From ed6e240d32e6359be3947bdd8c852876e4464e4f Mon Sep 17 00:00:00 2001
From: Tom Westerhout <14264576+twesterhout@users.noreply.github.com>
Date: Mon, 21 Aug 2023 19:34:53 +0200
Subject: halide: disable float16 support on aarch16-linux

---
 pkgs/development/compilers/halide/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/compilers/halide/default.nix b/pkgs/development/compilers/halide/default.nix
index 8a93b3cbb9d13..b508433bf94b9 100644
--- a/pkgs/development/compilers/halide/default.nix
+++ b/pkgs/development/compilers/halide/default.nix
@@ -27,6 +27,15 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-lJQrXkJgBmGb/QMSxwuPkkHOSgEDowLWzIolp1km2Y8=";
   };
 
+  postPatch = ''
+    # See https://github.com/halide/Halide/issues/7785
+    substituteInPlace 'src/runtime/HalideRuntime.h' \
+      --replace '#if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)
+    #define HALIDE_CPP_COMPILER_HAS_FLOAT16' \
+                '#if defined(__x86_64__) || defined(__i386__)
+    #define HALIDE_CPP_COMPILER_HAS_FLOAT16'
+  '';
+
   cmakeFlags = [
     "-DWARNINGS_AS_ERRORS=OFF"
     "-DWITH_PYTHON_BINDINGS=OFF"
-- 
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