nixos-rebuild: document override-input

authored by Jörg Thalheim and committed by tomberek 26c487ee 3a745b2c

+4
+4
nixos/doc/manual/man-nixos-rebuild.xml
··· 91 <option>--flake</option> <replaceable>flake-uri</replaceable> 92 </arg> 93 94 <sbr /> 95 96 <arg>
··· 91 <option>--flake</option> <replaceable>flake-uri</replaceable> 92 </arg> 93 94 + <arg> 95 + <option>--override-input</option> <replaceable>input-name</replaceable> <replaceable>flake-uri</replaceable> 96 + </arg> 97 + 98 <sbr /> 99 100 <arg>