From 11056076185446fe8d8e563104ffa70827250215 Mon Sep 17 00:00:00 2001
From: Florian Klink <flokli@flokli.de>
Date: Wed, 8 Apr 2026 16:09:19 +0100
Subject: [PATCH] python3Packages.lightgbm: fix cuda build

nvcc needs `-std=c++14` to successfully compile.
---
 pkgs/development/python-modules/lightgbm/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/python-modules/lightgbm/default.nix b/pkgs/development/python-modules/lightgbm/default.nix
index 46016b92469e..ca051551f394 100644
--- a/pkgs/development/python-modules/lightgbm/default.nix
+++ b/pkgs/development/python-modules/lightgbm/default.nix
@@ -93,6 +93,10 @@ buildPythonPackage rec {
     # Set in pyproject.toml for `cmake.args` in `[tool.scikit-build]`,
     # but not set by our hooks.
     (lib.cmakeBool "__BUILD_FOR_PYTHON" true)
+  ]
+  ++ lib.optionals cudaSupport [
+    # build fails otherwise
+    (lib.cmakeFeature "CMAKE_CUDA_STANDARD" "14")
   ];
 
   optional-dependencies = {