Overhaul makefile and allow universal wheels

- Add makefile tasks for building, checking builds, and simple version
  updates

Signed-off-by: Dan Ryan <dan.ryan@canonical.com>

Makefile

@@ -2,12 +2,36 @@ get_venv_dir:=$(shell mktemp -d 2>/dev/null || mktemp -d -t 'tmpvenv')
 venv_dir := $(get_venv_dir)/pipenv_venv
 venv_file := $(CURDIR)/.test_venv
 get_venv_path =$(file < $(venv_file))
+# This is how we will build tag-specific wheels, e.g. py36 or py37
+PY_VERSIONS:= 2.7 3.5 3.6 3.7 3.8
+# This is how we will build generic wheels, e.g. py2 or py3
+INSTALL_TARGETS := $(addprefix install-py,$(PY_VERSIONS))
+CLEAN_TARGETS := $(addprefix clean-py,$(PY_VERSIONS))
+DATE_STRING := $(shell date +%Y.%m.%d)
+THIS_MONTH_DATE := $(shell date +%Y.%m.01)
+NEXT_MONTH_DATE := $(shell date -d "+1 month" +%Y.%m.01)
+
 
 format:
 	black pipenv/*.py
 test:
 	docker-compose up
 
+.PHONY: install
+install:
+	pip install -e .
+
+install.stamp: install
+	@touch install.stamp
+
+.PHONY: install-py%
+install-py%: install.stamp
+	@echo building for $(addprefix python, $(subst install-py,,$@))
+	PIPENV_PYTHON=$(subst install-py,,$@) pipenv install --dev
+
+install-virtualenvs.stamp: ${INSTALL_TARGETS}
+	@touch install-virtualenvs.stamp
+
 .PHONY: ramdisk
 ramdisk:
 	sudo mkdir -p /mnt/ramdisk
@@ -48,3 +72,46 @@ test-specific: submodules virtualenv test-install
 .PHONY: retest
 retest: virtualenv submodules test-install
 	. $(get_venv_path)/bin/activate && pipenv run pytest -ra -k 'test_check_unused or test_install_editable_git_tag or test_get_vcs_refs or test_skip_requirements_when_pipfile or test_editable_vcs_install or test_basic_vcs_install or test_git_vcs_install or test_ssh_vcs_install or test_vcs_can_use_markers' -vvv --full-trace --tb=long
+
+.PHONY: build
+build: install-virtualenvs.stamp install.stamp
+	PIPENV_PYTHON=3.7 pipenv run python setup.py sdist bdist_wheel
+
+.PHONY: update-version
+update-version:
+	@sed -i "s/^__version__ = .\+$\/__version__ = \"$(DATE_STRING)\"/g" ./pipenv/__version__.py
+
+.PHONY: update-prerelease-version
+update-prerelease-version:
+	@sed -i "s/^__version__ = .\+$\/__version__ = \"$(THIS_MONTH_DATE).a1\"/g" ./pipenv/__version__.py
+
+.PHONY: pre-bump
+pre-bump:
+	@sed -i "s/^__version__ = .\+$\/__version__ = \"$(NEXT_MONTH_DATE).dev0\"/g" ./pipenv/__version__.py
+
+.PHONY: lint
+lint:
+	flake8 .
+
+.PHONY: check
+check: build.stamp
+	pipenv run twine check dist/* && pipenv run check-manifest .
+
+.PHONY: upload-test
+upload-test: build
+	twine upload --repository=testpypi dist/*
+
+.PHONY: clean-py%
+clean-py%:
+	@echo "cleaning environment for $@..."
+	PIPENV_PYTHON="$(subst clean-py,,$@)" pipenv --rm
+
+.PHONY: cleanbuild
+cleanbuild:
+	@echo "cleaning up existing builds..."
+	@rm -rf build/ dist/
+	@rm -rf build.stamp
+
+.PHONY: clean
+clean:
+	rm -rf install.stamp build.stamp install-virtualenvs.stamp

setup.cfg

@@ -65,3 +65,7 @@ norecursedirs =
 filterwarnings =
     ignore::DeprecationWarning
     ignore::PendingDeprecationWarning
+
+[bdist_wheel]
+universal = 1
+zip_safe = true