Remove broken ipex auto detection

installer.py

@@ -261,7 +261,7 @@ def check_torch():
         os.environ.setdefault('PYTORCH_HIP_ALLOC_CONF', 'garbage_collection_threshold:0.9,max_split_size_mb:512')
         torch_command = os.environ.get('TORCH_COMMAND', 'torch==2.0.0 torchvision==0.15.1 --index-url https://download.pytorch.org/whl/rocm5.4.2')
         xformers_package = os.environ.get('XFORMERS_PACKAGE', 'none')
-    elif allow_ipex and (shutil.which('sycl-ls') is not None or os.path.exists('/opt/intel/oneapi') or args.use_ipex):
+    elif allow_ipex and args.use_ipex and shutil.which('sycl-ls') is not None:
         log.info('Intel OneAPI Toolkit detected')
         torch_command = os.environ.get('TORCH_COMMAND', 'torch==1.13.0a0 torchvision==0.14.1a0 intel_extension_for_pytorch==1.13.120+xpu -f https://developer.intel.com/ipex-whl-stable-xpu')
         xformers_package = os.environ.get('XFORMERS_PACKAGE', 'none')

webui.sh

@@ -81,10 +81,15 @@ else
     exit 1
 fi
 
-if [[ "$@" == *"--use-ipex"* ]]
+#Set OneAPI environmet if it's not set by the user
+if [[ "$@" == *"--use-ipex"* ]] && ! [ -x "$(command -v sycl-ls)" ]
 then
-    echo "Setting OneAPI enviroment"
-    source /opt/intel/oneapi/setvars.sh
+    echo "Setting OneAPI environment"
+    if [[ -z "$ONEAPI_ROOT" ]]
+    then
+        ONEAPI_ROOT=/opt/intel/oneapi
+    fi
+    source $ONEAPI_ROOT/setvars.sh
 fi
 
 if [[ ! -z "${ACCELERATE}" ]] && [ ${ACCELERATE}="True" ] && [ -x "$(command -v accelerate)" ]