Reinstall virtualenv with tox when requirements.txt or setup.py changes

Question

Previously I was manually using a Makefile that looked something like this:

.PHONY: all
all: tests

.PHONY: tests
tests: py_env
    bash -c \'source py_env/b         


        

Answer 1

Here's the Makefile workaround I ended up going with:

REBUILD_FLAG =

.PHONY: all
all: tests

.PHONY: tests
tests: .venv.touch
    tox $(REBUILD_FLAG)

.venv.touch: setup.py requirements.txt requirements_dev.txt
    $(eval REBUILD_FLAG := --recreate)
    touch .venv.touch

Example:

$ make tests
touch .venv.touch
tox --recreate
[[ SNIP ]]
$ make tests
tox 
[[ SNIP ]]
$ touch requirements.txt
$ make tests
touch .venv.touch
tox --recreate
[[ SNIP ]]