Merge branch 'master' into pypy

Author: altendky

.github/workflows/ci.yml

@@ -17,32 +17,47 @@ jobs:
   test:
     name: ${{ matrix.os.name }} ${{ matrix.python.name }} ${{ matrix.reactor.name }}
     runs-on: ${{ matrix.os.runs-on }}
+    container: ${{ matrix.os.container[matrix.python.docker] }}
     strategy:
       fail-fast: false
       matrix:
         os:
           - name: Linux
             runs-on: ubuntu-latest
+            python_platform: linux
+            container:
+              2.7: docker://python:2.7-buster
+              3.5: docker://python:3.5-buster
+              3.6: docker://python:3.6-buster
+              3.7: docker://python:3.7-buster
+              3.8: docker://python:3.8-buster
           - name: Windows
             runs-on: windows-latest
+            python_platform: win32
           - name: macOS
             runs-on: macos-latest
+            python_platform: darwin
         python:
           - name: CPython 2.7
             tox: py27
             action: 2.7
+            docker: 2.7
           - name: CPython 3.5
             tox: py35
             action: 3.5
+            docker: 3.5
           - name: CPython 3.6
             tox: py36
             action: 3.6
+            docker: 3.6
           - name: CPython 3.7
             tox: py37
             action: 3.7
+            docker: 3.7
           - name: CPython 3.8
             tox: py38
             action: 3.8
+            docker: 3.8
           - name: PyPy 2
             tox: pypy2
             action: pypy2
@@ -52,10 +67,13 @@ jobs:
         reactor:
           - name: default
             tox: default
+            dependencies: default
           - name: Qt5
             tox: qt5
+            dependencies: qt5
           - name: asyncio
             tox: asyncio
+            dependencies: asyncio
         exclude:
           - python:
               tox: py27
@@ -84,6 +102,11 @@ jobs:
         with:
           python-version: ${{ matrix.python.action }}
           architecture: x64
+      - name: Install Linux Qt5 dependencies
+        if: matrix.os.python_platform == 'linux' && matrix.reactor.dependencies == 'qt5'
+        run: |
+          apt-get update --yes
+          apt-get install --yes libgl1
       - name: Install
         run: |
           pip install tox

setup.py

@@ -13,6 +13,7 @@
     author_email="[email protected]",
     url="https://github.com/pytest-dev/pytest-twisted",
     py_modules=["pytest_twisted"],
+    python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*',
     install_requires=["greenlet", "pytest>=2.3", "decorator"],
     extras_require={"dev": ["pre-commit", "black"]},
     classifiers=[