Revert "switch pyenv to uv (#248)"

This reverts commit 7d1a421.

userspace/openpilot_python_dependencies.sh

@@ -2,23 +2,20 @@
 
 echo "Installing python for openpilot"
 
-echo "installing uv..."
-curl -LsSf https://astral.sh/uv/install.sh | sh
-UV_BIN='$HOME/.cargo/env'
-ADD_PATH_CMD=". \"$UV_BIN\""
-eval $ADD_PATH_CMD
+# Install pyenv
+export PYENV_ROOT="/usr/local/pyenv"
+curl https://pyenv.run | bash
+export PATH="$PYENV_ROOT/bin:$PATH"
+eval "$(pyenv init -)"
 
 PYTHON_VERSION="3.11.4"
 if [ "$(uname -p)" == "aarch64" ]; then
-  uv python install $PYTHON_VERSION
+  pyenv install --verbose $PYTHON_VERSION
 else
-  MAKEFLAGS="-j1" MAKE_OPTS="-j1" taskset --cpu-list 0 uv python install --verbose $PYTHON_VERSION
+  MAKEFLAGS="-j1" MAKE_OPTS="-j1" taskset --cpu-list 0 pyenv install --verbose $PYTHON_VERSION
 fi
 
-# uv requires virtual env either managed or system before installing dependencies
-uv venv --python-preference only-system
-# need to activate virtual env otherwise call to uv pip install throws error,
-# error: No virtual or system environment found for path ...
-source .venv/bin/activate
-# install dependencies using system python 
-uv pip install --python=$(which python) --no-cache-dir --upgrade pip
+echo "Setting global python version"
+pyenv global $PYTHON_VERSION
+
+pip3 install --no-cache-dir --upgrade pip uv