I tried to "pbuilder create" a new base.tgz, but it still had tzdata and
lsb-base, so I had to "pbuilder login --save-after-login" and remove
them by hand using "dpkg --purge" (then "apt-get autoremove" that did
nothing). I still had no problem building node-es6-promise.
How can I get the clean, minimal and up-to-date chroot you mention in
Snark on #debian-js