-Wunused consults -Wmacros, and it looks like -Xlint:missing-interpolator attempts to avoid reporting on macro expansion. Maybe typer could just tell reporter not to report warnings.

fyi @milessabin

I'd seen this and assumed the linter rule was trigger happy and disabled it.

There's nothing I can do here because the structure is essential to the encoding of Lazy. It's a shame this wasn't picked up in the community build.

The error message was introduced by scala/scala#8590

volunteer to attempt to improve the situation?

Maybe we can find a secret handshake to sidestep the warning? It would also be good not to warn if the method call is written by the user, not synthesized by the compiler:

scala> implicit def f(x: => Int): Int = x
warning: 1 feature warning; for details, enable `:setting -feature` or `:replay -feature`
def f(x: => Int): Int

scala> { println("hi"); f(1) }
                         ^
       warning: Block result was adapted via implicit conversion (method f) taking a by-name parameter
hi
val res0: Int = 1

Alternatively, the shapeless macro could add a : @nowarn("cat=lint-byname-implicit") ascription.

scala> { println("hi"); f(1) } : @annotation.nowarn("cat=lint-byname-implicit")
hi

If anyone else is trying to figure out how to suppress just this one type of lint warning:

-Xlint:-byname-implicit