ci: install nox via uv

.github/workflows/build.yml

@@ -43,25 +43,24 @@ jobs:
           # with the commit diff, because the merge may affect line numbers.
           ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
 
-      # installs using setup-python do not work for arm macOS 3.9 and below
-      - if: ${{ !(inputs.os == 'macos-latest' && contains(fromJSON('["3.7", "3.8", "3.9"]'), inputs.python-version) && inputs.python-architecture == 'x64') }}
-        name: Set up Python ${{ inputs.python-version }}
+      - name: Set up Python ${{ inputs.python-version }}
         uses: actions/setup-python@v6
+        id: install-python
         with:
           python-version: ${{ inputs.python-version }}
           architecture: ${{ inputs.python-architecture }}
           # PyPy can have FFI changes within Python versions, which creates pain in CI
           check-latest: ${{ startsWith(inputs.python-version, 'pypy') }}
 
-      # workaround for the above, only available for 3.9
-      - if: ${{ inputs.os == 'macos-latest' && contains(fromJSON('["3.9"]'), inputs.python-version) && inputs.python-architecture == 'x64' }}
-        name: Set up Python ${{ inputs.python-version }}
+      - name: Set UV_PYTHON to installed Python
+        shell: bash
+        run: echo "UV_PYTHON=${{ steps.install-python.outputs.python-path }}" >> $GITHUB_ENV
+
+      - name: Set up UV
         uses: astral-sh/setup-uv@v6
-        with:
-          python-version: cpython-${{ inputs.python-version }}-macos-x86-64
 
       - name: Install nox
-        run: python -m pip install --upgrade pip && pip install nox[uv]
+        run: uv tool install nox
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@master

.github/workflows/ci.yml

@@ -220,8 +220,7 @@ jobs:
       fail-fast: ${{ !contains(github.event.pull_request.labels.*.name, 'CI-no-fail-fast') }}
       matrix:
         rust: [stable]
-        python-version:
-          [
+        python-version: [
             "3.7",
             "3.8",
             "3.9",
@@ -235,7 +234,8 @@ jobs:
             "pypy3.9",
             "pypy3.10",
             "pypy3.11",
-            "graalpy24.2",
+            "graalpy24.2", # last graalpy 3.11 release
+            "graalpy25.0", # current graalpy 3.12 release
           ]
         platform:
           [