Add conda to ci

.github/workflows/install.yml

@@ -1,11 +1,12 @@
 name: install
+
 on:
   push:
   pull_request:
 
 jobs:
   test:
-    name: test ${{ matrix.py }} - ${{ matrix.os }}
+    name: test ${{ matrix.py }} - ${{ matrix.os }} - ${{ matrix.env }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -17,13 +18,31 @@ jobs:
           - "3.11"
           - "3.10"
           - "3.9"
+        env:
+          - pip
+          - conda
     steps:
-      - name: Setup python for test ${{ matrix.py }}
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Conda or pip
+        if: matrix.env == 'conda'
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          python-version: ${{ matrix.py }}
+          activate-environment: test-env
+          environment-file: environment.yml
+          auto-update-conda: true
+
+      - name: Setup Python for pip
+        if: matrix.env == 'pip'
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.py }}
-      - uses: actions/checkout@v3
+
       - name: Upgrade pip
+        if: matrix.env == 'pip'
         run: python -m pip install -U pip
+
       - name: Install pufferlib
-        run: pip3 install -e . 
+        run: pip install -e .