Install Virtualenv 20.30.0 if Poetry version is <2.0.0 (#15)

* Install Virtualenv 20.30.0 if Poetry version is <2.0.0

* Update action.yml

* Update action.yml

Co-authored-by: Gary Snider <[email protected]>

* Update action.yml

* Update action.yml

---------

Co-authored-by: Gary Snider <[email protected]>
Co-authored-by: Uros Bajzelj <[email protected]>

Author: 3 people

action.yml

@@ -48,6 +48,10 @@ runs:
     - name: "Add poetry to PATH"
       run: "ln -s /root/.local/bin/poetry /usr/local/bin/poetry"
       shell: "bash"
+    - name: "Install Virtualenv compatible with Poetry 1.X"
+      if: "startsWith(inputs.poetry-version, '1.')"
+      run: "poetry self add [email protected]"
+      shell: "bash"
     - name: "Log: Check cache"
       run: "echo Checking cache"
       shell: "bash"