I've moved my builds to hatch. It's really nice.
Currently I have a github actions workflow that looks like

name: Client Python Package

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install Hatch
        run: pipx install hatch
      - name: Run tests
        run: hatch run test:test
      - name: Build dist
        run: hatch build
      - name: Publish on PyPI
        if: github.ref == 'refs/heads/main'
        run: hatch publish

which works great!

However there are a few issues that I'm having some trouble figuring out.

• Downloading the dependencies can take a while. Is there a way of enabling dependency caching? I couldn't figure out where hatch was caching dependencies.
• I have a test matrix for all the different versions of python, but I get Skipped 2 incompatible environments: test.py38 -> cannot locate Python: 38 test.py39 -> cannot locate Python: 39. What steps can I have to make sure these are available?

Any pointers on how to solve these would be much appreciated. Thanks.