title: pre-commit giving error with mirrors-mypy, how do I fix it?
body: <p>I am getting the below error when running &quot;pre-commit run --all-files&quot; and when trying to make a commit, it is some python error, python version in use is &quot;Python 2.7.16&quot;.</p>
  <pre><code>[INFO] Installing environment for https://github.com/pre-commit/mirrors-mypy.
  [INFO] Once installed this environment will be reused.
  [INFO] This may take a few minutes...
  An unexpected error has occurred: CalledProcessError: command: ('/Users/user/.cache/pre-commit/repoq_mv31g8/py_env-default/bin/python', '-mpip', 'install', '.', 'tokenize-rt==3.2.0', 'pydantic')
  return code: 1
  expected return code: 0
  stdout:
      Processing /Users/user/.cache/pre-commit/repoq_mv31g8
        Preparing metadata (setup.py): started
        Preparing metadata (setup.py): finished with status 'done'
      Collecting tokenize-rt==3.2.0
        Using cached tokenize_rt-3.2.0-py2.py3-none-any.whl (6.1 kB)
      Collecting pydantic
        Using cached pydantic-1.9.0-cp310-cp310-macosx_11_0_arm64.whl (2.4 MB)
      Collecting mypy==0.782
        Using cached mypy-0.782-py3-none-any.whl (2.4 MB)
      Collecting mypy-extensions&lt;0.5.0,&gt;=0.4.3
        Using cached mypy_extensions-0.4.3-py2.py3-none-any.whl (4.5 kB)
      Collecting typing-extensions&gt;=3.7.4
        Using cached typing_extensions-4.1.1-py3-none-any.whl (26 kB)
      Collecting typed-ast&lt;1.5.0,&gt;=1.4.0
        Using cached typed_ast-1.4.3.tar.gz (210 kB)
        Preparing metadata (setup.py): started
        Preparing metadata (setup.py): finished with status 'done'
      Building wheels for collected packages: pre-commit-dummy-package, typed-ast
        Building wheel for pre-commit-dummy-package (setup.py): started
        Building wheel for pre-commit-dummy-package (setup.py): finished with status 'done'
        Created wheel for pre-commit-dummy-package: filename=pre_commit_dummy_package-0.0.0-py3-none-any.whl size=1154 sha256=ea7d756fd19dee0f5f03851e3e343db4194f4b306f21fecb796b4d6d89d266fb
        Stored in directory: /private/var/folders/v4/nlc505k12rn9pf4c9kntz8qm0000gn/T/pip-ephem-wheel-cache-4jcph5rz/wheels/80/78/0d/746d1697141e342b257e21c980fc51ac134e6b6400568c3646
        Building wheel for typed-ast (setup.py): started
        Building wheel for typed-ast (setup.py): finished with status 'error'
        Running setup.py clean for typed-ast
      Successfully built pre-commit-dummy-package
      Failed to build typed-ast
      Installing collected packages: typed-ast, mypy-extensions, typing-extensions, tokenize-rt, pydantic, mypy, pre-commit-dummy-package
        Running setup.py install for typed-ast: started
        Running setup.py install for typed-ast: finished with status 'error'
      
