Merge pull request #354 from untitaker/packaging-guidelines

Add packaging guidelines

MANIFEST.in

@@ -3,6 +3,8 @@ include CHANGELOG.rst
 include LICENSE
 include config.example
 include Makefile
+include test-requirements.txt
+include docs-requirements.txt
 
 recursive-include docs *
 recursive-include tests *

Makefile

@@ -1,11 +1,4 @@
-# Packagers who want to run the testsuite against an installed vdirsyncer:
-#
-# - Create a virtualenv
-# - Somehow link your installation of vdirsyncer into the virtualenv, e.g. by
-#   using --system-site-packages when creating the virtualenv
-# - Inside the virtualenv: `make install-test test`
-#
-# The `install-test` target requires internet access.
+# See the documentation on how to run the tests.
 
 export DAV_SERVER := skip
 export REMOTESTORAGE_SERVER := skip
@@ -13,6 +6,7 @@ export RADICALE_BACKEND := filesystem
 export REQUIREMENTS := release
 export TESTSERVER_BASE := ./tests/storage/servers/
 export TRAVIS := false
+export DETERMINISTIC_TESTS := false
 
 install-servers:
 	set -ex; \
@@ -28,14 +22,12 @@ install-servers:
 
 install-test: install-servers
 	(python --version | grep -vq 'Python 3.3') || pip install enum34
+	pip install -r test-requirements.txt
 	set -xe && if [ "$$REQUIREMENTS" = "devel" ]; then \
 		pip install -U --force-reinstall \
 			git+https://github.com/DRMacIver/hypothesis \
 			git+https://github.com/pytest-dev/pytest; \
-	else \
-		pip install pytest hypothesis; \
 	fi
-	pip install pytest-xprocess pytest-localserver pytest-subtesthack
 	[ $(TRAVIS) != "true" ] || pip install coverage codecov
 
 test:
@@ -62,7 +54,7 @@ travis-conf:
 	python3 scripts/make_travisconf.py > .travis.yml
 
 install-docs:
-	pip install sphinx sphinx_rtd_theme
+	pip install -r docs-requirements.txt
 
 docs:
 	cd docs && make html
@@ -88,7 +80,7 @@ install-dev:
 	set -xe && if [ "$$REQUIREMENTS" = "devel" ]; then \
 	    pip install -U --force-reinstall git+https://github.com/kennethreitz/requests; \
 	elif [ "$$REQUIREMENTS" = "minimal" ]; then \
-		pip install -U --force-reinstall lxml==3.1 requests==2.4.1 requests_toolbelt==0.4.0 click==5.0; \
+		pip install -U --force-reinstall $$(python setup.py --quiet minimal_requirements); \
 	fi
 
 .PHONY: docs

docs-requirements.txt

@@ -0,0 +1,2 @@
+sphinx
+sphinx_rtd_theme

docs/index.rst

@@ -29,6 +29,7 @@ Table of Contents
    problems
    vdir
    contributing
+   packaging
    contact
    changelog
    license

docs/packaging.rst

@@ -0,0 +1,65 @@
+====================
+Packaging guidelines
+====================
+
+Thank you very much for packaging vdirsyncer! The following guidelines should
+help you to avoid some common pitfalls.
+
+While they are called guidelines and therefore theoretically not mandatory, if
+you consider going a different direction, please first open an issue or contact
+me otherwise instead of just going ahead. These guidelines exist for my own
+convenience too.
+
+Obtaining the source code
+=========================
+
+The main distribution channel is `PyPI
+<https://pypi.python.org/pypi/vdirsyncer>`_, and source tarballs can be
+obtained there. Do not use the ones from GitHub: Their tarballs contain useless
+junk and are more of a distraction than anything else.
+
+I give each release a tag in the git repo. If you want to get notified of new
+releases, `GitHub's feed
+<https://github.com/untitaker/vdirsyncer/releases.atom>`_ is a good way.
+
+Dependency versions
+===================
+
+It is strongly discouraged to package vdirsyncer as a Python 2 application.
+Future releases will only work on Python 3.3 and newer versions.
+
+As with most Python packages, ``setup.py`` denotes the runtime dependencies of
+vdirsyncer. It also contains lower-bound versions of each dependency. Older
+versions will be rejected by the testsuite.
+
+Testing
+=======
+
+Everything testing-related goes through the ``Makefile`` in the root of the
+repository or PyPI package. Trying to e.g. run ``py.test`` directly will
+require a lot of environment variables to be set (for configuration) and you
+probably don't want to deal with that.
+
+You can install the testing dependencies with ``make test-install``. You
+probably don't want this since it will use pip to download the dependencies.
+Alternatively you can find the testing dependencies in
+``test-requirements.txt``, again with lower-bound version requirements.
+
+You also have to have vdirsyncer fully installed at this point. Merely
+``cd``-ing into the tarball will not be sufficient.
+
+Running the tests happens with ``make test``.
+
+Hypothesis will randomly generate test input. If you care about deterministic
+tests, set the ``DETERMINISTIC_TESTS`` variable to ``"true"``::
+
+    make DETERMINISTIC_TESTS=true test
+
+Documentation
+=============
+
+You can find a list of dependencies in ``docs-requirements.txt``.
+
+Change into the ``docs/`` directory and build whatever format you want. That
+said, I only take care of the HTML docs' formatting -- other targets (such as
+the generated manpage) may look like garbage.

