<div dir="ltr">Dear devs,<br><br>The `NumericUnderscores` extension was added to Cabal for ghc 8.6. [1]<br>I'm sending this mail referring to `BlockArguments`. [2]<br><br>[1] <a href="https://github.com/haskell/cabal/pull/5130">https://github.com/haskell/cabal/pull/5130</a><br>[2] <a href="https://mail.haskell.org/pipermail/ghc-devs/2018-February/015341.html">https://mail.haskell.org/pipermail/ghc-devs/2018-February/015341.html</a><br><br>Regards,<br>Takenobu<br><br></div>