  stderr:
        error: subprocess-exited-with-error
        
        × python setup.py bdist_wheel did not run successfully.
        │ exit code: 1
        ╰─&gt; [22 lines of output]
            running bdist_wheel
            running build
            running build_py
            package init file 'ast3/tests/__init__.py' not found (or not a regular file)
            running build_ext
            building '_ast27' extension
            building '_ast3' extension
            ast3/Python/ast.c:844:5: warning: code will never be executed [-Wunreachable-code]
                abort();
                ^~~~~
            ast3/Python/ast.c:4514:9: error: implicit declaration of function '_PyUnicode_DecodeUnicodeEscape' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                v = _PyUnicode_DecodeUnicodeEscape(s, len, NULL, &amp;first_invalid_escape);
                    ^
            ast3/Python/ast.c:4514:9: note: did you mean 'PyUnicode_DecodeUnicodeEscape'?
            /opt/homebrew/opt/python@3.10/Frameworks/Python.framework/Versions/3.10/include/python3.10/unicodeobject.h:608:23: note: 'PyUnicode_DecodeUnicodeEscape' declared here
            PyAPI_FUNC(PyObject*) PyUnicode_DecodeUnicodeEscape(
                                  ^
            ast3/Python/ast.c:4514:7: warning: incompatible integer to pointer conversion assigning to 'PyObject *' (aka 'struct _object *') from 'int' [-Wint-conversion]
                v = _PyUnicode_DecodeUnicodeEscape(s, len, NULL, &amp;first_invalid_escape);
                  ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            2 warnings and 1 error generated.
            error: command '/usr/bin/clang' failed with exit code 1
            [end of output]
        
        note: This error originates from a subprocess, and is likely not a problem with pip.
        ERROR: Failed building wheel for typed-ast
        error: subprocess-exited-with-error
        
        × Running setup.py install for typed-ast did not run successfully.
        │ exit code: 1
        ╰─&gt; [24 lines of output]
            running install
            /Users/user/.cache/pre-commit/repoq_mv31g8/py_env-default/lib/python3.10/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
              warnings.warn(
            running build
            running build_py
            package init file 'ast3/tests/__init__.py' not found (or not a regular file)
            running build_ext
            building '_ast27' extension
            building '_ast3' extension
            ast3/Python/ast.c:844:5: warning: code will never be executed [-Wunreachable-code]
                abort();
                ^~~~~
            ast3/Python/ast.c:4514:9: error: implicit declaration of function '_PyUnicode_DecodeUnicodeEscape' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                v = _PyUnicode_DecodeUnicodeEscape(s, len, NULL, &amp;first_invalid_escape);
                    ^
            ast3/Python/ast.c:4514:9: note: did you mean 'PyUnicode_DecodeUnicodeEscape'?
            /opt/homebrew/opt/python@3.10/Frameworks/Python.framework/Versions/3.10/include/python3.10/unicodeobject.h:608:23: note: 'PyUnicode_DecodeUnicodeEscape' declared here
            PyAPI_FUNC(PyObject*) PyUnicode_DecodeUnicodeEscape(
                                  ^
            ast3/Python/ast.c:4514:7: warning: incompatible integer to pointer conversion assigning to 'PyObject *' (aka 'struct _object *') from 'int' [-Wint-conversion]
                v = _PyUnicode_DecodeUnicodeEscape(s, len, NULL, &amp;first_invalid_escape);
                  ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            2 warnings and 1 error generated.
            error: command '/usr/bin/clang' failed with exit code 1
            [end of output]
        
        note: This error originates from a subprocess, and is likely not a problem with pip.
      error: legacy-install-failure
      
      × Encountered error while trying to install package.
      ╰─&gt; typed-ast
      
      note: This is an issue with the package mentioned above, not pip.
      hint: See above for output from the failure.
      
  Check the log at /Users/user/.cache/pre-commit/pre-commit.log
  </code></pre>
  <p>I am running it on Apple M1 Air (macOS Big Sur), what am I missing or is it a known M1 issue ?
  I have tried installing pydantic manually, pre-commit is installed by brew.
  Thanks in Advance</p>
  <p>pre-commit config:</p>
  <pre><code>repos:
  -   repo: https://github.com/pre-commit/pre-commit-hooks
      rev: v4.0.1
      hooks:
      -   id: trailing-whitespace
      -   id: end-of-file-fixer
      -   id: check-yaml
      -   id: check-added-large-files
  
  -   repo: https://github.com/psf/black
      rev: 21.7b0
      hooks:
      -   id: black
  
  -   repo: https://github.com/pre-commit/mirrors-mypy
      rev: v0.782
      hooks:
      -   id: mypy
          additional_dependencies: [pydantic]
  </code></pre>