fix builds

Author: dmitry-shibanov

.github/workflows/e2e-cache.yml

@@ -50,8 +50,13 @@ jobs:
           python-version: ${{ matrix.python-version }}
           cache: 'pipenv'
       - name: Install dependencies
-        run: pipenv install flake8 --python ${{ matrix.python-version }}
-
+        shell: pwsh
+        run: |
+          if (${{ matrix.python-version }} -Match "pypy") {
+            pipenv install flake8 --python pypy
+          } else {
+            pipenv install flake8 --python ${{ matrix.python-version }}
+          }
   python-pip-dependencies-caching-path:
     name: Test pip (Python ${{ matrix.python-version}}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
@@ -90,4 +95,10 @@ jobs:
           cache: 'pipenv'
           cache-dependency-path: '**/requirements-linux.txt'
       - name: Install dependencies
-        run: pipenv install flake8 --python ${{ matrix.python-version }}
+        shell: pwsh
+        run: |
+          if (${{ matrix.python-version }} -Match "pypy") {
+            pipenv install flake8 --python pypy
+          } else {
+            pipenv install flake8 --python ${{ matrix.python-version }}
+          }