Fix setup error when using pip 10

[nikitavbv]

This changes setup.py, so it does not rely on pip internals to
form the list of install requires.

[gutierri]

@nikitavbv Great ... but what do you think of this approach here:

diff --git a/requirements-test.txt b/requirements-test.txt
index 700db9b..9ede2ac 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,5 +1,3 @@
--r requirements.txt
--e .
 pytest
 pytest-cov
 pytest-sugar
diff --git a/setup.py b/setup.py
index 125164c..2be25d4 100644
--- a/setup.py
+++ b/setup.py
@@ -4,8 +4,6 @@ from setuptools import setup, find_packages
 
 import sys, os
 
-import pip
-
 from setuptools import setup, find_packages, dist
 from setuptools.command.test import test as TestCommand
 from distutils.core import Command
@@ -120,16 +118,9 @@ requirements_links = []
 def requirements(spec=None):
	 spec = '{}{}.txt'.format('requirements',
			 '-'+spec if spec else '')
-    requires = []
-
-    requirements = pip.req.parse_requirements(
-        spec, session=pip.download.PipSession())
 
-    for item in requirements:
-        if getattr(item, 'link', None):
-            requirements_links.append(str(item.link))
-        if item.req:
-            requires.append(str(item.req))
+    with open(spec, 'r') as requirements_txt:
+        requires = requirements_txt.read().splitlines()
 
	 return requires
 

Also, it might be interesting to move tests_required to an extra_required (e.g. pip install -e. [tests]). What do you think @guyzmo ?

[guyzmo]

what would be the advantage of switching the tests_required to extra_required? 🤔

[gutierri]

/extra_require/¹ allows installation of test-related dependencies independently, unlike /tests_require/² which is invoked when the test command is called. The change here would happen in how to install dependencies, for example: on setup.py: extras_require={     "test'":  ["pytest"] } |$ pip install -e. [test]| Even the integration with tox would be simpler, as we could leave the dependencies (replacing requirements-test.txt) in setup.py and call them in "deps" in tox.ini: deps =     . [test] [1] - https://setuptools.readthedocs.io/en/latest/setuptools.html#declaring-extras-optional-features-with-their-own-dependencies [2] - https://setuptools.readthedocs.io/en/latest/setuptools.html?highlight=tests_require#developer-s-guide |

…

On 8/26/19 1:09 PM, guyzmo wrote: what would be the advantage of switching the |tests_required| to |extra_required|? 🤔 — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#191?email_source=notifications&email_token=AAIPKPHMHC6HPG2ONSJC4QTQGP54FA5CNFSM4FIP3BNKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD5E24RY#issuecomment-524922439>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIPKPFT2NGERP4WVS3N4ZLQGP54FANCNFSM4FIP3BNA>.