gnu: python2-requests-mock: Disable tests.

* gnu/packages/openstack.scm (python2-requests-mock)[arguments]: New field.
(python-requests-mock): Delay it.

gnu: python2-oslotest: Disable tests.

* gnu/packages/openstack.scm(python2-oslotest)[arguments]: New field.
(python-oslotest)[properties]: Delay it.

gnu: python-fake-factory: Fix build on 32bit.

* gnu/packages/patches/python-fake-factory-fix-build-32bit.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/python.scm (python-fake-factory, python2-fake-factory)[source]:
Use it.

gnu: python-pyicu: Fix build.

* gnu/packages/python.scm (python-pyicu, python2-pyicu)[arguments]: New
field. Add phase to delete locale-dependent test.

gnu: python-scikit-learn: Fix test failure.

* gnu/packages/python.scm (python-scikit-learn,
python2-scikit-learn)[arguments]: Use 'modify-phases'. Move 'check' phase
after 'install' and incorporate 'set-HOME' phase.

gnu: python-scipy: Declare python2-variant.

This is a followup to a50e03014177d2f00b5b85d3e1c295406f842016.

* gnu/packages/python.scm (python-scipy)[properties]: New field.

gnu: python-flake8-polyfill: Enable tests.

* gnu/packages/python.scm (python-flake8-polyfill,
python2-flake8-polyfill)[native-inputs]: Add PYTHON-FLAKE8, PYTHON-MOCK,
PYTHON-PYCODESTYLE and PYTHON-PYTEST. New field.
[arguments]: Replace 'check' phase with custom command.

gnu: python-flask-wtf: Drop failing test.

* gnu/packages/python.scm (python-flask-wtf, python2-flask-wtf)[arguments]:
Add phase to delete file that needs network access.

gnu: python-pbkdf2: Fix tests.

* gnu/packages/python.scm (python-pbkdf2)[arguments]: Replace 'check' phase
with custom command.

gnu: duplicity: Fix tests.

* gnu/packages/backup.scm (duplicity)[native-inputs]: Add PAR2CMDLINE.
[arguments]: Move /bin/sh substitution to 'patch-source' phase and add one file.

gnu: python-sphinx: Propagate python-requests.

* gnu/packages/python.scm (python-sphinx)[native-inputs]: Move PYTHON-REQUESTS
to ...
[propagated-inputs]: ... here.

gnu: python-oslosphinx: Re-enable tests.

* gnu/packages/openstack.scm (python-oslosphinx): Re-enable tests.

gnu: python-oslosphinx: Update to 4.10.0.

* gnu/packages/openstack.scm (python-oslosphinx): Update to 4.10.0.

gnu: python-pbr: Support python-sphinx>=1.2.1.

* gnu/packages/patches/python-pbr-fix-man-page-support.patch: New file.
* gnu/packages/python.scm (python-pbr-minimal): Use the new patch file.

gnu: python-qrcode: Disable tests.

* gnu/packages/python.scm (python-qrcode, python2-qrcode)[arguments]: New field.

gnu: python-sphinx-cloud-sptheme: Explicitly disable tests.

* gnu/packages/python.scm (python-sphinx-cloud-sptheme,
python2-sphinx-cloud-sptheme)[arguments]: New field.

gnu: python-sphinx-repoze-autointerface: Disable tests.

* gnu/packages/python.scm (python-sphinx-repoze-autointerface,
python2-sphinx-repoze-autointerface)[arguments]: New field.

gnu: python-sphinx-rtd-theme: Disable tests.

* gnu/packages/python.scm (python-sphinx-rtd-theme,
python2-sphinx-rtd-theme)[arguments]: New field.

gnu: python-sphinxcontrib-newsfeed: Disable tests.

* gnu/packages/python.scm (python-sphinxcontrib-newsfeed
python2-sphinxcontrib-newsfeed)[arguments]: New field.

gnu: python-sphinxcontrib-programoutput: Disable tests.

* gnu/packages/python.scm (python-sphinxcontrib-programoutput,
python2-sphinxcontrib-programoutput)[arguments]: New field.