gnu: llama-cpp: Make the runtime check safer.

* gnu/packages/patches/llama-cpp-vulkan-optional.patch: Make the runtime check
safer.

Change-Id: If72148fb3e8bf500d35c0987126a788ec410cdbd

1 files changed, 12 insertions, 13 deletions

diff --git a/gnu/packages/patches/llama-cpp-vulkan-optional.patch b/gnu/packages/patches/llama-cpp-vulkan-optional.patch
index 9f91b2850d..0d62b5cf14 100644
--- a/gnu/packages/patches/llama-cpp-vulkan-optional.patch
+++ b/gnu/packages/patches/llama-cpp-vulkan-optional.patch
@@ -1,24 +1,23 @@
 Author: Danny Milosavljevic <[email protected]>
 Date: 2025-01-29
 License: Expat
+Subject: Make Vulkan optional
 
-diff -ru orig/llama.cpp/ggml/src/ggml-vulkan/ggml-vulkan.cpp llama.cpp/ggml/src/ggml-vulkan/ggml-vulkan.cpp
---- orig/llama.cpp/ggml/src/ggml-vulkan/ggml-vulkan.cpp	2025-01-29 06:24:10.922476480 +0100
-+++ llama.cpp/ggml/src/ggml-vulkan/ggml-vulkan.cpp	2025-01-29 06:26:45.973357439 +0100
-@@ -7317,9 +7317,13 @@
- }
- 
- static int ggml_vk_get_device_count() {
--    ggml_vk_instance_init();
+--- orig/llama.cpp/ggml/src/ggml-vulkan/ggml-vulkan.cpp	2025-01-29 10:24:10.922476480 +0100
++++ llama.cpp/ggml/src/ggml-vulkan/ggml-vulkan.cpp	2025-01-29 22:33:19.955087552 +0100
+@@ -8174,8 +8174,13 @@
+         /* .iface       = */ ggml_backend_vk_reg_i,
+         /* .context     = */ nullptr,
+     };
 -
--    return vk_instance.device_indices.size();
+-    return &reg;
 +    try {
 +        ggml_vk_instance_init();
-+        return vk_instance.device_indices.size();
++        return &reg;
 +    } catch (const vk::SystemError& e) {
-+        std::cerr << "ggml_vulkan: Error: System error" << std::endl;
-+        return 0;
++        VK_LOG_DEBUG("ggml_vk_get_device_count() -> Error: System error: " << e.what());
++        return nullptr;
 +    }
  }
  
- static void ggml_vk_get_device_description(int device, char * description, size_t description_size) {
+ // Extension availability