From 0aee301acb415f305ac336083d14b2dc528a20be Mon Sep 17 00:00:00 2001
From: Kira Bruneau <kira.bruneau@pm.me>
Date: Tue, 16 May 2023 13:52:09 -0400
Subject: [PATCH] llvmPackages_rocm.llvm: build on big-parallel

All other LLVM packages run on big-parallel, so we should be
consistent when building the ROCm fork.
---
 pkgs/development/compilers/llvm/rocm/default.nix | 1 +
 pkgs/development/compilers/llvm/rocm/llvm.nix    | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/pkgs/development/compilers/llvm/rocm/default.nix b/pkgs/development/compilers/llvm/rocm/default.nix
index 7c82cc4330b..b6df2354f5e 100644
--- a/pkgs/development/compilers/llvm/rocm/default.nix
+++ b/pkgs/development/compilers/llvm/rocm/default.nix
@@ -29,6 +29,7 @@ let
   # Stage 1
   # Base
   llvm = callPackage ./llvm.nix {
+    requiredSystemFeatures = [ "big-parallel" ];
     isBroken = stdenv.isAarch64; # https://github.com/RadeonOpenCompute/ROCm/issues/1831#issuecomment-1278205344
   };
 
diff --git a/pkgs/development/compilers/llvm/rocm/llvm.nix b/pkgs/development/compilers/llvm/rocm/llvm.nix
index 6092bc1a9fc..5475f411304 100644
--- a/pkgs/development/compilers/llvm/rocm/llvm.nix
+++ b/pkgs/development/compilers/llvm/rocm/llvm.nix
@@ -39,6 +39,7 @@
   )
 )]
 , extraPostInstall ? ""
+, requiredSystemFeatures ? [ ]
 , extraLicenses ? [ ]
 , isBroken ? false
 }:
@@ -158,6 +159,8 @@ in stdenv.mkDerivation (finalAttrs: {
     };
   };
 
+  inherit requiredSystemFeatures;
+
   meta = with lib; {
     description = "ROCm fork of the LLVM compiler infrastructure";
     homepage = "https://github.com/RadeonOpenCompute/llvm-project";