setup.py

@@ -12,9 +12,48 @@ Vdirsyncer is a synchronization tool for vdir. See the README for more details.
 
 import platform
 
-from setuptools import find_packages, setup
+from setuptools import Command, find_packages, setup
 
 
+requirements = [
+    # https://github.com/mitsuhiko/click/issues/200
+    'click>=5.0',
+    'click-log>=0.1.3',
+    'click-threading>=0.1.2',
+    # https://github.com/kennethreitz/requests/issues/2930
+    'requests >=2.0.1, !=2.9.0',
+    'lxml >=3.1' + (
+        # See https://github.com/untitaker/vdirsyncer/issues/298
+        # We pin some LXML version that is known to work with PyPy
+        # I assume nobody actually uses PyPy with vdirsyncer, so this is
+        # moot
+        ', <=3.4.4'
+        if platform.python_implementation() == 'PyPy'
+        else ''
+    ),
+    # https://github.com/sigmavirus24/requests-toolbelt/pull/28
+    'requests_toolbelt >=0.3.0',
+    # https://github.com/untitaker/python-atomicwrites/commit/4d12f23227b6a944ab1d99c507a69fdbc7c9ed6d  # noqa
+    'atomicwrites>=0.1.7'
+]
+
+
+class PrintRequirements(Command):
+
+    description = 'Prints minimal requirements'
+
+    user_options = []
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        for requirement in requirements:
+            print(requirement.replace(">", "=").replace(" ", ""))
+
 setup(
     name='vdirsyncer',
     use_scm_version={
@@ -32,27 +71,11 @@ setup(
     entry_points={
         'console_scripts': ['vdirsyncer = vdirsyncer.cli:main']
     },
-    install_requires=[
-        # https://github.com/mitsuhiko/click/issues/200
-        'click>=5.0',
-        'click-log',
-        'click-threading',
-        # https://github.com/kennethreitz/requests/issues/2930
-        'requests !=2.9.0',
-        'lxml >=3.1' + (
-            # See https://github.com/untitaker/vdirsyncer/issues/298
-            # We pin some LXML version that is known to work with PyPy
-            # I assume nobody actually uses PyPy with vdirsyncer, so this is
-            # moot
-            ', <=3.4.4'
-            if platform.python_implementation() == 'PyPy'
-            else ''
-        ),
-        # https://github.com/sigmavirus24/requests-toolbelt/pull/28
-        'requests_toolbelt >=0.5.0',
-        'atomicwrites'
-    ],
+    install_requires=requirements,
     extras_require={
         'remotestorage': ['requests-oauthlib']
+    },
+    cmdclass={
+        'minimal_requirements': PrintRequirements
     }
 )

test-requirements.txt

@@ -0,0 +1,5 @@
+hypothesis>=3
+pytest
+pytest-localserver
+pytest-subtesthack
+pytest-xprocess

tests/cli/test_main.py

@@ -8,12 +8,22 @@ from click.testing import CliRunner
 from hypothesis import example, given
 import hypothesis.strategies as st
 
+from pkg_resources import load_entry_point
+
 import pytest
 
 import vdirsyncer.cli as cli
 from vdirsyncer.utils.compat import PY2, to_native
 
 
+def test_entry_points(monkeypatch, capsys):
+    monkeypatch.setattr('sys.argv', ['--help'])
+    with pytest.raises(SystemExit) as excinfo:
+        load_entry_point('vdirsyncer', 'console_scripts', 'vdirsyncer')()
+
+    assert excinfo.value.code == 0
+
+
 def test_simple_run(tmpdir, runner):
     runner.write_with_general(dedent('''
     [pair my_pair]

tests/conftest.py

@@ -3,9 +3,12 @@
 General-purpose fixtures for vdirsyncer's testsuite.
 '''
 import logging
+import os
 
 import click_log
 
+from hypothesis import Verbosity, settings
+
 import pytest
 
 
@@ -27,3 +30,16 @@ except ImportError:
         return lambda x: x()
 else:
     del pytest_benchmark
+
+settings.register_profile("ci", settings(
+    max_examples=1000,
+    verbosity=Verbosity.verbose,
+))
+settings.register_profile("deterministic", settings(
+    derandomize=True,
+))
+
+if os.getenv('DETERMINISTIC_TESTS').lower == 'true':
+    settings.load_profile("deterministic")
+elif os.getenv('TRAVIS').lower == 'true':
+    settings.load_profile("ci")