python - pip install test dependencies for tox from setup.py -

i made project setuptools , want test tox. listed dependencies in variable , added setup() parameter (tests_require , extras_require). project needs install of dependencies listed in tests_require test pip install not installing them.

i tried did not work:

install_command = pip install {opts} {packages}[tests] 

how can install test dependencies without having manage multiple dependency lists (i.e. having dependencies listed in both test_requirements.txt , tests_require variable)?

i've achieved committing slight abuse of extra requirements. there trying extras syntax, tests_require deps aren't automatically available way.

with setup.py this:

from setuptools import setup  test_deps = [     'coverage',     'pytest', ] extras = {     'test': test_deps, }  setup(     # other metadata...     tests_require=test_deps,     extras_require=extras, ) 

you can test dependencies installed extras syntax, e.g. project root directory:

$ pip install .[test] 

give same syntax tox in tox.ini, no need adjust default install_command:

[testenv] commands = {posargs:pytest} deps = .[test] 

now don't need maintain dependency list in 2 places, , they're expressed should published package: in packaging metadata instead of requirements.txt files.

it seems little extras hack is not uncommon.