1/1: Building boom (boom.idr) boom.idr:23:42--23:66:While processing right hand side of with block in eraseVar at boom.idr:23:3--24:3: Can't solve constraint between: S (countGreater thr xs) and countGreater thr xs at: 23 eraseVar thr (x :: xs) (FS i) | True = FS <$> eraseVar thr xs i ^^^^^^^^^^^^^^^^^^^^^^^^