prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  ^C^C during installation may leave pre-commit in a bad state
  There's code which handles the first ^C, however I think the second one (during execution of the finally block) may not be handled well.  I probably need to make the cleanup atomic somehow...
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `pre_commit/repository.py`
  Content:
  ```
  1 from __future__ import unicode_literals
  2 
  3 from cached_property import cached_property
  4 
  5 from pre_commit.languages.all import languages
  6 from pre_commit.manifest import Manifest
  7 from pre_commit.prefixed_command_runner import PrefixedCommandRunner
  8 
  9 
  10 class Repository(object):
  11     def __init__(self, repo_config, repo_path_getter):
  12         self.repo_config = repo_config
  13         self.repo_path_getter = repo_path_getter
  14         self.__installed = False
  15 
  16     @classmethod
  17     def create(cls, config, store):
  18         repo_path_getter = store.get_repo_path_getter(
  19             config['repo'], config['sha']
  20         )
  21         return cls(config, repo_path_getter)
  22 
  23     @cached_property
  24     def repo_url(self):
  25         return self.repo_config['repo']
  26 
  27     @cached_property
  28     def sha(self):
  29         return self.repo_config['sha']
  30 
  31     @cached_property
  32     def languages(self):
  33         return set(
  34             (hook['language'], hook['language_version'])
  35             for _, hook in self.hooks
  36         )
  37 
  38     @cached_property
  39     def hooks(self):
  40         # TODO: merging in manifest dicts is a smell imo
  41         return tuple(
  42             (hook['id'], dict(self.manifest.hooks[hook['id']], **hook))
  43             for hook in self.repo_config['hooks']
  44         )
  45 
  46     @cached_property
  47     def manifest(self):
  48         return Manifest(self.repo_path_getter)
  49 
  50     @cached_property
  51     def cmd_runner(self):
  52         return PrefixedCommandRunner(self.repo_path_getter.repo_path)
  53 
  54     def require_installed(self):
  55         if self.__installed:
  56             return
  57 
  58         self.install()
  59         self.__installed = True
  60 
  61     def install(self):
  62         """Install the hook repository."""
  63         for language_name, language_version in self.languages:
  64             language = languages[language_name]
  65             if (
  66                 language.ENVIRONMENT_DIR is None or
  67                 self.cmd_runner.exists(language.ENVIRONMENT_DIR)
  68             ):
  69                 # The language is already installed
  70                 continue
  71             language.install_environment(self.cmd_runner, language_version)
  72 
  73     def run_hook(self, hook, file_args):
  74         """Run a hook.
  75 
  76         Args:
  77             hook - Hook dictionary
  78             file_args - List of files to run
  79         """
  80         self.require_installed()
  81         return languages[hook['language']].run_hook(
  82             self.cmd_runner, hook, file_args,
  83         )
  84
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/pre_commit/repository.py b/pre_commit/repository.py
  --- a/pre_commit/repository.py
  +++ b/pre_commit/repository.py
  @@ -1,5 +1,7 @@
   from __future__ import unicode_literals
   
  +import shutil
  +
   from cached_property import cached_property
   
   from pre_commit.languages.all import languages
  @@ -64,11 +66,21 @@
               language = languages[language_name]
               if (
                   language.ENVIRONMENT_DIR is None or
  -                self.cmd_runner.exists(language.ENVIRONMENT_DIR)
  +                self.cmd_runner.exists(language.ENVIRONMENT_DIR, '.installed')
               ):
                   # The language is already installed
                   continue
  +            # There's potentially incomplete cleanup from previous runs
  +            # Clean it up!
  +            if self.cmd_runner.exists(language.ENVIRONMENT_DIR):
  +                shutil.rmtree(self.cmd_runner.path(language.ENVIRONMENT_DIR))
  +
               language.install_environment(self.cmd_runner, language_version)
  +            # Touch the .installed file (atomic) to indicate we've installed
  +            open(
  +                self.cmd_runner.path(language.ENVIRONMENT_DIR, '.installed'),
  +                'w',
  +            ).close()
   
       def run_hook(self, hook, file_args):
           """Run a hook.
