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[PATCH 3/5] python: add Makefile for some common tasks

From: John Snow
Subject: [PATCH 3/5] python: add Makefile for some common tasks
Date: Tue, 27 Oct 2020 18:38:13 -0400

Add "make venv" to create the pipenv-managed virtual environment that
contains our explicitly pinned dependencies.

Add "make check" to run the python linters [in the host execution

Add "make venv-check" which combines the above two: create/update the
venv, then run the linters in that explicitly managed environment.

make clean: delete miscellaneous build output possibly created by
pipenv, pip, or other python packaging utilities

make distclean: delete the above, and the .venv, too.

Signed-off-by: John Snow <jsnow@redhat.com>
 python/Makefile | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 python/Makefile

diff --git a/python/Makefile b/python/Makefile
new file mode 100644
index 000000000000..51915eaec3bc
--- /dev/null
+++ b/python/Makefile
@@ -0,0 +1,35 @@
+.PHONY: help venv venv-check check clean distclean
+       @echo "python packaging help:"
+       @echo ""
+       @echo "make venv:       Create pipenv's virtual environment."
+       @echo "    NOTE: Requires Python 3.6 and pipenv."
+       @echo "          Will download packages from PyPI."
+       @echo "    HINT: On Fedora: 'sudo dnf install python36 pipenv'"
+       @echo ""
+       @echo "make venv-check: run linters using pipenv's virtual environment."
+       @echo ""
+       @echo "make check:      run linters using the current environment."
+       @echo "    Hint: Install deps with: 'pip install \".[devel]\"'"
+       @echo ""
+       @echo "make clean:      remove build output."
+       @echo ""
+       @echo "make distclean:  remove venv files and everything from 'clean'."
+venv: .venv
+.venv: Pipfile.lock
+       @PIPENV_VENV_IN_PROJECT=1 pipenv sync --dev --keep-outdated
+venv-check: venv
+       @pipenv run make check
+       @pytest
+       rm -rf build/ dist/
+distclean: clean
+       rm -rf qemu.egg.info/ .venv

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