From fd1047a798d3e413472030a84afdba644dab4923 Mon Sep 17 00:00:00 2001
From: Michael Fellinger <michael.fellinger@iohk.io>
Date: Fri, 17 Apr 2020 17:05:01 +0200
Subject: [PATCH] crystal: add LLVM_CONFIG

---
 pkgs/development/compilers/crystal/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/compilers/crystal/default.nix b/pkgs/development/compilers/crystal/default.nix
index db22b668cf5..8f75692d883 100644
--- a/pkgs/development/compilers/crystal/default.nix
+++ b/pkgs/development/compilers/crystal/default.nix
@@ -108,6 +108,8 @@ let
       "all" "docs"
     ];
 
+    LLVM_CONFIG = "${llvm}/bin/llvm-config";
+
     FLAGS = [
       "--release"
       "--single-module" # needed for deterministic builds