prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Make TorchText installable from direct reference
  In order to make `pip install https://github.com/pytorch/text` succeed
  `setup.py` should have logic to initialize submodules
  
  Add `check_submodules()` routine to setup.py to check if
  'third_party/re2/CMakeLists.txt' is present on the filesystem and
  attempt to initialize submodules if it is not
  
  </issue>
  <code>
  [start of setup.py]
  1 #!/usr/bin/env python
  2 import distutils.command.clean
  3 import io
  4 import os
  5 import shutil
  6 import subprocess
  7 from pathlib import Path
  8 
  9 from build_tools import setup_helpers
  10 from setuptools import find_packages, setup
  11 
  12 ROOT_DIR = Path(__file__).parent.resolve()
  13 
  14 
  15 def read(*names, **kwargs):
  16     with io.open(ROOT_DIR.joinpath(*names), encoding=kwargs.get("encoding", "utf8")) as fp:
  17         return fp.read()
  18 
  19 
  20 def _get_version():
  21     try:
  22         cmd = ["git", "rev-parse", "HEAD"]
  23         sha = subprocess.check_output(cmd, cwd=str(ROOT_DIR)).decode("ascii").strip()
  24     except Exception:
  25         sha = None
  26 
  27     if "BUILD_VERSION" in os.environ:
  28         version = os.environ["BUILD_VERSION"]
  29     else:
  30         with open(os.path.join(ROOT_DIR, "version.txt"), "r") as f:
  31             version = f.readline().strip()
  32         if sha is not None:
  33             version += "+" + sha[:7]
  34 
  35     if sha is None:
  36         sha = "Unknown"
  37     return version, sha
  38 
  39 
  40 def _export_version(version, sha):
  41     version_path = ROOT_DIR / "torchtext" / "version.py"
  42     with open(version_path, "w") as fileobj:
  43         fileobj.write("__version__ = '{}'\n".format(version))
  44         fileobj.write("git_version = {}\n".format(repr(sha)))
  45 
  46 
  47 VERSION, SHA = _get_version()
  48 _export_version(VERSION, SHA)
  49 
  50 print("-- Building version " + VERSION)
  51 
  52 pytorch_package_version = os.getenv("PYTORCH_VERSION")
  53 
  54 pytorch_package_dep = "torch"
  55 if pytorch_package_version is not None:
  56     pytorch_package_dep += "==" + pytorch_package_version
  57 
  58 
  59 class clean(distutils.command.clean.clean):
  60     def run(self):
  61         # Run default behavior first
  62         distutils.command.clean.clean.run(self)
  63 
  64         # Remove torchtext extension
  65         for path in (ROOT_DIR / "torchtext").glob("**/*.so"):
  66             print(f"removing '{path}'")
  67             path.unlink()
  68         # Remove build directory
  69         build_dirs = [
  70             ROOT_DIR / "build",
  71             ROOT_DIR / "third_party" / "build",
  72         ]
  73         for path in build_dirs:
  74             if path.exists():
  75                 print(f"removing '{path}' (and everything under it)")
  76                 shutil.rmtree(str(path), ignore_errors=True)
  77 
  78 
  79 setup_info = dict(
  80     # Metadata
  81     name="torchtext",
  82     version=VERSION,
  83     author="PyTorch core devs and James Bradbury",
  84     author_email="jekbradbury@gmail.com",
  85     url="https://github.com/pytorch/text",
  86     description="Text utilities and datasets for PyTorch",
  87     long_description=read("README.rst"),
  88     license="BSD",
  89     install_requires=["tqdm", "requests", pytorch_package_dep, "numpy"],
  90     python_requires=">=3.7",
  91     classifiers=[
  92         "Programming Language :: Python :: 3.7",
  93         "Programming Language :: Python :: 3.8",
  94         "Programming Language :: Python :: 3.9",
  95     ],
  96     # Package info
  97     packages=find_packages(exclude=("test*", "build_tools*")),
  98     zip_safe=False,
  99     # Extension info
  100     # If you are trying to use torchtext.so and see no registered op.
  101     # See here: https://github.com/pytorch/vision/issues/2134"
  102     ext_modules=setup_helpers.get_ext_modules(),
  103     cmdclass={
  104         "build_ext": setup_helpers.CMakeBuild,
  105         "clean": clean,
  106     },
  107 )
  108 
  109 setup(**setup_info)
  110
  [end of setup.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -4,6 +4,7 @@
   import os
   import shutil
   import subprocess
  +import sys
   from pathlib import Path
   
   from build_tools import setup_helpers
  @@ -44,6 +45,18 @@
           fileobj.write("git_version = {}\n".format(repr(sha)))
   
   
  +def _init_submodule():
  +    print(" --- Initializing submodules")
  +    try:
  +        subprocess.check_call(["git", "submodule", "init"])
  +        subprocess.check_call(["git", "submodule", "update"])
  +    except Exception:
  +        print(" --- Submodule initalization failed")
  +        print("Please run:\n\tgit submodule update --init --recursive")
  +        sys.exit(1)
  +    print(" --- Initialized submodule")
  +
  +
   VERSION, SHA = _get_version()
   _export_version(VERSION, SHA)
   
  @@ -76,6 +89,7 @@
                   shutil.rmtree(str(path), ignore_errors=True)
   
