These are needed by nix in order to properly
download and build stuff.
busybox's netcat does not work since it doesn't
support -X.
Reviewed-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
This should prevent issues when putting it under
/gpfs/{projects,scratch} that have sgid and group=nobody.
Reviewed-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>