CI: add job to smoke-test building and installing

Author: tacaswell

.github/workflows/smoke_test.yml

@@ -0,0 +1,44 @@
+name: smoke test
+
+on:
+  # Runs on pushes targeting the default branch
+  push:
+    branches: ['develop']
+  pull_requests:
+    branches: ['develop']
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+
+# Default to bash
+defaults:
+  run:
+    shell: bash
+
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - name: 'ubuntu-22.04'
+          - name: 'macos-latest'
+          - name: 'windows-latest'
+            cmd_extra: '-win'
+        env: ['py310', 'py311', 'py312', 'py313']
+    runs-on: ${{ matrix.os.name }}
+    steps:
+      # checkout repo
+      - uses: actions/checkout@v2
+
+      # set up pixi
+      - uses: prefix-dev/[email protected]
+        with:
+          environments: ['py310', 'py311', 'py312', 'py313']
+          pixi-version: v0.39.5
+
+      # run install to see if it works
+      - name: Build
+        run: pixi run --manifest-path pixi/pixi.toml   -e ${{ matrix.env }} install${{ matrix.os.cmd_extra }}