Question: I am using: python: 3.12 OS: Windows 11 Home  I tried to install catboost==1.2.2 I am getting this error: C:\Windows\System32>py -3 -m pip install catboost==1.2.2 Collecting catboost==1.2.2 Downloading catboost-1.2.2.tar.gz (60.1 MB) ---------------------------------------- 60.1/60.1 MB 5.1 MB/s eta 0:00:00 Installing build dependencies ... error error: subprocess-exited-with-error × pip subprocess to install build dependencies did not run successfully. │ exit code: 1 ╰─> [135 lines of output] Collecting setuptools>=64.0 Using cached setuptools-68.2.2-py3-none-any.whl (807 kB) Collecting wheel Using cached wheel-0.41.3-py3-none-any.whl (65 kB) Collecting jupyterlab Downloading jupyterlab-4.0.8-py3-none-any.whl (9.2 MB) ---------------------------------------- 9.2/9.2 MB 7.8 MB/s eta 0:00:00 Collecting conan<=1.59,>=1.57 Downloading conan-1.59.0.tar.gz (780 kB) -------------------------------------- 781.0/781.0 kB 4.9 MB/s eta 0:00:00 Installing build dependencies: started Installing build dependencies: finished with status 'done' Getting requirements to build wheel: started Getting requirements to build wheel: finished with status 'done' Preparing metadata (pyproject.toml): started Preparing metadata (pyproject.toml): finished with status 'done' Collecting async-lru>=1.0.0 (from jupyterlab) Downloading async_lru-2.0.4-py3-none-any.whl (6.1 kB) Collecting ipykernel (from jupyterlab) Downloading ipykernel-6.26.0-py3-none-any.whl (114 kB) -------------------------------------- 114.3/114.3 kB 6.5 MB/s eta 0:00:00 Collecting jinja2>=3.0.3 (from jupyterlab) Downloading Jinja2-3.1.2-py3-none-any.whl (133 kB) -------------------------------------- 133.1/133.1 kB 7.7 MB/s eta 0:00:00 Collecting jupyter-core (from jupyterlab) Downloading jupyter_core-5.5.0-py3-none-any.whl (28 kB) Collecting jupyter-lsp>=2.0.0 (from jupyterlab) Downloading jupyter_lsp-2.2.0-py3-none-any.whl (65 kB) ---------------------------------------- 66.0/66.0 kB 3.7 MB/s eta 0:00:00 Collecting jupyter-server<3,>=2.4.0 (from jupyterlab) Downloading jupyter_server-2.10.1-py3-none-any.whl (378 kB) -------------------------------------- 378.6/378.6 kB 4.7 MB/s eta 0:00:00 Collecting jupyterlab-server<3,>=2.19.0 (from jupyterlab) Downloading jupyterlab_server-2.25.1-py3-none-any.whl (58 kB) ---------------------------------------- 59.0/59.0 kB 3.0 MB/s eta 0:00:00 Collecting notebook-shim>=0.2 (from jupyterlab) Downloading notebook_shim-0.2.3-py3-none-any.whl (13 kB) Collecting packaging (from jupyterlab) Downloading packaging-23.2-py3-none-any.whl (53 kB) ---------------------------------------- 53.0/53.0 kB 2.7 MB/s eta 0:00:00 Collecting tornado>=6.2.0 (from jupyterlab) Downloading tornado-6.3.3-cp38-abi3-win_amd64.whl (429 kB) -------------------------------------- 429.2/429.2 kB 9.1 MB/s eta 0:00:00 Collecting traitlets (from jupyterlab) Downloading traitlets-5.13.0-py3-none-any.whl (84 kB) ---------------------------------------- 85.0/85.0 kB 4.7 MB/s eta 0:00:00 Collecting requests<3.0.0,>=2.25 (from conan<=1.59,>=1.57) Downloading requests-2.31.0-py3-none-any.whl (62 kB) ---------------------------------------- 62.6/62.6 kB ? eta 0:00:00 Collecting urllib3<1.27,>=1.26.6 (from conan<=1.59,>=1.57) Downloading urllib3-1.26.18-py2.py3-none-any.whl (143 kB) -------------------------------------- 143.8/143.8 kB 4.3 MB/s eta 0:00:00 Collecting colorama<0.5.0,>=0.3.3 (from conan<=1.59,>=1.57) Downloading colorama-0.4.6-py2.py3-none-any.whl (25 kB) Collecting PyYAML<=6.0,>=3.11 (from conan<=1.59,>=1.57) Downloading PyYAML-6.0.tar.gz (124 kB) -------------------------------------- 125.0/125.0 kB 3.6 MB/s eta 0:00:00 Installing build dependencies: started Installing build dependencies: finished with status 'done' Getting requirements to build wheel: started Getting requirements to build wheel: finished with status 'error' error: subprocess-exited-with-error Getting requirements to build wheel did not run successfully. exit code: 1 [54 lines of output] running egg_info writing lib\PyYAML.egg-info\PKG-INFO writing dependency_links to lib\PyYAML.egg-info\dependency_links.txt writing top-level names to lib\PyYAML.egg-info\top_level.txt Traceback (most recent call last): File "C:\Users\talta\AppData\Local\Programs\Python\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 353, in <module> main() File "C:\Users\talta\AppData\Local\Programs\Python\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 335, in