make cli requirements optional

.devcontainer/devcontainer.json

@@ -8,7 +8,7 @@
     "-e",
     "GIT_EDITOR=code --wait"
   ],
-  "postCreateCommand": "pip3 install -e .[dev]",
+  "postCreateCommand": "pip3 install -e .[cli,dev]",
   "customizations": {
     "vscode": {
       "extensions": [

.github/workflows/tests.yaml

@@ -9,7 +9,7 @@ on:
 jobs:
   tests:
     name: ${{ matrix.session }} ${{ matrix.python-version }}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
@@ -31,7 +31,7 @@ jobs:
         run: pip install pip
 
       - name: Setup
-        run: pip install -e .[dev]
+        run: pip install -e .[cli,dev]
 
       - name: Run Pytest
         run: pytest tests

README.md

@@ -27,7 +27,8 @@ it's a vacuum.
 
 If you have a recent version of Python 3, you should be able to
 do `pip install py-sucks` to get the most recently released version of
-this.
+this. In order to use the command line (cli) tool, you need to install
+the additional cli requirements by `pip install py-sucks[cli]`
 
 ## Usage
 

setup.py

@@ -48,16 +48,15 @@
     # https://packaging.python.org/en/latest/requirements.html
     install_requires=[
         "sleekxmppfs>=1.4.1",
-        "click>=6",
         "requests>=2.18",
         "pycryptodome>=3.4",
-        "pycountry-convert>=0.5",
     ],
     # List additional groups of dependencies here (e.g. development
     # dependencies). You can install these using the following syntax,
     # for example:
     # $ pip install -e .[dev,test]
     extras_require={
+        "cli": ["click>=6", "pycountry-convert>=0.5"],
         "dev": ["pytest", "requests-mock>=1.3"],
     },
     # If there are data files included in your packages that need to be

sucks/cli.py

@@ -2,11 +2,19 @@
 import itertools
 import os
 import platform
+import sys
 import random
 import re
 
-import click
-from pycountry_convert import country_alpha2_to_continent_code
+try:
+    import click
+    from pycountry_convert import country_alpha2_to_continent_code
+except ImportError:
+    print(
+        "The extra dependencies are missing, "
+        "please use 'pip install py-sucks[cli]' to install them."
+    )
+    sys.exit(1)
 
 from sucks import *