  
verification_info: {"golden_diff": "diff --git a/pre_commit/repository.py b/pre_commit/repository.py\n--- a/pre_commit/repository.py\n+++ b/pre_commit/repository.py\n@@ -1,5 +1,7 @@\n from __future__ import unicode_literals\n \n+import shutil\n+\n from cached_property import cached_property\n \n from pre_commit.languages.all import languages\n@@ -64,11 +66,21 @@\n             language = languages[language_name]\n             if (\n                 language.ENVIRONMENT_DIR is None or\n-                self.cmd_runner.exists(language.ENVIRONMENT_DIR)\n+                self.cmd_runner.exists(language.ENVIRONMENT_DIR, '.installed')\n             ):\n                 # The language is already installed\n                 continue\n+            # There's potentially incomplete cleanup from previous runs\n+            # Clean it up!\n+            if self.cmd_runner.exists(language.ENVIRONMENT_DIR):\n+                shutil.rmtree(self.cmd_runner.path(language.ENVIRONMENT_DIR))\n+\n             language.install_environment(self.cmd_runner, language_version)\n+            # Touch the .installed file (atomic) to indicate we've installed\n+            open(\n+                self.cmd_runner.path(language.ENVIRONMENT_DIR, '.installed'),\n+                'w',\n+            ).close()\n \n     def run_hook(self, hook, file_args):\n         \"\"\"Run a hook.\n", "issue": "^C^C during installation may leave pre-commit in a bad state\nThere's code which handles the first ^C, however I think the second one (during execution of the finally block) may not be handled well.  I probably need to make the cleanup atomic somehow...\n\n", "before_files": [{"content": "from __future__ import unicode_literals\n\nfrom cached_property import cached_property\n\nfrom pre_commit.languages.all import languages\nfrom pre_commit.manifest import Manifest\nfrom pre_commit.prefixed_command_runner import PrefixedCommandRunner\n\n\nclass Repository(object):\n    def __init__(self, repo_config, repo_path_getter):\n        self.repo_config = repo_config\n        self.repo_path_getter = repo_path_getter\n        self.__installed = False\n\n    @classmethod\n    def create(cls, config, store):\n        repo_path_getter = store.get_repo_path_getter(\n            config['repo'], config['sha']\n        )\n        return cls(config, repo_path_getter)\n\n    @cached_property\n    def repo_url(self):\n        return self.repo_config['repo']\n\n    @cached_property\n    def sha(self):\n        return self.repo_config['sha']\n\n    @cached_property\n    def languages(self):\n        return set(\n            (hook['language'], hook['language_version'])\n            for _, hook in self.hooks\n        )\n\n    @cached_property\n    def hooks(self):\n        # TODO: merging in manifest dicts is a smell imo\n        return tuple(\n            (hook['id'], dict(self.manifest.hooks[hook['id']], **hook))\n            for hook in self.repo_config['hooks']\n        )\n\n    @cached_property\n    def manifest(self):\n        return Manifest(self.repo_path_getter)\n\n    @cached_property\n    def cmd_runner(self):\n        return PrefixedCommandRunner(self.repo_path_getter.repo_path)\n\n    def require_installed(self):\n        if self.__installed:\n            return\n\n        self.install()\n        self.__installed = True\n\n    def install(self):\n        \"\"\"Install the hook repository.\"\"\"\n        for language_name, language_version in self.languages:\n            language = languages[language_name]\n            if (\n                language.ENVIRONMENT_DIR is None or\n                self.cmd_runner.exists(language.ENVIRONMENT_DIR)\n            ):\n                # The language is already installed\n                continue\n            language.install_environment(self.cmd_runner, language_version)\n\n    def run_hook(self, hook, file_args):\n        \"\"\"Run a hook.\n\n        Args:\n            hook - Hook dictionary\n            file_args - List of files to run\n        \"\"\"\n        self.require_installed()\n        return languages[hook['language']].run_hook(\n            self.cmd_runner, hook, file_args,\n        )\n", "path": "pre_commit/repository.py"}], "after_files": [{"content": "from __future__ import unicode_literals\n\nimport shutil\n\nfrom cached_property import cached_property\n\nfrom pre_commit.languages.all import languages\nfrom pre_commit.manifest import Manifest\nfrom pre_commit.prefixed_command_runner import PrefixedCommandRunner\n\n\nclass Repository(object):\n    def __init__(self, repo_config, repo_path_getter):\n        self.repo_config = repo_config\n        self.repo_path_getter = repo_path_getter\n        self.__installed = False\n\n    @classmethod\n    def create(cls, config, store):\n        repo_path_getter = store.get_repo_path_getter(\n            config['repo'], config['sha']\n        )\n        return cls(config, repo_path_getter)\n\n    @cached_property\n    def repo_url(self):\n        return self.repo_config['repo']\n\n    @cached_property\n    def sha(self):\n        return self.repo_config['sha']\n\n    @cached_property\n    def languages(self):\n        return set(\n            (hook['language'], hook['language_version'])\n            for _, hook in self.hooks\n        )\n\n    @cached_property\n    def hooks(self):\n        # TODO: merging in manifest dicts is a smell imo\n        return tuple(\n            (hook['id'], dict(self.manifest.hooks[hook['id']], **hook))\n            for hook in self.repo_config['hooks']\n        )\n\n    @cached_property\n    def manifest(self):\n        return Manifest(self.repo_path_getter)\n\n    @cached_property\n    def cmd_runner(self):\n        return PrefixedCommandRunner(self.repo_path_getter.repo_path)\n\n    def require_installed(self):\n        if self.__installed:\n            return\n\n        self.install()\n        self.__installed = True\n\n    def install(self):\n        \"\"\"Install the hook repository.\"\"\"\n        for language_name, language_version in self.languages:\n            language = languages[language_name]\n            if (\n                language.ENVIRONMENT_DIR is None or\n                self.cmd_runner.exists(language.ENVIRONMENT_DIR, '.installed')\n            ):\n                # The language is already installed\n                continue\n            # There's potentially incomplete cleanup from previous runs\n            # Clean it up!\n            if self.cmd_runner.exists(language.ENVIRONMENT_DIR):\n                shutil.rmtree(self.cmd_runner.path(language.ENVIRONMENT_DIR))\n\n            language.install_environment(self.cmd_runner, language_version)\n            # Touch the .installed file (atomic) to indicate we've installed\n            open(\n                self.cmd_runner.path(language.ENVIRONMENT_DIR, '.installed'),\n                'w',\n            ).close()\n\n    def run_hook(self, hook, file_args):\n        \"\"\"Run a hook.\n\n        Args:\n            hook - Hook dictionary\n            file_args - List of files to run\n        \"\"\"\n        self.require_installed()\n        return languages[hook['language']].run_hook(\n            self.cmd_runner, hook, file_args,\n        )\n", "path": "pre_commit/repository.py"}]}