prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Compiling with USE_LAPACK in v2.0 is broken 
  Reported by @fabienalet 
  
  </issue>
  <code>
  [start of setup.py]
  1 import os
  2 import platform
  3 import re
  4 import shlex
  5 import subprocess
  6 import sys
  7 
  8 from distutils import log
  9 from setuptools import setup, Extension
  10 from setuptools.command.build_ext import build_ext
  11 
  12 
  13 # Poor man's command-line options parsing
  14 def steal_cmake_flags(args):
  15     """
  16     Extracts CMake-related arguments from ``args``. ``args`` is a list of
  17     strings usually equal to ``sys.argv``. All arguments of the form
  18     ``--cmake-args=...`` are extracted (i.e. removed from ``args``!) and
  19     accumulated. If there are no arguments of the specified form,
  20     ``NETKET_CMAKE_FLAGS`` environment variable is used instead.
  21     """
  22     _ARG_PREFIX = "--cmake-args="
  23 
  24     def _unquote(x):
  25         m = re.match(r"'(.*)'", x)
  26         if m:
  27             return m.group(1)
  28         m = re.match(r'"(.*)"', x)
  29         if m:
  30             return m.group(1)
  31         return x
  32 
  33     stolen_args = [x for x in args if x.startswith(_ARG_PREFIX)]
  34     for x in stolen_args:
  35         args.remove(x)
  36 
  37     if len(stolen_args) > 0:
  38         cmake_args = sum(
  39             (shlex.split(_unquote(x[len(_ARG_PREFIX) :])) for x in stolen_args), []
  40         )
  41     else:
  42         try:
  43             cmake_args = shlex.split(os.environ["NETKET_CMAKE_FLAGS"])
  44         except KeyError:
  45             cmake_args = []
  46     return cmake_args
  47 
  48 
  49 """
  50 A list of arguments to be passed to the configuration step of CMake.
  51 """
  52 _CMAKE_FLAGS = steal_cmake_flags(sys.argv)
  53 
  54 
  55 class CMakeExtension(Extension):
  56     def __init__(self, name, sourcedir=""):
  57         Extension.__init__(self, name, sources=[])
  58         self.sourcedir = os.path.abspath(sourcedir)
  59 
  60 
  61 class CMakeBuild(build_ext):
  62     """
  63     We extend setuptools to support building extensions with CMake. An extension
  64     is built with CMake if it inherits from ``CMakeExtension``.
  65     """
  66 
  67     def build_extension(self, ext):
  68         if isinstance(ext, CMakeExtension):  # Building with CMake
  69             cwd = os.getcwd()
  70             # Create a directory for building out-of-source
  71             if not os.path.exists(self.build_temp):
  72                 os.makedirs(self.build_temp)
  73             # lib_dir is the directory, where the shared libraries will be
  74             # stored (it will probably be different from the build_temp
  75             # directory so that setuptools find the libraries)
  76             lib_dir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
  77             if not os.path.exists(lib_dir):
  78                 os.makedirs(lib_dir)
  79             # Options to pass to CMake during configuration
  80             cmake_args = _CMAKE_FLAGS
  81             cmake_args.append(
  82                 "-DNETKET_PYTHON_VERSION={}.{}.{}".format(*sys.version_info[:3])
  83             )
  84             cmake_args.append("-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={}".format(lib_dir))
  85 
  86             def _decode(x):
  87                 if sys.version_info >= (3, 0):
  88                     return x.decode()
  89                 else:
  90                     return x
  91 
  92             # Building
  93             os.chdir(self.build_temp)
  94             try:
  95                 # Configuration step
  96                 output = subprocess.check_output(
  97                     ["cmake", ext.sourcedir] + cmake_args, stderr=subprocess.STDOUT
  98                 )
  99                 if self.distribution.verbose:
  100                     log.info(_decode(output))
  101                 if not self.distribution.dry_run:
  102                     # Build step
  103                     output = subprocess.check_output(
  104                         ["cmake", "--build", "."], stderr=subprocess.STDOUT
  105                     )
  106                     if self.distribution.verbose:
  107                         log.info(_decode(output))
  108             except subprocess.CalledProcessError as e:
  109                 if hasattr(ext, "optional"):
  110                     if not ext.optional:
  111                         self.warn(_decode(e.output))
  112                         raise
  113                     self.warn(
  114                         'building extension "{}" failed:\n{}'.format(
  115                             ext.name, _decode(e.output)
  116                         )
  117                     )
  118                 else:
  119                     self.warn(_decode(e.output))
  120                     raise
  121             os.chdir(cwd)
  122         else:  # Fall back to the default method
  123             if sys.version_info >= (3, 0):
  124                 super().build_extension(ext)
  125             else:
  126                 super(build_ext, self).build_extension(ext)
  127 
  128 
  129 setup(
  130     name="netket",
  131     version="2.0b3",
  132     author="Giuseppe Carleo et al.",
  133     url="http://github.com/netket/netket",
  134     author_email="netket@netket.org",
  135     license="Apache 2.0",
  136     packages=["netket"],
  137     ext_modules=[CMakeExtension("netket._C_netket")],
  138     long_description="""NetKet is an open - source project delivering cutting - edge
  139          methods for the study of many - body quantum systems with artificial
  140          neural networks and machine learning techniques.""",
  141     cmdclass=dict(build_ext=CMakeBuild),
  142     zip_safe=False,
  143 )
  144
  [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
  @@ -58,6 +58,29 @@
           self.sourcedir = os.path.abspath(sourcedir)
   
   
  +def _have_ninja():
  +    """
  +    Returns `True` if the [ninja](https://ninja-build.org/) build system is
  +    available on the system.
