prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  BUG: Build failure due to problems with shebang line in cythoner.py
  I ran into a problem running `dev.py` that appears to be caused by the shebang line `#!python3`  in the file `scipy/_build_utils/cythoner.py`. If I change it to `#!/usr/bin/env python` then the build works fine.
  
  Most files in scipy with a shebang line use `#!/usr/bin/env python`. Only files in the `_build_utils` use `#!python3`.
  
  Error message when running `python dev.py build`:
  
  ```shell
  Meson build setup OK
  💻  ninja -C /mnt/c/Users/Jozsef/OSS/scipy-test/build
  ninja: Entering directory `/mnt/c/Users/Jozsef/OSS/scipy-test/build'
  [3/1562] Generating 'scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c'.
  FAILED: scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c
  /mnt/c/Users/Jozsef/OSS/scipy-test/scipy/_build_utils/cythoner.py ../scipy/_lib/_ccallback_c.pyx scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c
  /bin/sh: 1: /mnt/c/Users/Jozsef/OSS/scipy-test/scipy/_build_utils/cythoner.py: not found
  [12/1562] Compiling C++ object scipy/_lib/_uarray/_uarray.cpython-310-x86_64-linux-gnu.so.p/_uarray_dispatch.cxx.o
  ninja: build stopped: subcommand failed.
  Build failed!
  ```
  
  If I try running `cythoner.py` directly:
  
  ```shell
  -bash: /mnt/c/Users/Jozsef/OSS/scipy-conda/scipy/_build_utils/cythoner.py: python3: bad interpreter: No such file or directory
  ```
  
  I'm using conda with WSL (Ubuntu).
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `scipy/_build_utils/cythoner.py`
  Content:
  ```
  1 #!python3
  2 """ Scipy variant of Cython command
  3 
  4 Cython, as applied to single pyx file.
  5 
  6 Expects two arguments, infile and outfile.
  7 
  8 Other options passed through to cython command line parser.
  9 """
  10 
  11 import os
  12 import os.path as op
  13 import sys
  14 import subprocess as sbp
  15 
  16 
  17 def main():
  18     in_fname, out_fname = (op.abspath(p) for p in sys.argv[1:3])
  19 
  20     sbp.run(['cython', '-3', '--fast-fail',
  21              '--output-file', out_fname,
  22              '--include-dir', os.getcwd()] +
  23             sys.argv[3:] + [in_fname],
  24             check=True)
  25 
  26 
  27 if __name__ == '__main__':
  28     main()
  29
  ```
  --- 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/scipy/_build_utils/cythoner.py b/scipy/_build_utils/cythoner.py
  --- a/scipy/_build_utils/cythoner.py
  +++ b/scipy/_build_utils/cythoner.py
  @@ -1,4 +1,4 @@
  -#!python3
  +#!/usr/bin/env python3
   """ Scipy variant of Cython command
   
   Cython, as applied to single pyx file.
  
verification_info: {"golden_diff": "diff --git a/scipy/_build_utils/cythoner.py b/scipy/_build_utils/cythoner.py\n--- a/scipy/_build_utils/cythoner.py\n+++ b/scipy/_build_utils/cythoner.py\n@@ -1,4 +1,4 @@\n-#!python3\n+#!/usr/bin/env python3\n \"\"\" Scipy variant of Cython command\n \n Cython, as applied to single pyx file.\n", "issue": "BUG: Build failure due to problems with shebang line in cythoner.py\nI ran into a problem running `dev.py` that appears to be caused by the shebang line `#!python3`  in the file `scipy/_build_utils/cythoner.py`. If I change it to `#!/usr/bin/env python` then the build works fine.\r\n\r\nMost files in scipy with a shebang line use `#!/usr/bin/env python`. Only files in the `_build_utils` use `#!python3`.\r\n\r\nError message when running `python dev.py build`:\r\n\r\n```shell\r\nMeson build setup OK\r\n\ud83d\udcbb  ninja -C /mnt/c/Users/Jozsef/OSS/scipy-test/build\r\nninja: Entering directory `/mnt/c/Users/Jozsef/OSS/scipy-test/build'\r\n[3/1562] Generating 'scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c'.\r\nFAILED: scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c\r\n/mnt/c/Users/Jozsef/OSS/scipy-test/scipy/_build_utils/cythoner.py ../scipy/_lib/_ccallback_c.pyx scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c\r\n/bin/sh: 1: /mnt/c/Users/Jozsef/OSS/scipy-test/scipy/_build_utils/cythoner.py: not found\r\n[12/1562] Compiling C++ object scipy/_lib/_uarray/_uarray.cpython-310-x86_64-linux-gnu.so.p/_uarray_dispatch.cxx.o\r\nninja: build stopped: subcommand failed.\r\nBuild failed!\r\n```\r\n\r\nIf I try running `cythoner.py` directly:\r\n\r\n```shell\r\n-bash: /mnt/c/Users/Jozsef/OSS/scipy-conda/scipy/_build_utils/cythoner.py: python3: bad interpreter: No such file or directory\r\n```\r\n\r\nI'm using conda with WSL (Ubuntu).\n", "before_files": [{"content": "#!python3\n\"\"\" Scipy variant of Cython command\n\nCython, as applied to single pyx file.\n\nExpects two arguments, infile and outfile.\n\nOther options passed through to cython command line parser.\n\"\"\"\n\nimport os\nimport os.path as op\nimport sys\nimport subprocess as sbp\n\n\ndef main():\n    in_fname, out_fname = (op.abspath(p) for p in sys.argv[1:3])\n\n    sbp.run(['cython', '-3', '--fast-fail',\n             '--output-file', out_fname,\n             '--include-dir', os.getcwd()] +\n            sys.argv[3:] + [in_fname],\n            check=True)\n\n\nif __name__ == '__main__':\n    main()\n", "path": "scipy/_build_utils/cythoner.py"}], "after_files": [{"content": "#!/usr/bin/env python3\n\"\"\" Scipy variant of Cython command\n\nCython, as applied to single pyx file.\n\nExpects two arguments, infile and outfile.\n\nOther options passed through to cython command line parser.\n\"\"\"\n\nimport os\nimport os.path as op\nimport sys\nimport subprocess as sbp\n\n\ndef main():\n    in_fname, out_fname = (op.abspath(p) for p in sys.argv[1:3])\n\n    sbp.run(['cython', '-3', '--fast-fail',\n             '--output-file', out_fname,\n             '--include-dir', os.getcwd()] +\n            sys.argv[3:] + [in_fname],\n            check=True)\n\n\nif __name__ == '__main__':\n    main()\n", "path": "scipy/_build_utils/cythoner.py"}]}