Break out python setup to separate file

scripts/install_python_packages

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+# Install python pipx / venv packages
+#
+# Usage: install_python_packages
+
+# Make sure to load `command_exists` helper as well as local paths
+# shellcheck source=../stowed-files/bash/.profile
+. "$HOME/dotfiles/stowed-files/bash/.profile"
+
+install_python_packages() {
+  declare -r venv_path="$HOME/.local/venv"
+
+  if ! command_exists pipx; then
+    >&2 echo "⨯ pipx not installed!"
+    exit 1
+  fi
+
+  echo "Installing global pipx packages …"
+  # `--quiet` added to `pipx` in late 2023, waiting for version bump
+  # in Debian stable
+  grep -v "^#" "$HOME/dotfiles/scripts/pipx-packages" | \
+    xargs --no-run-if-empty -L 1 pipx install --force
+  echo "Pipx packages installed!"
+
+  if [[ ! -d "${venv_path}" ]]; then
+    echo "Creating default venv …"
+    python3 -m venv "${venv_path}"
+    echo "Default venv created!"
+  fi
+
+  # shellcheck source=/dev/null
+  . "${venv_path}/bin/activate"
+
+  echo "Installing venv libraries …"
+  grep -v "^#" "$HOME/dotfiles/scripts/python-libraries" | \
+    xargs --no-run-if-empty \
+      "${venv_path}/bin/python" -m pip install --quiet --upgrade
+  echo "venv libraries installed!"
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+  install_python_packages "${@}"
+fi

scripts/setup_machine

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # Make your machine usable
 #
-# Usage: setup_machine [--apt-only] [--node-only] [--python-only]
+# Usage: setup_machine [--apt-only]
 
 set -euo pipefail
 IFS=$'\n\t'
@@ -12,7 +12,7 @@ export DEBIAN_FRONTEND=noninteractive
 has_updated=""
 
 usage() {
-  echo "Usage: setup_machine [--apt-only] [--node-only] [--python-only]"
+  echo "Usage: setup_machine [--apt-only]"
 }
 
 # Avoid running multiple times
@@ -72,26 +72,6 @@ install_apt_packages() {
   echo "Apt packages installed"
 }
 
-install_python_packages() {
-  declare -r venv_path="$HOME/.local/venv"
-
-  echo "Installing global python packages"
-  grep -v "^#" "$HOME/dotfiles/scripts/pipx-packages" | xargs --no-run-if-empty -L 1 pipx install --force
-  echo "Python packages installed"
-
-  if [[ ! -d "${venv_path}" ]]; then
-    echo "Creating default venv"
-    python3 -m venv "${venv_path}"
-  fi
-
-  # shellcheck source=/dev/null
-  . "${venv_path}/bin/activate"
-
-  echo "Installing venv libraries"
-  grep -v "^#" "$HOME/dotfiles/scripts/python-libraries" | xargs --no-run-if-empty "${venv_path}/bin/python" -m pip install --quiet --upgrade
-  echo "venv libraries installed"
-}
-
 is_package_installed() {
   if dpkg-query -l "$1" | grep -q "^ii"; then
     return 0
@@ -257,21 +237,13 @@ main() {
   declare -r local_profile_path="$HOME/.profile.local"
 
   declare apt_only=''
-  declare node_only=''
-  declare python_only=''
 
   # Parse arguments
   while [[ $# -gt 0 ]]; do
     case "$1" in
       --apt-only)
         apt_only=1
         ;;
-      --node-only)
-        node_only=1
-        ;;
-      --python-only)
-        python_only=1
-        ;;
       --help)
         usage
         exit 0
@@ -288,12 +260,6 @@ main() {
   if [[ -n "${apt_only}" ]]; then
     install_apt_packages
     exit 0
-  elif [[ -n "${node_only}" ]]; then
-    install_node_packages
-    exit 0
-  elif [[ -n "${python_only}" ]]; then
-    install_python_packages
-    exit 0
   fi
 
   check_prerequisites
@@ -325,7 +291,6 @@ main() {
   # Misc system configs
   increase_max_watchers
   pushd "${dotfiles_path}" > /dev/null
-  # shellcheck source=./lock_local_files
   "${dotfiles_path}/scripts/lock_local_files"
   popd > /dev/null
   set_default_applications
@@ -334,11 +299,9 @@ main() {
   setup_locale
 
   # Non-apt package managers
-  # shellcheck source=./install_node_packages
   "${dotfiles_path}/scripts/install_node_packages"
-  install_python_packages
+  "${dotfiles_path}/scripts/install_python_packages"
 
-  # shellcheck source=./generate_completions
   "${dotfiles_path}/scripts/generate_completions"
 
   echo "Setup complete!"