krunkit: move install-vulkan-gpu.sh to docs

The script seems immature to be included in the driver package.

The script didn't work for me on my MacBook Pro 2024 with Apple M4 Max:
```
cc1: sorry, unimplemented: no support for ‘sme’ without ‘sve2’
```

Signed-off-by: Akihiro Suda <[email protected]>

Author: AkihiroSuda

pkg/driver/krunkit/hack/install-vulkan-gpu.sh

@@ -42,9 +42,6 @@ type LimaKrunkitDriver struct {
 var (
 	_      driver.Driver   = (*LimaKrunkitDriver)(nil)
 	vmType limatype.VMType = "krunkit"
-
-	//go:embed hack/install-vulkan-gpu.sh
-	gpuProvisionScript string
 )
 
 func New() *LimaKrunkitDriver {
@@ -207,25 +204,6 @@ func (l *LimaKrunkitDriver) FillConfig(_ context.Context, cfg *limatype.LimaYAML
 
 	cfg.VMType = ptr.Of(vmType)
 
-	if isFedoraConfigured(cfg) {
-		gpuInstallScript := limatype.Provision{
-			Mode:   limatype.ProvisionModeData,
-			Script: ptr.Of(gpuProvisionScript),
-			ProvisionData: limatype.ProvisionData{
-				Content:     ptr.Of(gpuProvisionScript),
-				Path:        ptr.Of("/usr/local/bin/install-vulkan-gpu.sh"),
-				Permissions: ptr.Of("0755"),
-				Overwrite:   ptr.Of(false),
-				Owner:       cfg.User.Name,
-			},
-		}
-
-		cfg.Provision = append(cfg.Provision, gpuInstallScript)
-		cfg.Message = `To enable GPU support (Vulkan) for Krunkit to use AI models without containers, run the following command inside the VM:
-    ` + "\x1b[32m" + `sudo install-vulkan-gpu.sh` + "\x1b[0m" + `
-` + "\x1b[31m" + `Ignore this if already done` + "\x1b[0m" + "\n"
-	}
-
 	return validateConfig(cfg)
 }
 

pkg/driver/krunkit/krunkit_driver_darwin_arm64.go

@@ -101,10 +101,64 @@ mountType: virtiofs
 
 Once inside the VM, install GPU/Vulkan support:
 
+<details><summary>Click to expand script</summary>
+
 ```bash
-sudo install-vulkan-gpu.sh
+#!/bin/bash
+# SPDX-FileCopyrightText: Copyright The Lima Authors
+# SPDX-License-Identifier: Apache-2.0
+
+set -eu -o pipefail
+
+# Install required packages
+dnf install -y dnf-plugins-core dnf-plugin-versionlock llvm18-libs
+
+# Install Vulkan and Mesa base packages
+dnf install -y \
+	mesa-vulkan-drivers \
+	vulkan-loader-devel \
+	vulkan-headers \
+	vulkan-tools \
+	vulkan-loader \
+	glslc
+
+# Enable COPR repo with patched Mesa for Venus support
+dnf copr enable -y slp/mesa-krunkit fedora-40-aarch64
+
+# Downgrade to patched Mesa version from COPR
+dnf downgrade -y mesa-vulkan-drivers.aarch64 \
+	--repo=copr:copr.fedorainfracloud.org:slp:mesa-krunkit
+
+# Lock Mesa version to prevent automatic upgrades
+dnf versionlock add mesa-vulkan-drivers
+
+# Clean up
+dnf clean all
+
+echo "Installing llama.cpp with Vulkan support..."
+# Build and install llama.cpp with Vulkan support
+dnf install -y git cmake clang curl-devel glslc vulkan-devel virglrenderer
+(
+  cd ~
+  git clone https://github.com/ggml-org/llama.cpp
+  (
+    cd llama.cpp
+    git reset --hard 97340b4c9924be86704dbf155e97c8319849ee19
+    cmake -B build -DGGML_VULKAN=ON -DGGML_CCACHE=OFF -DCMAKE_INSTALL_PREFIX=/usr
+    # FIXME: the build seems to fail on Apple M4 Max (and probably on other processors too).
+    # Error:
+    #   cc1: sorry, unimplemented: no support for ‘sme’ without ‘sve2’
+    cmake --build build --config Release -j8
+    cmake --install build
+  )
+  rm -fr llama.cpp
+)
+
+echo "Successfully installed llama.cpp with Vulkan support. Use 'llama-cli' app with .gguf models."
 ```
 
+</details>
+
 The script will prompt to build and install `llama.cpp` with Venus support from source.
 
 After installation, run: