Closed Issue: revert to using pip for ansible on 32bit RasPiOS [& ongoing issues w/ wheels, cryptography, rust]

[jvonau]

Fixes bug:

Stops polluting /etc/apt/sources.list.d/ and /usr/share/keyrings/ with files that are never used to install ansible while using "pip3 install". ie Ubuntu and RasPiOS-64bit

Description of changes proposed in this pull request:

Restores "pip3 install" for RasPiOS-32-bit

Smoke-tested on which OS or OS's:

Ref: Slimmed down version of #3456

[holta]

ASIDE: RasPiOS will probably fix its 32-bit problems in coming months if not in coming weeks. Background here:

• PR Til wheels / cryptography fixed: ansible-core 2.12.10+ PPA on 32-bit RasPiOS #3421
• PR Block iiab-install of JupyterHub & Calibre-Web on 32-bit OS's, til RasPiOS fixes Rust, wheels / cryptography #3422

[jvonau]

Ref: https://www.piwheels.org/project/cryptography/

[holta]

Ref: https://www.piwheels.org/project/cryptography/

Screenshot just for the record:

Recap: This PR uses pip3 install cryptography==37.0.4 which seems fine for now.

[holta]

FWIW / FYI

• cryptography 39.0.1 (released today) does not build on Bullseye, just like recent 38.0.x releases:
  https://www.piwheels.org/project/cryptography/
• piwheels does not currently support aarch64:
  piwheels does not currently support aarch64 piwheels/packages#119

Tangentially related:

• KA Lite fails to install on RPi 4: piwheels.org's "setuptools requires Python '>=3.5' but the running Python is 2.7.16" #2139
• PR Revert iiab#2160 in kalite/tasks/install.yml [piwheels' setuptools python issue worked around upstream?] #2173

[holta]

The latest colorful chart at https://www.piwheels.org/project/cryptography/ suggests IIAB should probably... transition from cryptography 37.0.4 (2022-07-05) to 39.0.2 (2023-03-02).

[jvonau]

Just remove the pinned versioning now that the upstream rust tool chain is corrected.

[holta]

Just remove the pinned versioning now that the upstream rust tool chain is corrected.

Definitely.

Or perhaps eliminate it entirely — e.g. if the PR below was tested on 32-bit RasPiOS to not need pip install cryptography at all?

• PR BUG FIX: use a virtual env for ansible #3494

[holta]

About 6 months later, Raspberry Pi OS and Debian issues with {cryptography, rust, piwheels} appear to now all be thankfully resolved:

• PR Block iiab-install of JupyterHub & Calibre-Web on 32-bit OS's, til RasPiOS fixes Rust, wheels / cryptography #3422
• Calibre-Web officially desupports 32-bit ARM due to lack of Rust (like JupyterHub?) #3479
• PR venv refinements for consideration, to tighten up scripts/ansible, deferring install of pip unless truly nec #3496

[holta]

2 bits of bad news just for the record:

1. Latest screenshot from https://www.piwheels.org/project/cryptography/ indicates cryptography 40.0.2 (released 2023-04-14) fails on both Debian 10 (Buster) and 11 (Bullseye):

   

2. "any wheels built with Rust will only work on Pi 2/3/4 not 1/Zero" for now... possibly 32-bit ARM issues might never be fully resolved in a stable way... as the world increasingly focuses on 64-bit:

   • Install rustup as piwheels user piwheels/piwheels#328 (comment)
   • Problem with package: cryptography Illegal Instruction on armv6 piwheels/packages#348

[jvonau]

2 bits of bad news just for the record:

1. Latest screenshot from https://www.piwheels.org/project/cryptography/ indicates cryptography 40.0.2 (released 2023-04-14) fails on both Debian 10 (Buster) and 11 (Bullseye):
   ![image](https://user-images.githubusercontent.com/2458907/233806443-fd7f00bd-a25e-4eeb-95b9-99e45526df70.png)

Debian-10 is unsupported so why mention it and just pin the version if need be, I showed you how to do that. Not the fault of this project that the wheel is unavailable could install the rust toolchain and build the package from scratch but would add greatly to the install time.

2. "any wheels built with Rust will only work on Pi 2/3/4 not 1/Zero" for now... possibly 32-bit ARM issues might never be fully resolved in a stable way... as the world increasingly focuses on 64-bit:
   
   * [Install rustup as piwheels user piwheels/piwheels#328 (comment)](https://github.com/piwheels/piwheels/pull/328#issuecomment-1518606329)
   * [Problem with package: cryptography Illegal Instruction on armv6 piwheels/packages#348](https://github.com/piwheels/packages/issues/348)

Told you the switch to the arm64 kernel is going to hurt a pile of workflows

[holta]

Just FYI 2 new piwheels releases (41.0.0 and 41.0.1) failed ~10 days ago:

https://www.piwheels.org/project/cryptography/

[holta]

Follow-up here:

• 2 bits of bad news just for the record [cryptography, piwheels, rust, Ansible] #3547