   
  +_init_submodule()
   setup_info = dict(
       # Metadata
       name="torchtext",
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -4,6 +4,7 @@\n import os\n import shutil\n import subprocess\n+import sys\n from pathlib import Path\n \n from build_tools import setup_helpers\n@@ -44,6 +45,18 @@\n         fileobj.write(\"git_version = {}\\n\".format(repr(sha)))\n \n \n+def _init_submodule():\n+    print(\" --- Initializing submodules\")\n+    try:\n+        subprocess.check_call([\"git\", \"submodule\", \"init\"])\n+        subprocess.check_call([\"git\", \"submodule\", \"update\"])\n+    except Exception:\n+        print(\" --- Submodule initalization failed\")\n+        print(\"Please run:\\n\\tgit submodule update --init --recursive\")\n+        sys.exit(1)\n+    print(\" --- Initialized submodule\")\n+\n+\n VERSION, SHA = _get_version()\n _export_version(VERSION, SHA)\n \n@@ -76,6 +89,7 @@\n                 shutil.rmtree(str(path), ignore_errors=True)\n \n \n+_init_submodule()\n setup_info = dict(\n     # Metadata\n     name=\"torchtext\",\n", "issue": "Make TorchText installable from direct reference\nIn order to make `pip install https://github.com/pytorch/text` succeed\r\n`setup.py` should have logic to initialize submodules\r\n\r\nAdd `check_submodules()` routine to setup.py to check if\r\n'third_party/re2/CMakeLists.txt' is present on the filesystem and\r\nattempt to initialize submodules if it is not\n", "before_files": [{"content": "#!/usr/bin/env python\nimport distutils.command.clean\nimport io\nimport os\nimport shutil\nimport subprocess\nfrom pathlib import Path\n\nfrom build_tools import setup_helpers\nfrom setuptools import find_packages, setup\n\nROOT_DIR = Path(__file__).parent.resolve()\n\n\ndef read(*names, **kwargs):\n    with io.open(ROOT_DIR.joinpath(*names), encoding=kwargs.get(\"encoding\", \"utf8\")) as fp:\n        return fp.read()\n\n\ndef _get_version():\n    try:\n        cmd = [\"git\", \"rev-parse\", \"HEAD\"]\n        sha = subprocess.check_output(cmd, cwd=str(ROOT_DIR)).decode(\"ascii\").strip()\n    except Exception:\n        sha = None\n\n    if \"BUILD_VERSION\" in os.environ:\n        version = os.environ[\"BUILD_VERSION\"]\n    else:\n        with open(os.path.join(ROOT_DIR, \"version.txt\"), \"r\") as f:\n            version = f.readline().strip()\n        if sha is not None:\n            version += \"+\" + sha[:7]\n\n    if sha is None:\n        sha = \"Unknown\"\n    return version, sha\n\n\ndef _export_version(version, sha):\n    version_path = ROOT_DIR / \"torchtext\" / \"version.py\"\n    with open(version_path, \"w\") as fileobj:\n        fileobj.write(\"__version__ = '{}'\\n\".format(version))\n        fileobj.write(\"git_version = {}\\n\".format(repr(sha)))\n\n\nVERSION, SHA = _get_version()\n_export_version(VERSION, SHA)\n\nprint(\"-- Building version \" + VERSION)\n\npytorch_package_version = os.getenv(\"PYTORCH_VERSION\")\n\npytorch_package_dep = \"torch\"\nif pytorch_package_version is not None:\n    pytorch_package_dep += \"==\" + pytorch_package_version\n\n\nclass clean(distutils.command.clean.clean):\n    def run(self):\n        # Run default behavior first\n        distutils.command.clean.clean.run(self)\n\n        # Remove torchtext extension\n        for path in (ROOT_DIR / \"torchtext\").glob(\"**/*.so\"):\n            print(f\"removing '{path}'\")\n            path.unlink()\n        # Remove build directory\n        build_dirs = [\n            ROOT_DIR / \"build\",\n            ROOT_DIR / \"third_party\" / \"build\",\n        ]\n        for path in build_dirs:\n            if path.exists():\n                print(f\"removing '{path}' (and everything under it)\")\n                shutil.rmtree(str(path), ignore_errors=True)\n\n\nsetup_info = dict(\n    # Metadata\n    name=\"torchtext\",\n    version=VERSION,\n    author=\"PyTorch core devs and James Bradbury\",\n    author_email=\"jekbradbury@gmail.com\",\n    url=\"https://github.com/pytorch/text\",\n    description=\"Text utilities and datasets for PyTorch\",\n    long_description=read(\"README.rst\"),\n    license=\"BSD\",\n    install_requires=[\"tqdm\", \"requests\", pytorch_package_dep, \"numpy\"],\n    python_requires=\">=3.7\",\n    classifiers=[\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Programming Language :: Python :: 3.9\",\n    ],\n    # Package info\n    packages=find_packages(exclude=(\"test*\", \"build_tools*\")),\n    zip_safe=False,\n    # Extension info\n    # If you are trying to use torchtext.so and see no registered op.\n    # See here: https://github.com/pytorch/vision/issues/2134\"\n    ext_modules=setup_helpers.get_ext_modules(),\n    cmdclass={\n        \"build_ext\": setup_helpers.CMakeBuild,\n        \"clean\": clean,\n    },\n)\n\nsetup(**setup_info)\n", "path": "setup.py"}]}