From 303977634c10e495cdb4855ffe00fc02ac9801c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20de=20Kok?= <me@danieldk.eu>
Date: Sat, 1 May 2021 11:41:47 +0200
Subject: [PATCH] libtorch-bin: fix false CUDA dependency in passthru test

The passthru test used the CUDA toolkit for the CUDA stub
unconditionally, also requiring the cudatoolkit derivation when
cudaSupport = false.
---
 .../libraries/science/math/libtorch/test/default.nix         | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/science/math/libtorch/test/default.nix b/pkgs/development/libraries/science/math/libtorch/test/default.nix
index 60f9b5ad8846..eaea649d4340 100644
--- a/pkgs/development/libraries/science/math/libtorch/test/default.nix
+++ b/pkgs/development/libraries/science/math/libtorch/test/default.nix
@@ -42,8 +42,9 @@ in stdenv.mkDerivation {
     touch $out
   '';
 
-  checkPhase = ''
+  checkPhase = lib.optionalString cudaSupport ''
     LD_LIBRARY_PATH=${cudaStub}''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH \
-      ./test
+  '' + ''
+    ./test
   '';
 }