How to install cryptography from wheel on armhf

[cuu508]

Is it possible to install cryptography on ARM system from wheel?

My hardware is Raspberry Pi 400, and I'm running my experiments from inside Docker:

docker run -it python:3.9-slim-buster bash

Software versions:

root@3d5804a8efb0:/tmp# uname -a
Linux 3d5804a8efb0 5.10.60-v7l+ #1449 SMP Wed Aug 25 15:00:44 BST 2021 armv7l GNU/Linux
root@3d5804a8efb0:/tmp# python --version
Python 3.9.7
root@3d5804a8efb0:/tmp# pip --version
pip 21.2.4 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)

If I just run pip install cryptography it tries to build cryptography from source. Installation fails because rust is missing. I installed rust:

apt-get install build-essential libssl-dev libffi-dev python3-dev cargo

After this, pip install cryptography takes a long time but eventually completes with no errors.

The rust requirement and the long build time could be avoided by using binary wheel. Does cryptography have a wheel that would work on armhf, Linux and python 3.9? If yes, how can I make pip use it? Thanks in advance!

[alex]

We do not produce wheels for 32bit arm, only arm64. בתאריך יום ה׳, 30 בספט׳ 2021, 10:04, מאת Pēteris Caune ‏< ***@***.***>:

…

Is it possible to install cryptography on ARM system from wheel? My hardware is Raspberry Pi 400, and I'm running my experiments from inside Docker: docker run -it python:3.9-slim-buster bash Software versions: ***@***.***:/tmp# uname -a Linux 3d5804a8efb0 5.10.60-v7l+ #1449 SMP Wed Aug 25 15:00:44 BST 2021 armv7l GNU/Linux ***@***.***:/tmp# python --version Python 3.9.7 ***@***.***:/tmp# pip --version pip 21.2.4 from /usr/local/lib/python3.9/site-packages/pip (python 3.9) If I just run pip install cryptography it tries to build cryptography from source. Installation fails because rust is missing. I installed rust: apt-get install build-essential libssl-dev libffi-dev python3-dev cargo After this, pip install cryptography takes a long time but eventually completes with no errors. The rust requirement and the long build time could be avoided by using binary wheel. Does cryptography have a wheel that would work on armv7l, Linux and python 3.9? If yes, how can I make pip use it? Thanks in advance! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#6342>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAAGBANXDE3AHXFDB5DWOLUERU5PANCNFSM5FCNPQYQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[cuu508]

Thanks, OK, so there's no magic combination of pip options to make it work ;-)

Would you consider adding 32bit arm builds to the build system?

[tiran]

The BCM2711 in your Raspberry Pi 400 should support aarch64.

[alexdotgov]

(Comment from my work account)

We're not going to consider 32-bit ARM at the moment, no: #6286

[cuu508]

OK, understood. Thanks for the pointer, and for the quick replies!