From 26679e50664740c529cca52ff1f01cd445668ba9 Mon Sep 17 00:00:00 2001
From: Dan Burton <danburton.email@gmail.com>
Date: Tue, 24 Sep 2019 16:34:50 -0700
Subject: [PATCH] Add constraint "cabal2nix < 2.15"

---
 build-constraints.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 22b648de..e3999815 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4860,6 +4860,10 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/4846
         - xmonad-contrib < 0.16
 
+        # requires Cabal 3
+        - cabal2nix < 2.15.0
+
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of