`udiskie` breaks for me with the following error when using 1.7.4:
```
Traceback (most recent call last):
File "/nix/store/cqa72mqgm5gi0xpqp5r8csdizv3p3ajr-udiskie-1.7.4/lib/python3.6/site-packages/udiskie/cli.py", line 307, in _start_async_tasks
results = yield self._init()
File "/nix/store/cqa72mqgm5gi0xpqp5r8csdizv3p3ajr-udiskie-1.7.4/lib/python3.6/site-packages/udiskie/cli.py", line 495, in _init
tasks.append(Async())
NameError: name 'Async' is not defined
```
The error has been confirmed by the Debian issue tracker, so it's
obviously not related to NixOS.
See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=899419 for further
reference.
Currently, vinagre fails to build with the following message:
vinagre/vinagre-utils.c: In function 'vinagre_utils_request_credential':
vinagre/vinagre-utils.c:686:2: error: format not a string literal, argument types not checked [-Werror=format-nonliteral]
_tmp12_ = g_strdup_printf (_tmp10_, _tmp11_);
^~~~~~~
vinagre-utils.c seems to be generated from vinagre-utils.vala. I
couldn't find anything weird in here, so let's disable
-Werror=format-nonliteral for now as done elsewhere, too.
This has been reported by @qknight in his Stack Overflow question:
https://stackoverflow.com/q/50678639
The correct way to override a single value would be to use something
like this:
systemd.services.nagios.serviceConfig.Restart = lib.mkForce "no";
However, this doesn't work because the check is applied for the attrsOf
type and thus the attribute values might still contain the attribute set
created by mkOverride.
The unitOption type however did already account for this, but at this
stage it's already too late.
So now the actual value is unpacked while checking the values of the
attribute set, which should allow us to override values in
serviceConfig.
Signed-off-by: aszlig <aszlig@nix.build>
Cc: @edolstra, @qknight
