autorandr: Install manpage

pkgs/tools/misc/autorandr/default.nix

@@ -21,6 +21,8 @@ in
         --replace '["xrandr"]' '["${xrandr}/bin/xrandr"]'
     '';
 
+    outputs = [ "out" "man" ];
+
     installPhase = ''
       runHook preInstall
       make install TARGETS='autorandr' PREFIX=$out
@@ -29,6 +31,8 @@ in
 
       make install TARGETS='autostart_config' PREFIX=$out DESTDIR=$out
 
+      make install TARGETS='manpage' PREFIX=$man
+
       ${if systemd != null then ''
         make install TARGETS='systemd udev' PREFIX=$out DESTDIR=$out \
           SYSTEMD_UNIT_DIR=/lib/systemd/system \