Installation failure

[UgoPoddine]

Hello,

I was using aprsd without special issue on a RaspberryPI4 sine yesterday, installed using pip3
I was forced to rebuild the image, but now the installation failed with the following error.
I tried also :
a) to install criptography from repository
b) to install rust separately
c) to install openssl from repository

... but the same error is still there.

System is :
6.1.21+ #1642 Mon Apr 3 17:19:14 BST 2023 armv6l GNU/Linux

Python :
Python 3.9.2

pip3 :
pip 23.2.1

Can you help ?
Thank-you
73 IU1IPB ugo

  running build_ext
  running build_rust

      =============================DEBUG ASSISTANCE=============================
      If you are seeing a compilation error please try the following steps to
      successfully install cryptography:
      1) Upgrade to the latest pip and try again. This will fix errors for most
         users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
      2) Read https://cryptography.io/en/latest/installation/ for specific
         instructions for your platform.
      3) Check our frequently asked questions for more information:
         https://cryptography.io/en/latest/faq/
      4) Ensure you have a recent Rust toolchain installed:
         https://cryptography.io/en/latest/installation/#rust

      Python: 3.9.2
      platform: Linux-6.1.21+-armv6l-with-glibc2.31
      pip: n/a
      setuptools: 68.0.0
      setuptools_rust: 1.6.0
      rustc: n/a
      =============================DEBUG ASSISTANCE=============================

  error: can't find Rust compiler

  If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it. Installing from the wheel would avoid the need for a Rust compiler.

  To update pip, run:

      pip install --upgrade pip

  and then retry package installation.

  If you did intend to build this package from source, try installing a Rust compiler from your system package manager and ensure it is on the PATH during installation. Alternatively, rustup (available at https://rustup.rs) is the recommended way to download and update the Rust compiler toolchain.

  This package requires Rust >=1.56.0.
  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for cryptography
Failed to build cryptography
ERROR: Could not build wheels for cryptography, which is required to install pyproject.toml-based projects

[UgoPoddine]

Sorry for the mistake : the Raspberry is a PI2+ (not PI4), on armv6l

UP

[hemna]

yah this is not surprising. The problem is with the cryptography library being built with rustc instead of C now and unfortunately, most debian based systems have rustc and the build chain for rustc apps is very very old and doesn't work.

https://forums.raspberrypi.com/viewtopic.php?t=343187

[hemna]

https://cryptography.io/en/latest/faq/

[hemna]

This link suggests https://stackoverflow.com/questions/66118337/how-to-get-rid-of-cryptography-build-error

# upgrade pip
pip install --upgrade pip

# install rust toolchain
curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain stable -y
PATH="/root/.cargo/bin:${PATH}"

# build from source
pip install cryptography --no-cache-dir --only-binary=:all: --force-reinstall --upgrade

[UgoPoddine]

Hello, Thanks. As I wrote,  pip is at its last version. I was a bit worried to install the full toolchain on a weak Raspberry and to build from source, but I will try and I will let you know. Ugo Il giorno 26 lug 2023, 20:52, alle ore 20:52, "Walter A. Boring IV" ***@***.***> ha scritto:

…

This link suggests https://stackoverflow.com/questions/66118337/how-to-get-rid-of-cryptography-build-error ``` # upgrade pip pip install --upgrade pip # install rust toolchain curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain stable -y PATH="/root/.cargo/bin:${PATH}" # build from source pip install cryptography --no-cache-dir --only-binary=:all: --force-reinstall --upgrade ``` -- Reply to this email directly or view it on GitHub: #126 (comment) You are receiving this because you authored the thread. Message ID: ***@***.***>

[hemna]

I have removed the need for cryptography now that webchat doesn't do ssl by default. You should be able to install this just fine now.

[hemna]

I am closing this due to lack of feedback from the original reporter as well as the removal of the cryptography dependency that caused the issue.