`python` and `poetry` plugins include `lib64` symlink as a second copy of the venv

[lengau]

Bug Description

When using the python or poetry plugin, a second copy of the lib directory is created in lib64 because it's a symlink. The charm works fine without that symlink, so we should just remove lib64 if it's a symlink. (If it's a directory, leave it.)

To Reproduce

Pack the charm below and view it in a zip file viewer

Environment

irrelevant

charmcraft.yaml

# This file configures Charmcraft.
# See https://juju.is/docs/sdk/charmcraft-config for guidance.

# (Required)
# The charm package name, no spaces
# See https://juju.is/docs/sdk/naming#heading--naming-charms for guidance.
name: basic-charm

# (Required)
# The charm type, either 'charm' or 'bundle'.
type: charm

# (Recommended)
title: Charm Template

# (Required)
summary: A very short one-line summary of the charm.

# (Required)
description: |
A single sentence that says what the charm is, concisely and memorably.

A paragraph of one to three short sentences, that describe what the charm does.

A third paragraph that explains what need the charm meets.

Finally, a paragraph that describes whom the charm is useful for.

# (Required for 'charm' type)
# A list of environments (OS version and architecture) where charms must be
# built on and run on.
bases:
- build-on:
- name: ubuntu
channel: "22.04"
run-on:
- name: ubuntu
channel: "22.04"

# (Optional) Configuration options for the charm
# This config section defines charm config options, and populates the Configure
# tab on Charmhub.
# More information on this section at https://juju.is/docs/sdk/charmcraft-yaml#heading--config
# General configuration documentation: https://juju.is/docs/sdk/config
config:
options:
# An example config option to customise the log level of the workload
log-level:
description: |
Configures the log level of gunicorn.

Acceptable values are: "info", "debug", "warning", "error" and "critical"
default: "info"
type: string

# The containers and resources metadata apply to Kubernetes charms only.
# See https://juju.is/docs/sdk/metadata-reference for a checklist and guidance.
# Remove them if not required.

# Your workload’s containers.
containers:
httpbin:
resource: httpbin-image

# This field populates the Resources tab on Charmhub.
resources:
# An OCI image resource for each container listed above.
# You may remove this if your charm will run without a workload sidecar container.
httpbin-image:
type: oci-image
description: OCI image for httpbin
# The upstream-source field is ignored by Juju. It is included here as a
# reference so the integration testing suite knows which image to deploy
# during testing. This field is also used by the 'canonical/charming-actions'
# Github action for automated releasing.
upstream-source: kennethreitz/httpbin

parts:
my-charm:
plugin: python
source: .
python-requirements: [requirements.txt]
override-build: |
/usr/bin/python3 -m pip install -U pip@https://files.pythonhosted.org/packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl
craftctl default

Relevant log output

n/a

[syncronize-issues-to-jira[bot]]

Thank you for reporting us your feedback!

The internal ticket has been created: https://warthogs.atlassian.net/browse/CRAFT-3587.

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