PIP_INSTALL = ./.virtualenv/bin/pip install

default: develop

.virtualenv:
	# On sandboxes, we need to use OS-installed packages to avoid pip
	# building them from source, but on production we have so old
	# virtualenv, which doesn't understand --system-site-packages,
	# hence teh kludge below.
	virtualenv --setuptools --system-site-packages .virtualenv || virtualenv --setuptools .virtualenv

install-virtualenv: .virtualenv

develop: install-virtualenv setup.py
	./.virtualenv/bin/python setup.py develop --script-dir=./bin/
	$(PIP_INSTALL) -r requirements.txt