The error message indicates that the fdroid tool is not available in the default package registry for uvx (a tool runner for uv). This typically happens when:

Possible Issues and Fixes

1. fdroid is not installed in the current environment

• uvx (part of the uv toolchain) relies on packages being available in its registry or locally.
• Solution: Install fdroid manually or ensure it is available in the environment where uvx is running.

# Try installing fdroidserver (the Python package for fdroid tools)
pip install fdroidserver

If you're using a virtual environment, activate it first.

2. uvx cannot resolve fdroid from the registry

• uvx may not have access to the PyPI registry or the package name is incorrect.
• Solution: Explicitly specify the package name or use uv pip to install it first.

uv pip install fdroidserver
uvx fdroidserver lint fr.gouv.tchap.a

Note: The command uses fdroidserver (the actual Python package name) instead of fdroid.

3. Typo or incorrect tool name

• The tool might be named differently in the fdroidserver package.
• Solution: Check the correct command name in the  fdroidserver documentation.

# Example: The correct command might be `fdroid lint` instead of `fdroidserver lint`
uvx fdroidserver lint fr.gouv.tchap.a

4. uvx is not configured to use the correct Python environment

• If you have multiple Python environments, uvx might not be using the one where fdroidserver is installed.
• Solution: Ensure uvx is using the correct environment or reinstall fdroidserver in the active environment.

# Check active Python environment
which python
which uvx

# Reinstall fdroidserver in the correct environment
uv pip install fdroidserver

5. Linux Mint 22.3 Specifics

• If you installed uv via a system package manager (e.g., apt), it might not be the latest version or might lack dependencies.
• Solution: Install uv via pip to ensure you have the latest version.

pip install uv

Next Steps

1. Verify the package name: Confirm if the tool is fdroid or fdroidserver.
2. Install dependencies: Ensure fdroidserver is installed in the environment uvx is using.
3. Test with uv pip: Use uv pip to install and run the tool explicitly.

Try this and let me know if the issue persists!