From 5a568ea36fc596b349ac088418c627d4a1488ce0 Mon Sep 17 00:00:00 2001
From: sternenseemann <sternenseemann@systemli.org>
Date: Sun, 21 Nov 2021 23:33:39 +0100
Subject: [PATCH] haskell.compiler.ghc901: drop LLVM version to 9

GHC 9.0.1 only supports LLVM 9 and spews a lot of warnings about LLVM 10
when using the LLVM backend atm.

See also: https://www.haskell.org/ghc/download_ghc_9_0_1.html
---
 pkgs/top-level/haskell-packages.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index b5d214c579ce..c96c166d5eaf 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -111,8 +111,8 @@ in {
           packages.ghc8107Binary;
       inherit (buildPackages.python3Packages) sphinx;
       inherit (buildPackages.darwin) autoSignDarwinBinariesHook;
-      buildLlvmPackages = buildPackages.llvmPackages_10;
-      llvmPackages = pkgs.llvmPackages_10;
+      buildLlvmPackages = buildPackages.llvmPackages_9;
+      llvmPackages = pkgs.llvmPackages_9;
     };
     ghc921 = callPackage ../development/compilers/ghc/9.2.1.nix {
       bootPkgs =