Pattern matching in val statements is not supported

In 0.13.7+,

val (a, b) = (0, 1)

results in the error.

Pattern matching in val statements is not supported

This worked in 0.13.6. (Probably related to #1661.)

Anyway, it would be great if this worked.

My personal use case was sbt-cross.

[dotta]

I’ve just hit this, and the main problem form me was that the error error was not helpful at all

[lagom/build.sbt]:0: Pattern matching in val statements is not supported

Also, it turns out that in my case the reason was that I’ve defined an invalid identifier

lazy val play-json = (project in file("play-json"))

I simply forgot to surround the name with backticks.

[SethTisue]

That sounds like a bug on our part

arguably not, lazy val play-json = ... is syntactically a pattern match:

scala> object - { def unapply(x: Any) = Some((x, x)) }
defined object $minus

scala> val play-json = 3
play: Any = 3
json: Any = 3