GPT4All python binding on Intel Mac is easy to fix

[MarcusUppmax]

Bug Report

The python module says that running GPT4All on an Apple Silicon mac through Rosetta isn't supported. I was trying to run it on my Intel mac, and was running into a crash when importing the module on line 30-something of _pyllmodel.py. Since I wasn't using Rosetta, and that line was just supposed to detect it (I think?), I commented it out and everything now works great. I didn't make a PR because I'm not at all sure what you're even doing with that code.

Steps to Reproduce

1. Have a MacBook Pro from 2018
2. pip install gpt4all
3. in python, import gpt4all

Expected Behavior

I expect gpt4all to be loaded.

Your Environment

• Bindings version (e.g. "Version" from pip show gpt4all): 2.8.2
• Operating System: MacOS 12.something and MacOS 15.1

[charlod]

I’m encountering the same issue on a Mac Intel. Looking at the source code the issue seems to be caused by the check_rosetta function in_pyllmodel.py lines 42-49 in the main branch as mentioned above:

# Detect Rosetta 2
@_operator_call
def check_rosetta() -> None:
    if platform.system() == "Darwin" and platform.processor() == "i386":
        p = subprocess.run("sysctl -n sysctl.proc_translated".split(), capture_output=True, text=True)
        if p.returncode == 0 and p.stdout.strip() == "1":
            raise RuntimeError(textwrap.dedent("""\
                Running GPT4All under Rosetta is not supported due to CPU feature requirements.
                Please install GPT4All in an environment that uses a native ARM64 Python interpreter.
            """).strip())

Followed the same steps to reproduce and got:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/abc/lib/python3.11/site-packages/gpt4all/__init__.py", line 1, in <module>
    from .gpt4all import CancellationError as CancellationError, Embed4All as Embed4All, GPT4All as GPT4All
  File ""/Users/abc/lib/python3.11/site-packages/gpt4all/gpt4all.py", line 23, in <module>
    from ._pyllmodel import (CancellationError as CancellationError, EmbCancelCallbackType, EmbedResult as EmbedResult,
  File ""/Users/abc/python3.11/site-packages/gpt4all/_pyllmodel.py", line 34, in <module>
    if subprocess.run(
       ^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/[email protected]/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['sysctl', '-n', 'sysctl.proc_translated']' returned non-zero exit status 1.

When sysctl.proc_translated key doesn’t exist (which is the case for Intel Macs as it doesn't support Rosetta 2), the subprocess.run call fails with a CalledProcessError.

[yalmaz-ali]

Same issue when I try:

from gpt4all import GPT4All

[kasiperumal]

Same issue with macOS 15.3,

from gpt4all import GPT4All as GPT4AllModel

subprocess.CalledProcessError: Command '['sysctl', '-n', 'sysctl.proc_translated']' returned non-zero exit status 1.