Running commands in Python container throws errors for incompatible ldd version

[mabadir]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

We have a python application that builds with NixPacks and working fine for runtime, however trying to execute commands on that container fails because NixPacks by defaults installs an old version of ldd to what is needed to execute commands in the container.

Once the try to execute any command, we get the error:

python: /usr/lib/x86_64-linux-gnu/libc.so.6: version 'GLIBC_2.36' not found (required by /nix/store/jx3kvf6mk8qdaw30dbpngwmgm4p23xdb-libxcrypt-4.4.36/lib/libcrypt.so.2)

To reproduce

1. Provider: Python
2. Run: execute any command in the venv inside the container
3. Throws this error:

python: /usr/lib/x86_64-linux-gnu/libc.so.6: version 'GLIBC_2.36' not found (required by /nix/store/jx3kvf6mk8qdaw30dbpngwmgm4p23xdb-libxcrypt-4.4.36/lib/libcrypt.so.2)

Expected behavior

No response

Environment

This is the Nixpacks plan

2:08:47 PM: ╔══════════════════════════════ Nixpacks v1.17.0 ══════════════════════════════╗
2:08:47 PM: ║ setup      │ python38, gcc                                                   ║
2:08:47 PM: ║──────────────────────────────────────────────────────────────────────────────║
2:08:47 PM: ║ install    │ python -m venv --copies /opt/venv && . /opt/venv/bin/activate   ║
2:08:47 PM: ║            │ && pip install -r requirements.txt                              ║
2:08:47 PM: ║──────────────────────────────────────────────────────────────────────────────║
2:08:47 PM: ║ start      │ newrelic-admin run-program gunicorn app.app:app -b              ║
2:08:47 PM: ║            │ 0.0.0.0:$PORT -w 3 -k gevent                                    ║
2:08:47 PM: ╚══════════════════════════════════════════════════════════════════════════════╝

The container is deployed to AWS ECS and the command is executed using ECS Execute command feature.

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