1/1: Building Main (Main.idr)
Error: While processing right hand side of dpairWithExtraInfoBad. When unifying:
    [MN 0, MN 0]
and:
    [MN 0]
Mismatch between: [MN 0] and [].

Main:27:27--27:36
 23 | dpairWithExtraInfoWorks : List (vars : List Name ** Expr vars)
 24 | dpairWithExtraInfoWorks = [([MN 0] ** CLocal {x=MN 0} (First {ns=[]}))]
 25 | 
 26 | dpairWithExtraInfoBad : List (vars : List Name ** Expr vars)
 27 | dpairWithExtraInfoBad = [([MN 0] ** CLocal {x=MN 0} (First {ns=[MN 0]}))]
                                ^^^^^^^^^