From ce9b3a37232d1e9b2812b11439696d13e384661d Mon Sep 17 00:00:00 2001
From: heyarne <arne@schlueter.is>
Date: Tue, 4 Jan 2022 09:56:34 +0100
Subject: [PATCH] buildGraalVmNativeImage: enable utf-8 by default
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The tools built with buildGraalVmNativeImage have broken UTF-8 support
when not properly setting the locale, e.g.

$ bb -e '(prn "bépo àê")'
"b??po ????"

This commit sets the locale to en_US.UTF-8 by default, which fixes that.
---
 pkgs/build-support/build-graalvm-native-image/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/build-support/build-graalvm-native-image/default.nix b/pkgs/build-support/build-graalvm-native-image/default.nix
index 09b2d9f73a2b..3aedd61ea6ce 100644
--- a/pkgs/build-support/build-graalvm-native-image/default.nix
+++ b/pkgs/build-support/build-graalvm-native-image/default.nix
@@ -33,6 +33,8 @@ stdenv.mkDerivation (args // {
   nativeImageBuildArgs = nativeImageBuildArgs ++ extraNativeImageBuildArgs ++ [ graalvmXmx ];
 
   buildPhase = args.buildPhase or ''
+    export LC_ALL="en_US.UTF-8"
+
     runHook preBuild
 
     native-image ''${nativeImageBuildArgs[@]}