +0200, Ludovic Courtès wrote: > Jean Louis skribis: > > > package less: > > > > $ less --help > > head: cannot open ‘@/less/help/file/@’ for reading: No such file or > > directory > > Error: no lexer for alias '@/less/help/file/@' found > > I tried in a pristine environment like this: > > guix environment --container --ad-hoc less -- /bin/sh -c 'TERM=xterm less --help' > > This works well for me. Could you check on your system? > > If this works, it probably means that something from the host system is > interfering. > > Does ‘which less’ point to Guix’s less? > > Thanks, > Ludo’.