chore: add proper package manager

Author: codebestia

.github/workflows/ci.yml

@@ -21,20 +21,31 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
+    - name: Install Poetry
+      uses: snok/install-poetry@v1
+      with:
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+
+    - name: Load cached venv
+      id: cached-poetry-dependencies
+      uses: actions/cache@v3
+      with:
+        path: .venv
+        key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
+
     - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install pytest flake8
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        pip install -e .
+      if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+      run: poetry install --no-interaction --no-root
+
+    - name: Install library
+      run: poetry install --no-interaction
 
     - name: Lint with flake8
       run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+        poetry run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        poetry run flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
 
     - name: Test with pytest
       run: |
-        pytest
+        poetry run pytest