Bump GH CI to use `uv` throughout!

See docs: https://docs.astral.sh/uv/guides/integration/github/

Summary,
- drop `mypy` job for now since I'd like to move to trying `ty`.
- convert sdist built to `uv build`
- just run test suite on py3.13 for now, not sure if 3.12 will break due
  to the eg stuff or not?

.github/workflows/ci.yml

@@ -8,46 +8,70 @@ on:
   workflow_dispatch:
 
 jobs:
-
-  mypy:
-    name: 'MyPy'
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Setup python
-        uses: actions/setup-python@v2
-        with:
-          python-version: '3.11'
-
-      - name: Install dependencies
-        run: pip install -U . --upgrade-strategy eager -r requirements-test.txt
-
-      - name: Run MyPy check
-        run: mypy tractor/ --ignore-missing-imports --show-traceback
-
+  # ------ sdist ------
   # test that we can generate a software distribution and install it
   # thus avoid missing file issues after packaging.
+  #
+  # -[x] produce sdist with uv
+  # ------ - ------
   sdist-linux:
     name: 'sdist'
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Setup python
-        uses: actions/setup-python@v2
-        with:
-          python-version: '3.11'
+      - name: Install latest uv
+        uses: astral-sh/setup-uv@v6
 
-      - name: Build sdist
-        run: python setup.py sdist --formats=zip
+      - name: Build sdist as tar.gz
+        run: uv build --sdist --python=3.13
 
-      - name: Install sdist from .zips
-        run: python -m pip install dist/*.zip
+      - name: Install sdist from .tar.gz
+        run: python -m pip install dist/*.tar.gz
+
+  # ------ type-check ------
+  # mypy:
+  #   name: 'MyPy'
+  #   runs-on: ubuntu-latest
+
+  #   steps:
+  #     - name: Checkout
+  #       uses: actions/checkout@v4
+
+  #     - name: Install latest uv
+  #       uses: astral-sh/setup-uv@v6
+
+  #     # faster due to server caching?
+  #     # https://docs.astral.sh/uv/guides/integration/github/#setting-up-python
+  #     - name: "Set up Python"
+  #       uses: actions/setup-python@v6
+  #       with:
+  #         python-version-file: "pyproject.toml"
+
+  #     # w uv
+  #     # - name: Set up Python
+  #     #   run: uv python install
+
+  #     - name: Setup uv venv
+  #       run: uv venv .venv --python=3.13
+
+  #     - name: Install
+  #       run: uv sync --dev
+
+  #     # TODO, ty cmd over repo
+  #     # - name: type check with ty
+  #     #   run: ty ./tractor/
+
+  #     # - uses: actions/cache@v3
+  #     #     name: Cache uv virtenv as default .venv
+  #     #     with:
+  #     #       path: ./.venv
+  #     #       key: venv-${{ hashFiles('uv.lock') }}
+
+  #     - name: Run MyPy check
+  #       run: mypy tractor/ --ignore-missing-imports --show-traceback
 
 
   testing-linux:
@@ -59,32 +83,45 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python: ['3.11']
+        python-version: ['3.13']
         spawn_backend: [
           'trio',
-          'mp_spawn',
-          'mp_forkserver',
+          # 'mp_spawn',
+          # 'mp_forkserver',
         ]
 
     steps:
 
-      - name: Checkout
-        uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
-      - name: Setup python
-        uses: actions/setup-python@v2
+      - name: 'Install uv + py-${{ matrix.python-version }}'
+        uses: astral-sh/setup-uv@v6
         with:
-          python-version: '${{ matrix.python }}'
+          python-version: ${{ matrix.python-version }}
 
-      - name: Install dependencies
-        run: pip install -U . -r requirements-test.txt -r requirements-docs.txt --upgrade-strategy eager
+      # GH way.. faster?
+      # - name: setup-python@v6
+      #   uses: actions/setup-python@v6
+      #   with:
+      #     python-version: '${{ matrix.python-version }}'
 
-      - name: List dependencies
-        run: pip list
+      # consider caching for speedups?
+      # https://docs.astral.sh/uv/guides/integration/github/#caching
+
+      - name: Install the project w uv
+        run: uv sync --locked --all-extras --dev
+
+      # - name: Install dependencies
+      #   run: pip install -U . -r requirements-test.txt -r requirements-docs.txt --upgrade-strategy eager
+
+      - name: List deps tree
+        run: uv tree
 
       - name: Run tests
-        run: pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rsx
+        run: uv run pytest tests/ --spawn-backend=${{ matrix.spawn_backend }} -rsx
 
+  # XXX legacy NOTE XXX
+  #
   # We skip 3.10 on windows for now due to not having any collabs to
   # debug the CI failures. Anyone wanting to hack and solve them is very
   # welcome, but our primary user base is not using that OS.