From 68b63c306a6583d41d03207fb3c8b08abc56c262 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Thu, 14 Dec 2023 14:53:49 +0100
Subject: [PATCH] systemd: fix build for riscv32

---
 pkgs/os-specific/linux/systemd/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/os-specific/linux/systemd/default.nix b/pkgs/os-specific/linux/systemd/default.nix
index 23f875d2dc46..39ec1a6eac17 100644
--- a/pkgs/os-specific/linux/systemd/default.nix
+++ b/pkgs/os-specific/linux/systemd/default.nix
@@ -89,7 +89,11 @@
 , withAnalyze ? true
 , withApparmor ? true
 , withAudit ? true
-, withBootloader ? withEfi && !stdenv.hostPlatform.isMusl # compiles systemd-boot, assumes EFI is available.
+  # compiles systemd-boot, assumes EFI is available.
+, withBootloader ? withEfi
+    && !stdenv.hostPlatform.isMusl
+    # "Unknown 64-bit data model"
+    && !stdenv.hostPlatform.isRiscV32
 , withCompression ? true  # adds bzip2, lz4, xz and zstd
 , withCoredump ? true
 , withCryptsetup ? true
@@ -108,6 +112,8 @@
     && !stdenv.hostPlatform.isMips64   # see https://github.com/NixOS/nixpkgs/pull/194149#issuecomment-1266642211
     # can't find gnu/stubs-32.h
     && (stdenv.hostPlatform.isPower64 -> stdenv.hostPlatform.isBigEndian)
+    # https://reviews.llvm.org/D43106#1019077
+    && (stdenv.hostPlatform.isRiscV32 -> stdenv.cc.isClang)
     # buildPackages.targetPackages.llvmPackages is the same as llvmPackages,
     # but we do it this way to avoid taking llvmPackages as an input, and
     # risking making it too easy to ignore the above comment about llvmPackages.