Merge pull request #31 from mcdonnnj/improvement/adjust_python_installation_on_linux_runners

Only install Python from `deadsnakes` on Ubuntu versions prior to 22.04

Author: JarLob

monitor/setup.sh

@@ -112,9 +112,16 @@ if [ "$RUNNER_OS" = "macOS" ]; then
 
 elif [ "$RUNNER_OS" = "Linux" ]; then
 
+  # ubuntu 22.04 and later install python 3.10 or later by default
+  python_package="python3"
+
   # install python 3.10, otherwise ubuntu 20.04 installs 3.8 and we won't get the latest mitmproxy with important bug fixes
-  sudo add-apt-repository ppa:deadsnakes/ppa -y
-  sudo apt install -y python3.10-venv
+  if (( "$(lsb_release --short --release | cut --delimiter='.' --fields=1)" < 22 )); then
+    sudo add-apt-repository ppa:deadsnakes/ppa -y
+    python_package="python3.10"
+  fi
+
+  sudo apt install -y "$python_package"-venv
 
   # create mitmproxyuser, otherwise proxy won't intercept local trafic from the same user
   sudo useradd --create-home mitmproxyuser
@@ -125,7 +132,7 @@ elif [ "$RUNNER_OS" = "Linux" ]; then
                                        git clone -b main https://github.com/mitmproxy/mitmproxy.git && \
                                        cd mitmproxy && \
                                        git checkout 5353df5f1eeaf5fc36d9b5f7024199c888aed116 && \
-                                       python3.10 -m venv venv && \
+                                       "$(command -v python3.10 || command -v python3)" -m venv venv && \
                                        venv/bin/pip install -e ".[dev]" '
 
   sudo cp mitm_plugin.py /home/mitmproxyuser/mitm_plugin.py