respect aliases SKIP when installing environments

pre_commit/commands/run.py

@@ -420,7 +420,11 @@ def run(
             return 1
 
         skips = _get_skips(environ)
-        to_install = [hook for hook in hooks if hook.id not in skips]
+        to_install = [
+            hook
+            for hook in hooks
+            if hook.id not in skips and hook.alias not in skips
+        ]
         install_hook_envs(to_install, store)
 
         return _run_hooks(config, hooks, skips, args)

tests/commands/run_test.py

@@ -618,11 +618,19 @@ def test_skip_bypasses_installation(cap_out, store, repo_with_passing_hook):
         'hooks': [
             {
                 'id': 'skipme',
-                'name': 'skipme',
+                'name': 'skipme-1',
                 'entry': 'skipme',
+                'alias': 'skipme-1',
                 'language': 'python',
                 'additional_dependencies': ['/pre-commit-does-not-exist'],
             },
+            {
+                'id': 'skipme',
+                'name': 'skipme-2',
+                'entry': 'skipme',
+                'alias': 'skipme-2',
+                'language': 'python',
+            },
         ],
     }
     add_config_to_repo(repo_with_passing_hook, config)
@@ -634,6 +642,13 @@ def test_skip_bypasses_installation(cap_out, store, repo_with_passing_hook):
     )
     assert ret == 0
 
+    ret, printed = _do_run(
+        cap_out, store, repo_with_passing_hook,
+        run_opts(all_files=True),
+        {'SKIP': 'skipme-1'},
+    )
+    assert ret == 1
+
 
 def test_hook_id_not_in_non_verbose_output(
         cap_out, store, repo_with_passing_hook,