docs: section how to update system

2022-02-07 07:41:45 +01:00 · 2022-02-07 07:41:45 +01:00 · 5b208b42b2
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@ -228,3 +228,18 @@ in your system configuration and
 ----

 in your Home Manager configuration.
+
+[[sec-updating]]
+=== Updating
+
+If you have installed Home Manager using the Nix channel method
+then updating Home Manager is done by first updating the channel.
+You can then switch to the updated Home Manager environment.
+
+[source,console]
+----
+$ nix-channel --update
+…
+unpacking channels...
+$ home-manager switch
+----