Add basic support for pixi and CI

.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-pixi.yaml

@@ -0,0 +1,27 @@
+name: Run tests with pixi
+
+on:
+  workflow_dispatch:
+  pull_request:
+
+jobs:
+  pixi-test:
+    name: '[pixi:${{ matrix.os }}]'
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [
+          ubuntu-22.04,
+          ubuntu-24.04-arm,
+          macos-latest,
+          windows-2019
+        ]
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up pixi
+      uses: prefix-dev/setup-pixi@v0.8.1
+
+    - name: Build and test the project
+      run: pixi run test

.gitignore

@@ -1,4 +1,3 @@
-.*
 .DS_Store
 *.coverage
 *.egg-info
@@ -32,3 +31,8 @@ doc/html
 ipch
 Debug
 Release
+
+# pixi environments
+.pixi
+*.egg-info
+.build

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.3)
+cmake_minimum_required(VERSION 2.8.3...3.10)
 project(serial)
 
 if(APPLE)