  +    """
  +    with open(os.devnull, "wb") as devnull:
  +        try:
  +            subprocess.check_call("ninja --version".split(), stdout=devnull)
  +        except OSError:
  +            return False
  +        else:
  +            return True
  +
  +
  +def _generator_specified(args):
  +    """
  +    Returns `True` if `-G` flag was given to CMake.
  +    """
  +    for _ in filter(lambda f: f.startswith("-G"), args):
  +        return True
  +    return False
  +
  +
   class CMakeBuild(build_ext):
       """
       We extend setuptools to support building extensions with CMake. An extension
  @@ -82,6 +105,8 @@
                   "-DNETKET_PYTHON_VERSION={}.{}.{}".format(*sys.version_info[:3])
               )
               cmake_args.append("-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={}".format(lib_dir))
  +            if not _generator_specified(cmake_args) and _have_ninja():
  +                cmake_args.append("-GNinja")
   
               def _decode(x):
                   if sys.version_info >= (3, 0):
  
verification_info: {"golden_diff": "diff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -58,6 +58,29 @@\n         self.sourcedir = os.path.abspath(sourcedir)\n \n \n+def _have_ninja():\n+    \"\"\"\n+    Returns `True` if the [ninja](https://ninja-build.org/) build system is\n+    available on the system.\n+    \"\"\"\n+    with open(os.devnull, \"wb\") as devnull:\n+        try:\n+            subprocess.check_call(\"ninja --version\".split(), stdout=devnull)\n+        except OSError:\n+            return False\n+        else:\n+            return True\n+\n+\n+def _generator_specified(args):\n+    \"\"\"\n+    Returns `True` if `-G` flag was given to CMake.\n+    \"\"\"\n+    for _ in filter(lambda f: f.startswith(\"-G\"), args):\n+        return True\n+    return False\n+\n+\n class CMakeBuild(build_ext):\n     \"\"\"\n     We extend setuptools to support building extensions with CMake. An extension\n@@ -82,6 +105,8 @@\n                 \"-DNETKET_PYTHON_VERSION={}.{}.{}\".format(*sys.version_info[:3])\n             )\n             cmake_args.append(\"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={}\".format(lib_dir))\n+            if not _generator_specified(cmake_args) and _have_ninja():\n+                cmake_args.append(\"-GNinja\")\n \n             def _decode(x):\n                 if sys.version_info >= (3, 0):\n", "issue": "Compiling with USE_LAPACK in v2.0 is broken \nReported by @fabienalet \n", "before_files": [{"content": "import os\nimport platform\nimport re\nimport shlex\nimport subprocess\nimport sys\n\nfrom distutils import log\nfrom setuptools import setup, Extension\nfrom setuptools.command.build_ext import build_ext\n\n\n# Poor man's command-line options parsing\ndef steal_cmake_flags(args):\n    \"\"\"\n    Extracts CMake-related arguments from ``args``. ``args`` is a list of\n    strings usually equal to ``sys.argv``. All arguments of the form\n    ``--cmake-args=...`` are extracted (i.e. removed from ``args``!) and\n    accumulated. If there are no arguments of the specified form,\n    ``NETKET_CMAKE_FLAGS`` environment variable is used instead.\n    \"\"\"\n    _ARG_PREFIX = \"--cmake-args=\"\n\n    def _unquote(x):\n        m = re.match(r\"'(.*)'\", x)\n        if m:\n            return m.group(1)\n        m = re.match(r'\"(.*)\"', x)\n        if m:\n            return m.group(1)\n        return x\n\n    stolen_args = [x for x in args if x.startswith(_ARG_PREFIX)]\n    for x in stolen_args:\n        args.remove(x)\n\n    if len(stolen_args) > 0:\n        cmake_args = sum(\n            (shlex.split(_unquote(x[len(_ARG_PREFIX) :])) for x in stolen_args), []\n        )\n    else:\n        try:\n            cmake_args = shlex.split(os.environ[\"NETKET_CMAKE_FLAGS\"])\n        except KeyError:\n            cmake_args = []\n    return cmake_args\n\n\n\"\"\"\nA list of arguments to be passed to the configuration step of CMake.