nix: Make nix the root

Which means now I'll have to think about real prefixes in commit names.

unprocessed/config/khal/config

@@ -0,0 +1,34 @@
+[calendars]
+[[calendars]]
+path = ~/.cache/vdirsyncer/calendars/*
+type = discover
+
+# [[birthdays]]
+# type=birthdays
+# path = ~/.cache/vdirsyncer/contacts/contacts/
+# color = light magenta
+
+[locale]
+timeformat = %H:%M
+dateformat = %d/%m
+longdateformat = %d/%m/%Y
+datetimeformat = %d/%m %H:%M
+longdatetimeformat = %d/%m/%Y %H:%M
+local_timezone = Europe/Paris
+
+[default]
+default_calendar = "Personnel"
+default_command = calendar
+highlight_event_days = True
+show_all_days = True
+timedelta = 7d
+
+[highlight_days]
+
+[view]
+agenda_day_format = "{bold}{name}, {date-long}{reset}"
+agenda_event_format = "{calendar-color}{cancelled}{start-end-time-style} {title}{repeat-symbol} | {location}{reset}"
+bold_for_light_color = False
+event_format = "{calendar-color}{cancelled}{start}-{end} {title}{repeat-symbol} | {location}{reset}"
+event_view_always_visible = True
+frame = color