Install various shells ON CI so we can test with them

Author: kovidgoyal

.github/workflows/ci.py

@@ -35,8 +35,9 @@ def install_deps():
     else:
         run('sudo apt-get update')
         run('sudo apt-get install -y libgl1-mesa-dev libxi-dev libxrandr-dev libxinerama-dev ca-certificates'
-            ' libxcursor-dev libxcb-xkb-dev libdbus-1-dev libxkbcommon-dev libharfbuzz-dev libx11-xcb-dev'
-            ' libpng-dev liblcms2-dev libfontconfig-dev libxkbcommon-x11-dev libcanberra-dev librsync-dev uuid-dev')
+            ' libxcursor-dev libxcb-xkb-dev libdbus-1-dev libxkbcommon-dev libharfbuzz-dev libx11-xcb-dev zsh'
+            ' libpng-dev liblcms2-dev libfontconfig-dev libxkbcommon-x11-dev libcanberra-dev librsync-dev uuid-dev'
+            ' zsh bash dash fish')
     if is_bundle:
         install_bundle()
     else:

kitty_tests/shell_integration.py

@@ -3,6 +3,8 @@
 
 
 import os
+import shutil
+import unittest
 from contextlib import contextmanager
 from tempfile import TemporaryDirectory
 
@@ -43,6 +45,7 @@ def run_shell(self, shell='zsh', rc=''):
                 i -= 1
             yield pty
 
+    @unittest.skipUnless(shutil.which('zsh'), 'zsh not installed')
     def test_zsh_integration(self):
         ps1, rps1 = 'left>', '<right'
         with self.run_shell(