Problem: No tests running with Debian system python

Solution: Add a job

.github/workflows/Dockerfile-debian-system

+FROM debian:stable-slim as debian-python
+RUN apt-get update
+RUN apt-get install -y gcc python3-dev python3-certifi
+RUN mkdir buildout
+WORKDIR /buildout
+FROM debian-python
+ARG PYTHON_VER
+COPY doc /buildout/doc
+COPY src /buildout/src
+COPY zc.recipe.egg_ /buildout/zc.recipe.egg_
+COPY setup.* dev.py *.rst *.txt buildout.cfg .coveragerc /buildout/
+RUN python3 dev.py

.travis.yml

@@ -17,6 +17,8 @@ jobs:
     - language: python
       python: 3.8
       env: BUILD_TYPE=bare_machines
+    - language: minimal
+      env: BUILD_TYPE=debian_sys_container
     - language: minimal
       env: PYTHON_VER=2.7 BUILD_TYPE=centos_containers
     - language: minimal

Makefile

@@ -45,7 +45,7 @@ PYTHON_DOWNLOAD = $(PYTHON_BUILD_DIR)/$(PYTHON_ARCHIVE).tgz
 BUILD_DIRS = $(PYTHON_PATH) bin build develop-eggs eggs parts
 
 all: all_test
-.PHONY: all download_python python build test coverage docker docker_deb all_pythons all_test all_coverage
+.PHONY: all download_python python build test coverage docker docker_deb docker_deb_sys all_pythons all_test all_coverage
 
 # setup python from source
 $(PYTHON_DOWNLOAD):
@@ -134,5 +134,9 @@ docker_deb:
 	docker build -f .github/workflows/Dockerfile-debian --tag debian_buildout:python${PYTHON_VER} --build-arg PYTHON_VER=${PYTHON_VER} .
 	docker run debian_buildout:python${PYTHON_VER} /bin/bash -c 'RUN_COVERAGE= COVERAGE_REPORT= /buildout/bin/test -c -vvv -t abi'
 
+docker_deb_sys:
+	docker build -f .github/workflows/Dockerfile-debian-system --tag debian_system_buildout .
+	docker run debian_system_buildout /bin/bash -c 'RUN_COVERAGE= COVERAGE_REPORT= /buildout/bin/test -c -vvv -t abi'
+
 clean:
 	rm -rf $(VENVS) $(PYTHON_BUILD_DIR) $(HERE)/pythons

builds/debian_sys_container/ci_build.sh

+#!/bin/bash
+
+set -x
+set -e
+
+cd ../..
+docker build -f .github/workflows/Dockerfile-debian-system --tag debian_system_buildout .
+docker run debian_system_buildout /bin/bash -c 'RUN_COVERAGE= COVERAGE_REPORT= /buildout/bin/test -c -vvv'