Hello, I encountered some issues during the installation of Detectron2.

[isakkk3]

ninja: build stopped: subcommand failed.
Traceback (most recent call last):
File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\torch\utils\cpp_extension.py", line 2100, in _run_ninja_build
subprocess.run(
File "C:\ProgramData\anaconda3\envs\image\lib\subprocess.py", line 516, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['ninja', '-v']' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<string>", line 2, in <module>
  File "<pip-setuptools-caller>", line 34, in <module>
  File "D:\isak\detectron2\setup.py", line 147, in <module>
    setup(
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\__init__.py", line 117, in setup
    return distutils.core.setup(**attrs)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\core.py", line 183, in setup
    return run_commands(dist)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\core.py", line 199, in run_commands
    dist.run_commands()
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\dist.py", line 954, in run_commands
    self.run_command(cmd)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\dist.py", line 999, in run_command
    super().run_command(command)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\dist.py", line 973, in run_command
    cmd_obj.run()
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\command\develop.py", line 35, in run
    self.install_for_development()
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\command\develop.py", line 112, in install_for_development
    self.run_command('build_ext')
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\cmd.py", line 316, in run_command
    self.distribution.run_command(command)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\dist.py", line 999, in run_command
    super().run_command(command)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\dist.py", line 973, in run_command
    cmd_obj.run()
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\command\build_ext.py", line 98, in run
    _build_ext.run(self)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 359, in run
    self.build_extensions()
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\torch\utils\cpp_extension.py", line 873, in build_extensions
    build_ext.build_extensions(self)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 476, in build_extensions
    self._build_extensions_serial()
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 502, in _build_extensions_serial
    self.build_extension(ext)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\command\build_ext.py", line 263, in build_extension
    _build_ext.build_extension(self, ext)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\Cython\Distutils\build_ext.py", line 136, in build_extension
    super().build_extension(ext)
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 557, in build_extension
    objects = self.compiler.compile(
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\torch\utils\cpp_extension.py", line 845, in win_wrap_ninja_compile
    _write_ninja_file_and_compile_objects(
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\torch\utils\cpp_extension.py", line 1774, in _write_ninja_file_and_compile_objects
    _run_ninja_build(
  File "C:\ProgramData\anaconda3\envs\image\lib\site-packages\torch\utils\cpp_extension.py", line 2116, in _run_ninja_build
    raise RuntimeError(message) from e
RuntimeError: Error compiling objects for extension
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.