Hi guix,

mozjs@60.2.3-2 bundles a lot.

In 'third_party/python', there are 35 separate directories,
presumably all different software projects:

/gnu/store/j2sz7dg35vkcz38sim71jll2ix1nk554-mozjs-60.2.3-2-checkout$ ls third_party/python/
attrs/            dlmanager/  json-e/      pyasn1/          pytoml/               six/
blessings/        fluent/     lldbutils/   pyasn1-modules/  pyyaml/               slugid/
cbor2/            futures/    mock-1.0.0/  PyECC/           redo/                 virtualenv/
compare-locales/  gdbpp/      moz.build    pylru/           requests/             voluptuous/
configobj/        hglib/      psutil/      pystache/        requests-unixsocket/  which/
cram/             jsmin/      py/          pytest/          rsa/

Greetings,
Maxime.