gnu: python-pillow: Fix build.

* gnu/packages/python.scm (python-pillow)[check-installed]: Add
  installed site-package to PYTHONPATH.

gnu: python-singledispatch: correct inputs.

python-six is only required for conversion, not at run-time

* gnu/packages/python.scm (python-singledispatch, python2-singledispatch):
  [inputs] Move python-six to [native-inputs].

gnu: python-pbr: Rework bootstrapping.

For breaking the cyclic build, formerly a separate (older) version was used
for bootstrapping.  Now we use the same version just without tests and without
test dependencies.

* gnu/packages/python.scm (python-pbr-0.11, python2-pbr-0.11):
  replace by … (python-pbr-minimal, python2-pbr-minimal).
  (python-pbr) inherit from python-pbr-minimal, adding the requirements for
  testing and building the documentation.
  (python-fixtures) [native-inputs] Use python-pbr-minimal here.
  (python-testrepository): [native-inputs] Add it here, it was a missing
  dependency.

gnu: python-testrepositoryfixture: Correct inputs.

python-fixtures is required only for building.

* gnu/packages/python.scm (python-testrepository) [propagated-inputs] move
  python-fixtures to [native-inputs].

gnu: python-fixture: Enable tests.

* gnu/packages/python.scm (python-fixtures) [arguments] remove
  keyword `#:tests?`.

gnu: python-fixture: Correct inputs.

python-pbr is required only for building.

* gnu/packages/python.scm (python-fixtures) [propagated-inputs] move
  python-pbr-0.11 to [native-inputs].

gnu: python-hdf5: Correct inputs.

According to setup.py python-six is requried at run-time, thus has to be a
propagated input.

* gnu/packages/python.scm (python-hdf5) [inputs]: Move `python-six` to
  [propagated-inputs].

gnu: python-h5py: Remove needless "python2-variant" property.

* gnu/packages/python.scm (python-h5py) [python2-variant]: Remove
  property. (python2-h5py): Don't strip property "strip-python2-variant".

gnu: python-ccm: Update synopsis and description.

* gnu/packages/python.scm (python-ccm): Update synopsis and description.

gnu: python-ccm: Add missing input python-psutil.

* gnu/packages/python.scm (python-ccm) [propagated-inouts]: Add
  python-psutil.

gnu: python-sphinx-rtd-theme: Remove inputs.

This package is a plugin for python-sphinx, it does not require python-sphinx
nor docutils, but is an add-on for python-sphinx and should not be installed
by it's own.

* gnu/packages/python/.scm (python-sphinx-rtd-theme)[inputs]: Remove.

gnu: python-pytest-cov: Use upstream options for testing.

* gnu/packages/python.scm (python-pytest-cov): Replace phase "check"
  by one passing the options found in upstream's tox.ini-file
  to "python setup.py check".

gnu: scons: Do not use setuptools for building.

* gnu/packages/python.scm (scons): Set "#:use-setuptools" to #f.

gnu: Fix python inputs, part 7: Ensure python-cython is a native-input.

* gnu/packages/audio.scm (python-pyliblo): [inputs] Move python-cyton to
  [native-inputs].
* gnu/packages/bioinformatics.scm (python2-pybedtools): dito.
* gnu/packages/music.scm (beast, python-pyportmidi): dito.
* gnu/packages/python.scm (python2-fastlmm, python-kivy): dito.

gnu: Fix python inputs, part 6: some inputs become native-inputs.

This patch handles the inputs which are native-inputs almost always like nose,
sphinx, and pytest.

* gnu/packages/python.scm
  (python-jsonschema, python-numpydoc, python-mccabe, python-mistune,
  python-ptyprocess, python-webob, python-apipkg, python-flake8-2.2.4)[inputs]
  change to [native-inputs].
  (python-flake8, tox) Likewise, add a comment.
  (python-scikit-learn, python-numpy)[native-inputs] New element, move
  python-nose here.
  (python2-kombu)[inputs] change to [native-inputs], use python-kombu's
  package-native-inputs.