\n\"\"\"\n_CMAKE_FLAGS = steal_cmake_flags(sys.argv)\n\n\nclass CMakeExtension(Extension):\n    def __init__(self, name, sourcedir=\"\"):\n        Extension.__init__(self, name, sources=[])\n        self.sourcedir = os.path.abspath(sourcedir)\n\n\nclass CMakeBuild(build_ext):\n    \"\"\"\n    We extend setuptools to support building extensions with CMake. An extension\n    is built with CMake if it inherits from ``CMakeExtension``.\n    \"\"\"\n\n    def build_extension(self, ext):\n        if isinstance(ext, CMakeExtension):  # Building with CMake\n            cwd = os.getcwd()\n            # Create a directory for building out-of-source\n            if not os.path.exists(self.build_temp):\n                os.makedirs(self.build_temp)\n            # lib_dir is the directory, where the shared libraries will be\n            # stored (it will probably be different from the build_temp\n            # directory so that setuptools find the libraries)\n            lib_dir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))\n            if not os.path.exists(lib_dir):\n                os.makedirs(lib_dir)\n            # Options to pass to CMake during configuration\n            cmake_args = _CMAKE_FLAGS\n            cmake_args.append(\n                \"-DNETKET_PYTHON_VERSION={}.{}.{}\".format(*sys.version_info[:3])\n            )\n            cmake_args.append(\"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={}\".format(lib_dir))\n\n            def _decode(x):\n                if sys.version_info >= (3, 0):\n                    return x.decode()\n                else:\n                    return x\n\n            # Building\n            os.chdir(self.build_temp)\n            try:\n                # Configuration step\n                output = subprocess.check_output(\n                    [\"cmake\", ext.sourcedir] + cmake_args, stderr=subprocess.STDOUT\n                )\n                if self.distribution.verbose:\n                    log.info(_decode(output))\n                if not self.distribution.dry_run:\n                    # Build step\n                    output = subprocess.check_output(\n                        [\"cmake\", \"--build\", \".\"], stderr=subprocess.STDOUT\n                    )\n                    if self.distribution.verbose:\n                        log.info(_decode(output))\n            except subprocess.CalledProcessError as e:\n                if hasattr(ext, \"optional\"):\n                    if not ext.optional:\n                        self.warn(_decode(e.output))\n                        raise\n                    self.warn(\n                        'building extension \"{}\" failed:\\n{}'.format(\n                            ext.name, _decode(e.output)\n                        )\n                    )\n                else:\n                    self.warn(_decode(e.output))\n                    raise\n            os.chdir(cwd)\n        else:  # Fall back to the default method\n            if sys.version_info >= (3, 0):\n                super().build_extension(ext)\n            else:\n                super(build_ext, self).build_extension(ext)\n\n\nsetup(\n    name=\"netket\",\n    version=\"2.0b3\",\n    author=\"Giuseppe Carleo et al.\",\n    url=\"http://github.com/netket/netket\",\n    author_email=\"netket@netket.org\",\n    license=\"Apache 2.0\",\n    packages=[\"netket\"],\n    ext_modules=[CMakeExtension(\"netket._C_netket\")],\n    long_description=\"\"\"NetKet is an open - source project delivering cutting - edge\n         methods for the study of many - body quantum systems with artificial\n         neural networks and machine learning techniques.\"\"\",\n    cmdclass=dict(build_ext=CMakeBuild),\n    zip_safe=False,\n)\n", "path": "setup.py"}]}