[Xmonad] Xinerama screen numbering seems to have changed

It seems that they're numbered from 1 rather than 0, so everything works OK if I do hunk ./Config.hs 175 - | (key, sc) <- zip [xK_w, xK_e, xK_r] [0..] + | (key, sc) <- zip [xK_w, xK_e, xK_r] [1..] and make the appropriate change to dmenuXinerama. Is that a deliberate change? (I'm indifferent to it; I'm just slightly concerned I might have broken something in my local build.)