Imani Pelton

### Bug Description When building a core20 project _not_ using the architecture shorthand, `--build-for` produces the following error: ``` Error: Cannot use --build-on, architecture list is already set in snapcraft.yaml....

- [x] Have you followed the [guidelines for contributing](https://github.com/canonical/snapcraft/blob/main/CONTRIBUTING.md)? - [x] Have you signed the [CLA](http://www.ubuntu.com/legal/contributors/)? - [ ] Have you successfully run `make lint`? - [ ] Have you...

Use pydantic instead of jsonschema for legacy project

1

### What needs to get done The legacy code for parsing the project should use Pydantic models instead of validating with the `jsonschema` library. ### Why it needs to get...

Use pydantic instead of jsonschema for legacy store

1

### What needs to get done The legacy code for parsing the store responses should use Pydantic models instead of validating with the `jsonschema` library. ### Why it needs to...

### Summary When attempting to override a method of a parent class with `-> Self` in a child class, calls to the parent's method are considered invalid. ```py from typing_extensions...