Unsolved dependency issue

### Solution to issue cannot be found in the documentation.

- [x] I checked the documentation.

### Issue

Improperly closed in: https://github.com/conda-forge/matplotlib-feedstock/issues/419

### Installed packages

```shell
tba
```

### Environment info

```shell
tba
```

Start by reading the referenced conda-forge/matplotlib-feedstock issue 419 to understand what was improperly closed. The installed packages and environment sections are still marked “tba,” so collect that information before determining the dependency failure and what a complete resolution would require.

Written by the indexing model from the issue text.