build configuration updates

.gitattributes

@@ -0,0 +1,2 @@
+# SCM syntax highlighting & preventing 3-way merges
+pixi.lock merge=binary linguist-language=YAML linguist-generated=true

.github/workflows/test_and_deploy.yml

@@ -18,21 +18,20 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: [3.7, 3.8, 3.9]
+        python-version: ['3.10', '3.11', '3.12', '3.13']
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install flit
-          flit install --deps develop
+          pip install -e ".[test]"
 
       # these libraries, along with pytest-xvfb (added in the `deps` in tox.ini),
       # enable testing on Qt on linux
@@ -48,7 +47,7 @@ jobs:
       - name: Install Windows OpenGL
         if: runner.os == 'Windows'
         run: |
-          git clone --depth 1 git://github.com/pyvista/gl-ci-helpers.git
+          git clone --depth 1 https://github.com/pyvista/gl-ci-helpers.git
           powershell gl-ci-helpers/appveyor/install_opengl.ps1
 
       - name: Test

.gitignore

@@ -1 +1,4 @@
 dist
+# pixi environments
+.pixi/*
+!.pixi/config.toml