LFInfo missing with JavaScript backend
The JS backend produces the following warnings because it doesn't compute the LambdaFormInfo
required to write the interface file:
+WARNING:
+ updateDecl
+ Name without LFInfo: foo
+ Call stack:
+ CallStack (from HasCallStack):
+ warnPprTrace, called at compiler/GHC/Iface/Make.hs:<line>:<column> in <package-id>:GHC.Iface.Make