Issue installing on M1 Mac

Describe the bug

Default Locust installation is not working under M1 Mac.

Already read:

• https://github.com/locustio/locust/issues/2115
• https://github.com/locustio/locust/issues/1949

I tried switching gevent versions to those shown on those PRs comments but failed to install (clang compiler issues on other packages) on my machine. I include a log of the issue on the Steps to Reproduce, but here’s a pip freeze’s output:

Brotli==1.0.9
certifi==2022.9.24
charset-normalizer==2.1.1
click==8.1.3
ConfigArgParse==1.5.3
Flask==2.2.2
Flask-BasicAuth==0.2.0
Flask-Cors==3.0.10
gevent==22.10.2
geventhttpclient==2.0.8
greenlet==2.0.1
idna==3.4
itsdangerous==2.1.2
Jinja2==3.1.2
locust==2.13.0
MarkupSafe==2.1.1
msgpack==1.0.4
psutil==5.9.4
pyzmq==24.0.1
requests==2.28.1
roundrobin==0.0.4
six==1.16.0
typing_extensions==4.4.0
urllib3==1.26.12
Werkzeug==2.2.2
zope.event==4.5.0
zope.interface==5.5.1

Expected behavior

Locust to be installed and working on ARM-based Mac.

Actual behavior

Shows an issue with g-event.

Steps to reproduce

$ python3 -m venv ./venv && source ./venv/bin/activate && pip --version && python --version && uname -a && pip install locust && locust


pip 22.2.2 from /Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/pip (python 3.10)
Python 3.10.8
Darwin gojira.local 22.1.0 Darwin Kernel Version 22.1.0: Sun Oct  9 20:14:30 PDT 2022; root:xnu-8792.41.9~2/RELEASE_ARM64_T8103 arm64
Collecting locust
  Using cached locust-2.13.0-py3-none-any.whl (823 kB)
Collecting psutil>=5.6.7
  Using cached psutil-5.9.4-cp38-abi3-macosx_11_0_arm64.whl (244 kB)
Collecting gevent>=20.12.1
  Using cached gevent-22.10.2-cp310-cp310-macosx_10_9_universal2.whl (1.9 MB)
Collecting Flask-BasicAuth>=0.2.0
  Using cached Flask_BasicAuth-0.2.0-py3-none-any.whl
Collecting typing-extensions>=3.7.4.3
  Using cached typing_extensions-4.4.0-py3-none-any.whl (26 kB)
Collecting geventhttpclient>=2.0.2
  Using cached geventhttpclient-2.0.8-cp310-cp310-macosx_11_0_arm64.whl (42 kB)
Collecting roundrobin>=0.0.2
  Using cached roundrobin-0.0.4-py3-none-any.whl
Collecting Werkzeug>=2.0.0
  Using cached Werkzeug-2.2.2-py3-none-any.whl (232 kB)
Collecting requests>=2.23.0
  Using cached requests-2.28.1-py3-none-any.whl (62 kB)
Collecting flask>=2.0.0
  Using cached Flask-2.2.2-py3-none-any.whl (101 kB)
Collecting ConfigArgParse>=1.0
  Using cached ConfigArgParse-1.5.3-py3-none-any.whl (20 kB)
Collecting pyzmq!=23.0.0,>=22.2.1
  Using cached pyzmq-24.0.1-cp310-cp310-macosx_10_15_universal2.whl (1.8 MB)
Collecting Flask-Cors>=3.0.10
  Using cached Flask_Cors-3.0.10-py2.py3-none-any.whl (14 kB)
Collecting msgpack>=0.6.2
  Using cached msgpack-1.0.4-cp310-cp310-macosx_11_0_arm64.whl (69 kB)
Collecting Jinja2>=3.0
  Using cached Jinja2-3.1.2-py3-none-any.whl (133 kB)
Collecting click>=8.0
  Using cached click-8.1.3-py3-none-any.whl (96 kB)
Collecting itsdangerous>=2.0
  Using cached itsdangerous-2.1.2-py3-none-any.whl (15 kB)
Collecting Six
  Using cached six-1.16.0-py2.py3-none-any.whl (11 kB)
Collecting zope.event
  Using cached zope.event-4.5.0-py2.py3-none-any.whl (6.8 kB)
Collecting zope.interface
  Using cached zope.interface-5.5.1-cp310-cp310-macosx_12_0_arm64.whl
Requirement already satisfied: setuptools in ./venv/lib/python3.10/site-packages (from gevent>=20.12.1->locust) (65.4.1)
Collecting greenlet>=2.0.0
  Using cached greenlet-2.0.1-cp310-cp310-macosx_12_0_arm64.whl
Collecting certifi
  Using cached certifi-2022.9.24-py3-none-any.whl (161 kB)
Collecting brotli
  Using cached Brotli-1.0.9-cp310-cp310-macosx_10_9_universal2.whl (786 kB)
Collecting idna<4,>=2.5
  Using cached idna-3.4-py3-none-any.whl (61 kB)
Collecting charset-normalizer<3,>=2
  Using cached charset_normalizer-2.1.1-py3-none-any.whl (39 kB)
Collecting urllib3<1.27,>=1.21.1
  Using cached urllib3-1.26.12-py2.py3-none-any.whl (140 kB)
Collecting MarkupSafe>=2.1.1
  Using cached MarkupSafe-2.1.1-cp310-cp310-macosx_10_9_universal2.whl (17 kB)
Installing collected packages: roundrobin, msgpack, brotli, zope.interface, zope.event, urllib3, typing-extensions, Six, pyzmq, psutil, MarkupSafe, itsdangerous, idna, greenlet, ConfigArgParse, click, charset-normalizer, certifi, Werkzeug, requests, Jinja2, gevent, geventhttpclient, flask, Flask-Cors, Flask-BasicAuth, locust
Successfully installed ConfigArgParse-1.5.3 Flask-BasicAuth-0.2.0 Flask-Cors-3.0.10 Jinja2-3.1.2 MarkupSafe-2.1.1 Six-1.16.0 Werkzeug-2.2.2 brotli-1.0.9 certifi-2022.9.24 charset-normalizer-2.1.1 click-8.1.3 flask-2.2.2 gevent-22.10.2 geventhttpclient-2.0.8 greenlet-2.0.1 idna-3.4 itsdangerous-2.1.2 locust-2.13.0 msgpack-1.0.4 psutil-5.9.4 pyzmq-24.0.1 requests-2.28.1 roundrobin-0.0.4 typing-extensions-4.4.0 urllib3-1.26.12 zope.event-4.5.0 zope.interface-5.5.1

