Use of external Javascript etc (privacy issue):

- report.html, table.html, gui.html

Intentionally left unfixed for the time being: there is a risk that
using the version Debian has as libjs* instead of the version
specified by upstream will break things, and also reports might be
sent to people without snakemake installed.

Missing (optional) dependencies:

- conda (ITP #926416)
- gfal-copy and other gfal-* commands for gfal/gridftp (missing from gfal2?)

- setup.py-declared:
slacker
retry (ITP #961109)
crc32c, oauth2client, google-api-python-client, google-cloud-storage (google.cloud)
peppy, eido

- imports in snakemake directory (not tests/doc/examples) other than setup.py-declared depends:
XRootD
aioeasywebdav
moto (RFP #777089)
pysftp
tibanna
tes

drmaa is currently in Debian, but does not work due to #951704 and may be removed.
