Installing Rust Compiler for Flask app

[Yiren_Lu]

I am trying to deploy a Flask/Python application with Python3.8.2 on Render. The application depends on the Python package Tokenizers, which requires a Rust compiler. Is there a way to install a Rust compiler on Render?

Apr 13 01:15:56 PM    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.
Apr 13 01:15:56 PM    ----------------------------------------
Apr 13 01:15:56 PM    ERROR: Failed building wheel for tokenizers
Apr 13 01:15:56 PM    Running setup.py clean for tokenizers
Apr 13 01:15:56 PM    ERROR: Command errored out with exit status 1:
Apr 13 01:15:56 PM     command: /opt/render/project/src/.venv/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-zqfrv5yg/tokenizers/setup.py'"'"'; __file__='"'"'/tmp/pip-install-zqfrv5yg/tokenizers/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' clean --all
Apr 13 01:15:56 PM         cwd: /tmp/pip-install-zqfrv5yg/tokenizers
Apr 13 01:15:56 PM    Complete output (17 lines):
Apr 13 01:15:56 PM    running clean
Apr 13 01:15:56 PM    removing 'build/lib.linux-x86_64-cpython-38' (and everything under it)
Apr 13 01:15:56 PM    'build/bdist.linux-x86_64' does not exist -- can't clean it
Apr 13 01:15:56 PM    'build/scripts-3.8' does not exist -- can't clean it
Apr 13 01:15:56 PM    removing 'build'

[al_ps]

Hi,

I replied to the ticket you also opened, I’ll share the same reply here for completeness:

Rust tools aren’t available when using the Python Native Environment. If you require both Python & Rust, you might be able to install Rust as part of your Build Command. Or, to have complete control over the environment, you could use Docker.

Alan