Building nix derivations needs tar (provided by gnutar) and gzip on the
PATH in order to extract .tar.gz archives.
Change-Id: Ia2df7a3a770cfd342dfede58ad34e04805fbd1f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4685
Tested-by: BuildkiteCI
Autosubmit: grfn <grfn@gws.fyi>
Reviewed-by: wpcarro <wpcarro@gmail.com>