http://phandroid.com/2014/06/27/android-ls-material-keyboard-now-available-on-google-play/ since google keyboard is the main keyboard for the nexus device the other file posted on XDA will not install. Download the keyboard from the link and set to material and you have working android L keyboard.
Sent from my XT1058 using XDA Free mobile app
Sent from my XT1058 using XDA Free mobile app