Update physlock to a more current version which supports PAM and
systemd-logind. Amongst others, this should work now with the slim
login manager without any additional configuration, because it does
not rely on the utmp mechanism anymore.
Version 2.0.0 is installed as a separate package called "couchdb2".
When setting the config option "package" attribute to pkgs.couchdb2, a
corresponding service configuration will be generated. If a previous
1.6 installation exists, the databases can still be found on the local
port (default: 5986) and can be replicated from there.
Note that single-node or cluster setup still needs to be configured
manually, as described in
http://docs.couchdb.org/en/2.0.0/install/index.html.
Make the existing ghdl recipe more flexible, and introduce "ghdl_llvm"
as a package in addition to "ghdl_mcode". This seems to specifically
require llvm 3.5, though. The flavour is also encoded in the package name.
cc @viric
timor