build: migrate from poetry to uv

Convert to PEP 621 pyproject with uv_build backend (flat layout:
module-root="", module-name="datastream"). Replace poetry.lock with
uv.lock, pin Python 3.10. Migrate test, publish, and gh-pages CI
workflows to setup-uv + uv sync/run/build/publish. Library (published
to PyPI); no Dockerfiles, no private deps.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: FelixAbrahamsson

.github/workflows/gh-pages.yml

@@ -14,23 +14,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      
-      - name: Set up Python
-        uses: actions/setup-python@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
           python-version: '3.10'
-          
+          enable-cache: true
+
       - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install poetry
-          poetry install
-          
+        run: uv sync --locked
+
       - name: Build documentation
-        run: poetry run mkdocs build
-        
+        run: uv run mkdocs build
+
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./site 
+          publish_dir: ./site

.github/workflows/publish.yml

@@ -12,41 +12,32 @@ jobs:
         python-version: [3.9]
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
           python-version: ${{ matrix.python-version }}
-
-      - name: Install poetry
-        run: |
-          python -m pip install --upgrade pip
-          curl -sSL https://install.python-poetry.org | python - --version 1.2.2
-          echo "${HOME}/.local/bin" >> $GITHUB_PATH
+          enable-cache: true
 
       - name: Install dependencies
-        run: |
-          poetry install --no-root
+        run: uv sync --locked
 
       - name: Run tests
-        run: |
-          poetry run pytest
+        run: uv run pytest
 
       - name: Build wheels
         run: |
-          poetry version $(git tag --points-at HEAD)
-          poetry build
+          uv version "$(git tag --points-at HEAD)"
+          uv build
 
       - name: Test install package
         run: |
-          poetry new test-install
-          cd test-install
-          poetry add ../dist/$(ls ../dist/*.whl)
-
-          poetry run python -c "import datastream"
+          uv venv /tmp/test-install
+          uv pip install --python /tmp/test-install ./dist/*.whl
+          /tmp/test-install/bin/python -c "import datastream"
 
       - name: Upload
         env:
-          USERNAME: __token__
-          PASSWORD: ${{ secrets.PYPI_TOKEN }}
-        run: |
-          poetry publish --username=$USERNAME --password=$PASSWORD
+          UV_PUBLISH_USERNAME: __token__
+          UV_PUBLISH_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+        run: uv publish

.github/workflows/test.yml

@@ -10,34 +10,18 @@ jobs:
         python-version: [3.9, "3.10"]
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
 
-      - name: Cache pip
-        uses: actions/cache@v2
+      - name: Install uv
+        uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
         with:
-          path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('pyproject.toml') }}-${{ hashFiles('poetry.lock') }}-${ GITHUB_REF }
-          restore-keys: |
-            ${{ runner.os }}-pip-
-            ${{ runner.os }}-
-
-      - name: Install poetry
-        run: |
-          python -m pip install --upgrade pip
-          curl -sSL https://install.python-poetry.org | python - --version 1.2.2
-          echo "${HOME}/.local/bin" >> $GITHUB_PATH
+          python-version: ${{ matrix.python-version }}
+          enable-cache: true
 
       - name: Install dependencies
-        run: |
-          poetry install
+        run: uv sync --locked
 
       - name: Run tests
-        run: |
-          poetry run pytest
+        run: uv run pytest
 
       - name: Build wheels
-        run: |
-          poetry build
+        run: uv build

.python-version

@@ -0,0 +1 @@
+3.10