eta-hackage Patch needed to install Reflex? Dependency on haskell-src-exts-1.20.3

I get the following error when trying to build reflex for an Etlas project. I am quite new to this, could you help me figure out if a patch is needed? Here is part of the log:

Configuring library for haskell-src-exts-1.20.3.. Preprocessing library for haskell-src-exts-1.20.3.. unused rules: 777 Building library for haskell-src-exts-1.20.3.. [ 4 of 18] Compiling Language.Haskell.Exts.Syntaxeta: panic! (the 'impossible' happened) (Eta version 0.8.6b5): Error when generating class 'haskell_src_exts/language/haskell/exts/Syntax': putClassFile: ConstPool size exceeds 65,535 constants: 134672

Please report this as a Eta bug: http://github.com/typelead/eta/issues

etlas: Failed to build haskell-src-exts-1.20.3

Apr 12 '19 10:04 Zenleaf

@Zenleaf Yes, haskell-src-exts requires a patch to split code into separate files until we find an automated way to fix the problem. This was introduced in recent versions of Eta to let you know at compile-time that something will crash at runtime.

Apr 12 '19 11:04 rahulmutt

Awesome, thought so. Would like to give it a try when I have time.@rahulmutt

Apr 12 '19 14:04 Zenleaf