add pixi tests

Author: AroneyS

.github/workflows/test-galah.yml

@@ -1,4 +1,4 @@
-name: Test Galah with Setup-Miniconda From Marketplace
+name: Test Galah
 on: [push, pull_request]
 
 jobs:
@@ -25,3 +25,64 @@ jobs:
       - name: Run test
         run: |
             cargo test
+
+  pixi_test_dependencies_locked:
+    name: Pixi test_dependencies_locked ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Pixi
+        run: |
+          curl -fsSL https://pixi.sh/install.sh | bash
+          echo "$HOME/.pixi/bin" >> $GITHUB_PATH
+
+      - name: Create dev environment
+        run: |
+          pixi install -e dev
+          pixi run -e dev pixi info
+
+      - name: Show environment info
+        run: |
+          pixi run -e dev pixi list
+
+      - name: Run tests with Pixi
+        run: |
+          pixi run -e dev galah -h
+          pixi run -e dev cargo test
+
+  # Run after removing lock file so dependences are unlocked
+  pixi_test_dependencies_optimistic:
+    name: Pixi test_dependencies_optimistic ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Pixi
+        run: |
+          curl -fsSL https://pixi.sh/install.sh | bash
+          echo "$HOME/.pixi/bin" >> $GITHUB_PATH
+
+      - name: Remove lock file
+        run: |
+          rm -fv pixi.lock
+
+      - name: Create dev environment
+        run: |
+          pixi install -e dev
+          pixi run -e dev pixi info
+
+      - name: Show environment info
+        run: |
+          pixi run -e dev pixi list
+
+      - name: Run tests with Pixi
+        run: |
+          pixi run -e dev galah -h
+          pixi run -e dev cargo test