1/1: Building Test (Test.idr)
Warning: Fixity declaration 'infixr 0 =@' does not have an export modifier, and
will become private by default in a future version.
To expose it outside of its module, write 'export infixr 0 =@'. If you
intend to keep it private, write 'private infixr 0 =@'.

Test:2:1--2:12
 1 | 
 2 | infixr 0 =@
     ^^^^^^^^^^^