ci deploy: instructions for GitPython

bin/ci-deploy.py

@@ -4,12 +4,22 @@ import sys
 import os
 import os.path
 import pickle
-import git
 import requests
 import shlex
 import subprocess
 import time
 
+try:
+    import git
+except ImportError:
+    print("Need GitPython:")
+    print("* Arch: pacman -S python-gitpython")
+    print("* Debian: apt install python3-git")
+    print("* Pip: pip install GitPython")
+    print("* Source: https://github.com/gitpython-developers/GitPython")
+    print()
+    raise
+
 
 ASSETS_FILES = [
     ".github/workflows/assets.yml",
@@ -36,6 +46,7 @@ ASSETS_BUILD_URL = "https://api.github.com/repos/ornicar/lila/actions/workflows/
 
 SERVER_BUILD_URL = "https://api.github.com/repos/ornicar/lila/actions/workflows/server.yml/runs"
 
+
 def asset_profile(ssh, *,
                   artifact_dir="/home/lichess-artifacts",
                   deploy_dir="/home/lichess-deploy",