Try without cask

.github/workflows/test.yml

@@ -20,21 +20,11 @@ jobs:
           - 27.2
           - snapshot
     steps:
-      - name: Install Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: '3.6'
-          architecture: 'x64'
       - uses: purcell/setup-emacs@master
         with:
           version: ${{ matrix.emacs_version }}
-
       - uses: actions/checkout@v2
-      - name: Install Cask
-        uses: conao3/setup-cask@master
-        with:
-          version: 'snapshot'
       - name: Install dependencies
-        run: 'cask install'
+        run: 'git clone https://github.com/emacs-evil/evil'
       - name: Run tests
-        run: 'cask exec emacs -Q -batch -L . -l which-key-tests.el -f ert-run-tests-batch-and-exit'
+        run: 'emacs -Q -batch -L . -L ./evil -l which-key-tests.el -f ert-run-tests-batch-and-exit'