switch to poetry & black

.flake8

@@ -0,0 +1,3 @@
+[flake8]
+max-line-length=240
+ignore=E722,W503

.gitignore

@@ -11,3 +11,4 @@ scm-source.json
 *.bak
 htmlcov/
 .pytest_cache/
+.mypy_cache

.travis.yml

@@ -1,16 +1,13 @@
-dist: xenial
+dist: bionic
 sudo: yes
 language: python
 python:
   - "3.7"
 services:
   - docker
 install:
-  - pip install pipenv
-  - pipenv install --dev
+  - pip install poetry
 script:
   - make test docker
 after_success:
   - coveralls
-env:
-  PIPENV_IGNORE_VIRTUALENVS=1

Dockerfile

@@ -1,23 +1,27 @@
-FROM python:3.7-alpine3.10
-MAINTAINER Henning Jacobs <henning@jacobs1.de>
+FROM python:3.8-slim
 
 WORKDIR /
 
-COPY Pipfile.lock /
-COPY pipenv-install.py /
+RUN pip3 install poetry
 
-RUN /pipenv-install.py && \
-  rm -fr /usr/local/lib/python3.7/site-packages/pip && \
-  rm -fr /usr/local/lib/python3.7/site-packages/setuptools
+COPY poetry.lock /
+COPY pyproject.toml /
 
-FROM python:3.7-alpine3.10
+RUN poetry config virtualenvs.create false && \
+    poetry install --no-interaction --no-dev --no-ansi
+
+FROM python:3.8-slim
 
 WORKDIR /
 
-COPY --from=0 /usr/local/lib/python3.7/site-packages /usr/local/lib/python3.7/site-packages
+# copy pre-built packages to this image
+COPY --from=0 /usr/local/lib/python3.8/site-packages /usr/local/lib/python3.8/site-packages
+
+# now copy the actual code we will execute (poetry install above was just for dependencies)
 COPY kube_downscaler /kube_downscaler
 
 ARG VERSION=dev
+
 RUN sed -i "s/__version__ = .*/__version__ = '${VERSION}'/" /kube_downscaler/__init__.py
 
 ENTRYPOINT ["python3", "-m", "kube_downscaler"]

Makefile

@@ -6,10 +6,16 @@ TAG              ?= $(VERSION)
 
 default: docker
 
-test:
-	pipenv run flake8
-	pipenv run coverage run --source=kube_downscaler -m py.test -v
-	pipenv run coverage report
+.PHONY: install
+install:
+	poetry install
+
+test: install
+	poetry run flake8
+	poetry run black --check kube_downscaler
+	poetry run mypy --ignore-missing-imports kube_downscaler
+	poetry run coverage run --source=kube_downscaler -m py.test -v
+	poetry run coverage report
 
 docker: 
 	docker build --build-arg "VERSION=$(VERSION)" -t "$(IMAGE):$(TAG)" .