more conditional ci runs (#2103)

.github/workflows/benchmark.yaml

@@ -1,7 +1,9 @@
 name: Benchmark
 
 on:
-  - pull_request
+  pull_request:
+    paths:
+      - 'polars/**'
 jobs:
   test:
     runs-on: ubuntu-latest

.github/workflows/build-test.yaml

@@ -1,8 +1,11 @@
-name: Build and test
+name: Build and test rust
 
 on:
-  - pull_request
+  pull_request:
+    paths:
+      - 'polars/**'
 jobs:
+
   test-rust:
     name: Build and test Rust
     runs-on: ubuntu-latest
@@ -61,48 +64,3 @@ jobs:
           cargo miri setup
           cargo clean
           make miri
-
-  test-python:
-    name: Build and test Python
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [ "3.6", "3.10" ]
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install latest Rust nightly
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2021-12-02
-          override: true
-          components: rustfmt, clippy
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r py-polars/build.requirements.txt
-      - name: Run formatting checks
-        run: |
-          cd py-polars && black --check . && blackdoc --check . && isort --check . && rustup override set nightly-2021-12-02 && cargo fmt --all -- --check && cd ..
-      - name: Run linting
-        run: |
-          cd py-polars && flake8 && cd ..
-      - name: Run type checking
-        run: |
-          cd py-polars && mypy && cd ..
-      - name: Run tests
-        run: |
-          export RUSTFLAGS="-C debuginfo=0"
-          cd py-polars && rustup override set nightly-2021-12-02 && make venv && make test-with-cov
-          cargo clippy
-      - name: Check doc examples
-        run: |
-          cd py-polars && make doctest
-      # test if we can import polars without any requirements
-      - name: Import polars
-        run: |
-          pip uninstall pandas -y
-          python -c "import polars"

.github/workflows/docs_check.yaml

@@ -1,7 +1,9 @@
 name: Docs check
 
 on:
-  - pull_request
+  pull_request:
+    paths:
+    - 'py-polars/**'
 jobs:
   test:
     name: Docs check

.github/workflows/test-python.yaml

@@ -0,0 +1,52 @@
+name: Test python
+
+on:
+  pull_request:
+    paths:
+      - 'py-polars/**'
+      - 'polars/**'
+jobs:
+  test-python:
+    name: Build and test Python
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ "3.6", "3.10" ]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install latest Rust nightly
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly-2021-12-02
+          override: true
+          components: rustfmt, clippy
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r py-polars/build.requirements.txt
+      - name: Run formatting checks
+        run: |
+          cd py-polars && black --check . && blackdoc --check . && isort --check . && rustup override set nightly-2021-12-02 && cargo fmt --all -- --check && cd ..
+      - name: Run linting
+        run: |
+          cd py-polars && flake8 && cd ..
+      - name: Run type checking
+        run: |
+          cd py-polars && mypy && cd ..
+      - name: Run tests
+        run: |
+          export RUSTFLAGS="-C debuginfo=0"
+          cd py-polars && rustup override set nightly-2021-12-02 && make venv && make test-with-cov
+          cargo clippy
+      - name: Check doc examples
+        run: |
+          cd py-polars && make doctest
+      # test if we can import polars without any requirements
+      - name: Import polars
+        run: |
+          pip uninstall pandas -y
+          python -c "import polars"

.github/workflows/test-windows-python.yaml

@@ -0,0 +1,37 @@
+name: Windows tests python
+
+on:
+  pull_request:
+    paths:
+      - 'py-polars/**'
+jobs:
+  test-python:
+    name: Build and test Python
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install latest Rust nightly
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly-2021-12-02
+          override: true
+          components: rustfmt, clippy
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.9"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r py-polars/build.requirements.txt
+      - name: Run tests
+        shell: bash
+        run: |
+          export RUSTFLAGS="-C debuginfo=0"
+          cd py-polars && rustup override set nightly-2021-12-02 && make build-and-test-no-venv
+          cargo clippy
+      # test if we can import polars without any requirements
+      - name: Import polars
+        run: |
+          pip uninstall pandas -y
+          python -c "import polars"

.github/workflows/test-windows.yaml

@@ -1,7 +1,10 @@
-name: Windows tests
+name: Windows tests rust
 
 on:
-  - pull_request
+  pull_request:
+    paths:
+      - 'py-polars/**'
+      - 'polars/**'
 jobs:
   test-rust:
     runs-on: windows-latest
@@ -15,34 +18,3 @@ jobs:
       - name: Run tests
         run: |
           cd polars && make test
-
-  test-python:
-    name: Build and test Python
-    runs-on: windows-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install latest Rust nightly
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly-2021-12-02
-          override: true
-          components: rustfmt, clippy
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.9"
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r py-polars/build.requirements.txt
-      - name: Run tests
-        shell: bash
-        run: |
-          export RUSTFLAGS="-C debuginfo=0"
-          cd py-polars && rustup override set nightly-2021-12-02 && make build-and-test-no-venv
-          cargo clippy
-      # test if we can import polars without any requirements
-      - name: Import polars
-        run: |
-          pip uninstall pandas -y
-          python -c "import polars"