pip install -r requirements.txt bug

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

Happens on both the portable and CLI install. I have Miniconda installed in path in my User account.

` error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [48 lines of output]
Traceback (most recent call last):
File "", line 2, in
exec(compile('''
~~~~^^^^^^^^^^^^
# This is -- a caller that pip uses to run setup.py
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<32 lines>...
exec(compile(setup_py_code, filename, "exec"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
''' % ('C:\\Users\\Kedar\\AppData\\Local\\Temp\\pip-install-hwy68y7o\\sentencepiece_53d5def506804eb0923518d163bfc000\\setup.py',), "", "exec"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 35, in
File "C:\Users\Kedar\AppData\Local\Temp\pip-install-hwy68y7o\sentencepiece_53d5def506804eb0923518d163bfc000\setup.py", line 128, in
subprocess.check_call([
~~~~~~~~~~~~~~~~~~~~~^^
'cmake',
^^^^^^^^
...<6 lines>...
'-DCMAKE_INSTALL_PREFIX=build\\root',
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
])
^^
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 414, in check_call
retcode = call(*popenargs, **kwargs)
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 395, in call
with Popen(*popenargs, **kwargs) as p:
~~~~~^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 1039, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pass_fds, cwd, env,
^^^^^^^^^^^^^^^^^^^
...<5 lines>...
gid, gids, uid, umask,
^^^^^^^^^^^^^^^^^^^^^^
start_new_session, process_group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 1554, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
# no special security
^^^^^^^^^^^^^^^^^^^^^
...<4 lines>...
cwd,
^^^^
startupinfo)
^^^^^^^^^^^^
FileNotFoundError: [WinError 2] The system cannot find the file specified
[end of output]

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

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
Failed to install ComfyUI dependencies. Please check your environment (`comfy
env`) and try again.
`

### Actual Behavior


### Steps to Reproduce

Run pip install -r requirements.txt or install ComftUI with CLI>

### Debug Logs

```powershell
Collecting sentencepiece (from -r requirements.txt (line 12))
Using cached sentencepiece-0.2.0.tar.gz (2.6 MB)
Preparing metadata (setup.py) ... error
error: subprocess-exited-with-error

× python setup.py egg_info did not run successfully.
│ exit code: 1
╰─> [48 lines of output]
Traceback (most recent call last):
File "", line 2, in
exec(compile('''
~~~~^^^^^^^^^^^^
# This is -- a caller that pip uses to run setup.py
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<32 lines>...
exec(compile(setup_py_code, filename, "exec"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
''' % ('C:\\Users\\Kedar\\AppData\\Local\\Temp\\pip-install-hwy68y7o\\sentencepiece_53d5def506804eb0923518d163bfc000\\setup.py',), "", "exec"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 35, in
File "C:\Users\Kedar\AppData\Local\Temp\pip-install-hwy68y7o\sentencepiece_53d5def506804eb0923518d163bfc000\setup.py", line 128, in
subprocess.check_call([
~~~~~~~~~~~~~~~~~~~~~^^
'cmake',
^^^^^^^^
...<6 lines>...
'-DCMAKE_INSTALL_PREFIX=build\\root',
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
])
^^
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 414, in check_call
retcode = call(*popenargs, **kwargs)
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 395, in call
with Popen(*popenargs, **kwargs) as p:
~~~~~^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 1039, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pass_fds, cwd, env,
^^^^^^^^^^^^^^^^^^^
...<5 lines>...
gid, gids, uid, umask,
^^^^^^^^^^^^^^^^^^^^^^
start_new_session, process_group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Kedar\miniconda3\Lib\subprocess.py", line 1554, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
# no special security
^^^^^^^^^^^^^^^^^^^^^
...<4 lines>...
cwd,
^^^^
startupinfo)
^^^^^^^^^^^^
FileNotFoundError: [WinError 2] The system cannot find the file specified
[end of output]

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

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
Failed to install ComfyUI dependencies. Please check your environment (`comfy
env`) and try again.
```

### Other

:(

从 requirements.txt 开始，尤其是查看第 12 行注明的 sentencepiece 条目，并在 Windows 上分别在 portable 和 CLI 配置中复现 pip install -r requirements.txt。检查 sentencepiece setup.py 的失败情况，以及 cmake 子进程是否可用；当依赖项能够成功安装且不会出现元数据生成错误时，即表示完成。

由索引模型根据 Issue 内容生成。