checking package dependencies
compiling EContextReductionVar1.bs
Error: "EContextReductionVar1.bs", line 28, column 0: (T0031)
  The contexts for this expression could not be resolved because there are no
  instances of the form:
    Prelude.Bits EContextReductionVar1.MyStruct a__
  The context was implied by expressions at the following positions:
    "EContextReductionVar1.bs", line 33, column 25