initial bookworm support

scripts/install_birdnet.sh

@@ -9,6 +9,8 @@ export my_dir=$my_dir
 
 cd $my_dir/scripts || exit 1
 
+source install_helpers.sh
+
 if [ "$(uname -m)" != "aarch64" ];then
   echo "BirdNET-Pi requires a 64-bit OS.
 It looks like your operating system is using $(uname -m),
@@ -28,7 +30,8 @@ install_birdnet() {
   echo "Establishing a python virtual environment"
   python3 -m venv birdnet
   source ./birdnet/bin/activate
-  pip3 install -U -r $HOME/BirdNET-Pi/requirements.txt
+  get_tf_whl
+  pip3 install -U -r ./requirements_custom.txt
 }
 
 [ -d ${RECS_DIR} ] || mkdir -p ${RECS_DIR} &> /dev/null