[notice] A new release of pip available: 22.2.2 -> 22.3.1
[notice] To update, run: pip install --upgrade pip
Traceback (most recent call last):
  File "/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/bin/locust", line 5, in <module>
    from locust.main import main
  File "/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/locust/__init__.py", line 9, in <module>
    from gevent import monkey
  File "/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/__init__.py", line 86, in <module>
    from gevent._hub_local import get_hub
  File "/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_hub_local.py", line 101, in <module>
    import_c_accel(globals(), 'gevent.__hub_local')
  File "/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_util.py", line 148, in import_c_accel
    mod = importlib.import_module(cname)
  File "/opt/homebrew/Cellar/python@3.10/3.10.8/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
ImportError: dlopen(/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_gevent_c_hub_local.cpython-310-darwin.so, 0x0002): tried: '/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_gevent_c_hub_local.cpython-310-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_gevent_c_hub_local.cpython-310-darwin.so' (no such file), '/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_gevent_c_hub_local.cpython-310-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64'))

My assumption is that I need to lock some dependencies versions (gevent from what I read) in order to make it work but I’m unsure as to how to find the ones that should/would work on my setup. Also I tried updating pip to the patch version bump, but it made no difference on resolving gevent’s version.

Environment

• OS: MacOS Ventura 13.0.1
• Python version: 3.10.8
• Locust version: 2.13.0
• Locust command line that you ran: locust (expected help and/or error message)
• Locust file contents (anonymized if necessary): don’t even have a locustfile.py yet, was following installation instructions on locust.io. Thanks in advance!

[humbertowoody]

Hey @cyberw! Good news!

Also, for everyone using an ARM-based Mac, I found the command that not only fixed Locust’s installation, but it helped me on other projects, perhaps it’s useful in the future:

arch -arm64 pip install --no-cache-dir locust --no-binary :all:

As it compiles everything from source (I assume) there’s no way for a dependency to be other architecture! I’m happily back on track working without a VM 😃 I still wanted to thank you so much! And sorry for the not-locust-specific issue, I hope this can help others running into the same problems in the future 😃

[cyberw]

I think this is the core of your problem: '/Users/humbertowoody/Proyectos/pago46/swarm-tester/venv/lib/python3.10/site-packages/gevent/_gevent_c_hub_local.cpython-310-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')

Check out https://stackoverflow.com/questions/72289889/how-do-i-fix-the-mach-o-but-wrong-architecture-error-in-pycharm

Or try googling the error message in combination with gevent.

You could also try pip install --only-binary :all: gevent (so pip will only try pre-compiled versions of gevent, if there are any)

I’m sorry people running on apple silicon are having so many issues, but there isn’t a lot we can do on the locust side. I’m getting an M1 soon and then I might have some more experience 😛