main json_out['return_val'] = hook(**hook_input['kwargs']) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\talta\AppData\Local\Programs\Python\Python312\Lib\site-packages\pip\_vendor\pyproject_hooks\_in_process\_in_process.py", line 118, in get_requires_for_build_wheel return hook(config_settings) ^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\build_meta.py", line 355, in get_requires_for_build_wheel return self._get_build_requires(config_settings, requirements=['wheel']) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\build_meta.py", line 325, in _get_build_requires self.run_setup() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\build_meta.py", line 341, in run_setup exec(code, locals()) File "<string>", line 288, in <module> File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\__init__.py", line 103, in setup return distutils.core.setup(**attrs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\core.py", line 185, in setup return run_commands(dist) ^^^^^^^^^^^^^^^^^^ File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\core.py", line 201, in run_commands dist.run_commands() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\dist.py", line 969, in run_commands self.run_command(cmd) File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\dist.py", line 989, in run_command super().run_command(command) File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\dist.py", line 988, in run_command cmd_obj.run() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\command\egg_info.py", line 318, in run self.find_sources() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\command\egg_info.py", line 326, in find_sources mm.run() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\command\egg_info.py", line 548, in run self.add_defaults() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\command\egg_info.py", line 586, in add_defaults sdist.add_defaults(self) File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\command\sdist.py", line 113, in add_defaults super().add_defaults() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\command\sdist.py", line 251, in add_defaults self._add_defaults_ext() File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\command\sdist.py", line 336, in _add_defaults_ext self.filelist.extend(build_ext.get_source_files()) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "<string>", line 204, in get_source_files File "C:\Users\talta\AppData\Local\Temp\pip-build-env-w9d6umo6\overlay\Lib\site-packages\setuptools\_distutils\cmd.py", line 107, in __getattr__ raise AttributeError(attr) AttributeError: cython_sources [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: subprocess-exited-with-error Getting requirements to build wheel did not run successfully. exit code: 1 See above for output. note: This error originates from a subprocess, and is likely not a problem with pip. [notice] A new release of pip is available: 23.1.2 -> 23.3.1 [notice] To update, run: C:\Users\talta\AppData\Local\Programs\Python\Python312\python.exe -m pip install --upgrade pip [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: subprocess-exited-with-error × pip subprocess to install build dependencies did not run successfully. │ exit code: 1 ╰─> See above for output. note: This error originates from a subprocess, and is likely not a problem with pip.  Any workaround or solutions? Comments and answers are much appreciated.

Answer: Edit: Adding the work arounds which worked for people. Two workarounds exist: 1.Preinstall cython<3, then install pyyaml without build isolation, then install the rest of your dependencies "AttributeError: cython_sources" with Cython 3.0.0a10 #601 (comment) $ pip install "cython<3.0.0" wheel $ pip install "pyyaml==5.4.1" --no-build-isolation $ pip install -r requirements.txt  2.Use a constraints file to force pip to use cython<3 at build time "AttributeError: cython_sources" with Cython 3.0.0a10 #601 (comment) $ echo "cython<3" > /tmp/constraint.txt $ PIP_CONSTRAINT=/tmp/constraint.txt pip install -r requirements.txt  Credit to @astrojuanlu https://github.com/yaml/pyyaml/issues/601#issuecomment-1813963845   Looks like there is an ongoing issue for installation of catboost==1.2.2 git links: https://github.com/catboost/catboost/issues/2520 https://github.com/catboost/catboost/issues/2469 PyYAML and Cython are the culprit. Here is the main git : https://github.com/yaml/pyyaml/issues/601