gnu: Fix python inputs, part 5: some inputs become propagated-inputs

* gnu/packages/openstack.scm
  (python-os-client-config)[inputs] change to
  [native-inputs]. [propagated-inputs]: New element, move python-appdirs,
  python-pyyaml here.
  (python-git-review)[propagated-inputs]: New element, move python-requests
  here.
* gnu/packages/python.scm
  (python-rpy2)[propagated-inputs]: New element, move python-six here.
  (python-xcffib)[inputs] move python-six to [propagated-inputs].
  (python-flake8)[propagated-inputs]: New element, move python-pep8,
  python-pyflakes, python-mccabe here.
  (python-flake8-2.2.4)[propagated-inputs]: New element, move python-pep8,
  python-pyflakes, python-mccabe here.
  (python-pytest)[propagated-inputs]: New element, move python-py here.
  (python-tox)[propagated-inputs]: New element, move all inputs except of
  python-pytest here.
  (python-botocore)[propagated-inputs]: New element, move python-dateutil,
  python-docutils, python-jmespath here.
  (awscli)[propagated-inputs]: New element, move python-colorama,
  python-botocore, python-s3transfer, python-docutils, python-rsa here.
  (python-mako)[propagated-inputs]: New element, move python-markupsafe here.
* gnu/packages/qemu.scm(python-libvirt)[propagated-inputs]: New element, move
  python-lxml here.

gnu: Fix python inputs, part 3: all native-inputs become propagated-inputs.

This patch contains the changes in python.scm where all [native-inputs]
are changed to [propagated-inputs].

* gnu/packages/python.scm.scm (python-feedgenerator): All [native-inputs] are
  changed to [propagated-inputs].

gnu: Fix python inputs, part 2: all inputs become native-inputs.

This patch contains the changes where all [inputs] are changed to
[native-inputs].

* gnu/packages/python.scm (python-pytest, python-fixtures,
  python-testrepository, python-virtualenv): All [inputs] are changed to
  [native-inputs].
* gnu/packages/openstack.scm (python-bandit, python-debtcollector,
  python-hacking, python-tempest-lib, python-oslo.config, python-oslo.context,
  python-oslo.i18n, python-oslo.log, python-oslo.serialization,
  python-oslosphinx, python-oslotest, python-oslo.utils): Likewise.

gnu: Fix python inputs, part 1: all inputs become propagated-inputs.

This patch contains the changes where all [inputs] are changed to
[propagated-inputs]

* gnu/packages/python.scm (python-passlib, python-paramiko, python-ccm,
  python-babel, python-keyring python-pandas, python-tzlocal,
  python-parse-type, python-nose2, python-pytest, python-pytest-mock,
  python-pytest-xdist, python-scripttest, python-testtools, python-pytest-cov,
  python-testscenarios, python-pbr-0.11, python-oauthlib, python-jinja2,
  python-sphinx, python-tzlocal, python-bugz, python2-pytest-mock, behave,
  pelican, sqlalchemy-utils, python-pygridtools, python-urwidtrees,
  python-tornado, python2-tornado, python-debian, python-execnet,
  python-pytest-cache, pytest-localserver, python-clint, python-rply,
  python-hy, python-rauth, python-rsa, python-celery, python-vobject, s3cmd,
  python-prompt-toolkit, ptpython, python-requests-oauthlib, python-stem,
  python-binaryornot, python2-binaryornot, python-nltk, python-pymongo,
  python-schematics, python-url, python2-url, python-freezegun,
  python-glances, python-graphql-core, python-graphql-relay, python-graphene,
  python-nautilus, python-s3transfer): All [inputs] become
  [propagated-inputs].
* gnu/packages/bioinformatics.scm (python-biopython): Likewise.
* gnu/packages/django.scm (pytest-django): Likewise.
* gnu/packages/mail.scm (python-mailmanclient): Likewise.
* gnu/packages/password-utils.scm (python-bcrypt): Likewise.
* gnu/packages/propbuf.scm (python-protobuf): Likewise.
* gnu/packages/rdf.scm (python-rdflib): Likewise.

SQACH all become propagated

gnu: Remove work-arounds for bug 20765 (ensure uncompressed eggs).

Bug 20765 is solved since we build all Python packages using
option "--single-version-externally-managed".

* gnu/packages/bioinformatics.scm (pbtranscript-tofu): Remove
  configure-flags. (pepr): remove phase "disable-egg-generation".
* gnu/packages/pdf.scm (reportlab): Remove configure-flags.
* gnu/packages/python.scm (python-sphinx-rtd-theme, python2-elib.intl,
  python-pkgconfig, python-pytest-pep8, python-pytest-flakes): Remove
  configure-flags. (python-pillow) remove phase
  "disable-egg-generation". (python-libarchive-c) Remove patching
  setup.cfg.
* gnu/packages/statistics.scm (python-patsy): remove phase
  "prevent-generation-of-egg-archive".
* gnu/packages/tls.scm (python-acme): remove phase
  "disable-egg-compression".
* gnu/packages/tor.scm (onionshare): Remove configure-flags.