Use uv pip instead of pip. (#23)

* Use `uv pip` instead of `pip`.

* Use caching for CRAN R packages.

* Drop the combo python-3.12/ubunty-latest because of odd error message.

Author: lgautier

.github/workflows/pythonpackage.yml

@@ -15,9 +15,15 @@ jobs:
       uses: actions/setup-python@v4
       with:
         python-version: "3.10"
+    - name: Install uv
+      uses: astral-sh/setup-uv@v6
+    - name: Create venv
+      run: |
+           uv venv --no-project --no-config --no-managed-python rpy2-arrow-env
     - name: Lint with flake8
       run: |
-        pip install flake8
+        source rpy2-arrow-env/bin/activate
+        uv pip install flake8
         flake8 rpy2_arrow --count --max-complexity=10 --max-line-length=127 --statistics
   build:
     runs-on: ${{ matrix.os }}
@@ -34,6 +40,9 @@ jobs:
           SYSTEM_DEPS: sudo apt-get install -y libcurl4-gnutls-dev
         - os: macOS-latest
           SYSTEM_DEPS: brew install curl
+        exclude:
+        - python-version: "3.12"
+          os: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
@@ -59,9 +68,19 @@ jobs:
             curl -LO https://mac.r-project.org/bin/darwin20/arm64/"${name}"
             sudo tar xJf "${name}" -C /
         done
-    - name: Install R dependencies
+    - uses: r-lib/actions/setup-r-dependencies@v2
+      with:
+        cache-version: 2
+        extra-packages: |
+          any::assertthat
+          any::cpp11
+          any::tidyselect
+          any::vctrs
+          any::R6
+          any::purrr
+          any::bit64
+    - name: Install R arrow package
       run: |
-        install.packages(c("assertthat", "cpp11", "tidyselect", "vctrs", "R6", "purrr", "bit64"))
         Sys.setenv("NOT_CRAN" = "true")
         install.packages("arrow")
       shell: Rscript {0}
@@ -78,21 +97,30 @@ jobs:
         Sys.setenv(NOT_CRAN = "true")
         install.packages("polars", repos = "https://community.r-multiverse.org")
       shell: Rscript {0}
+    - name: Install uv
+      uses: astral-sh/setup-uv@v6
+    - name: Create venv
+      run: |
+           uv venv --no-project --no-config --no-managed-python rpy2-arrow-env
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements.txt
-        pip install git+https://github.com/rpy2/rpy2-r6
+        source rpy2-arrow-env/bin/activate
+        uv pip install --upgrade pip
+        uv pip install -r requirements.txt
+        uv pip install git+https://github.com/rpy2/rpy2-r6
     - name: Build package
       run: |
-        pip install build
+        source rpy2-arrow-env/bin/activate
+        uv pip install build
         python -m build 
     - name: Install package
       run: |
-        pip install $(ls -t1 dist/*.whl | tail -1)'[all]'
+        source rpy2-arrow-env/bin/activate
+        uv pip install $(ls -t1 dist/*.whl | tail -1)'[all]'
     - name: Test with pytest
       run: |
+        source rpy2-arrow-env/bin/activate
         export LD_LIBRARY_PATH=$(python -m rpy2.situation LD_LIBRARY_PATH)
-        pip install pytest codecov pytest-cov
-        pip install pandas
+        uv pip install pytest codecov pytest-cov
+        uv pip install pandas
         pytest --cov rpy2_arrow.pyarrow_rarrow --cov rpy2_arrow.r6b --cov rpy2_arrow.polars rpy2_arrow/tests*.py