llama-cpp: fix build version and commit info (#432881)

pkgs/by-name/ll/llama-cpp/package.nix

@@ -99,10 +99,6 @@ effectiveStdenv.mkDerivation (finalAttrs: {
       substituteInPlace ./ggml/src/ggml-metal/ggml-metal.m \
         --replace-fail '[bundle pathForResource:@"ggml-metal" ofType:@"metal"];' "@\"$out/bin/ggml-metal.metal\";"
     fi
-
-    substituteInPlace ./scripts/build-info.sh \
-      --replace-fail 'build_number="0"' 'build_number="${finalAttrs.version}"' \
-      --replace-fail 'build_commit="unknown"' "build_commit=\"$(cat COMMIT)\""
   '';
 
   nativeBuildInputs = [
@@ -124,6 +120,10 @@ effectiveStdenv.mkDerivation (finalAttrs: {
     ++ optionals vulkanSupport vulkanBuildInputs
     ++ [ curl ];
 
+  preConfigure = ''
+    prependToVar cmakeFlags "-DLLAMA_BUILD_COMMIT:STRING=$(cat COMMIT)"
+  '';
+
   cmakeFlags = [
     # -march=native is non-deterministic; override with platform-specific flags if needed
     (cmakeBool "GGML_NATIVE" false)
@@ -137,6 +137,7 @@ effectiveStdenv.mkDerivation (finalAttrs: {
     (cmakeBool "GGML_METAL" metalSupport)
     (cmakeBool "GGML_RPC" rpcSupport)
     (cmakeBool "GGML_VULKAN" vulkanSupport)
+    (cmakeFeature "LLAMA_BUILD_NUMBER" finalAttrs.version)
   ]
   ++ optionals cudaSupport [
     (cmakeFeature "CMAKE_CUDA_ARCHITECTURES" cudaPackages.flags.cmakeCudaArchitecturesString)