xmonad: use monospace font

profiles/graphical/xmonad/_xmonad.nix

@@ -8,7 +8,7 @@
 
   -- function to call dzen2 and show volume in the middle of the screen
   dzcall :: String
-  dzcall = "${dzvol}/bin/dzvol -fn 'DejaVu Sans Mono for Powerline-16:normal'"
+  dzcall = "${dzvol}/bin/dzvol -fn 'monospace'"
 
   myAutostart :: X ()
   myAutostart = do
@@ -101,7 +101,7 @@
       )
     -- dmenu frontend for network manager
     , ( ( myModKey                              , xK_n                    )
-      , spawn "networkmanager_dmenu -fn 'DejaVu Sans Mono for Powerline-16:normal'"
+      , spawn "networkmanager_dmenu -fn 'monospace'"
       )
     ]
 ''

profiles/graphical/xmonad/scripts/stoggle

@@ -24,7 +24,7 @@ dzen2_dpms_state () {
     new_dpms_state=$1
 
   print "Power Management ${new_dpms_state}" \
-    | dzen2 -fn "DejaVu Sans Mono for Powerline-16:normal" -p 2 -tw ${WIDTH} -x ${XPOS} -y ${YPOS}
+    | dzen2 -fn "monospace" -p 2 -tw ${WIDTH} -x ${XPOS} -y ${YPOS}
 }
 
   case $dpms_state in