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Make alabaster and sphinx_rtd_theme dependencies optional

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There is no need to pull these dependencies if i.e. the documentation is
using the classic theme.

There will be no change in behavior for projects using alabaster or
sphinx_rtd_theme.
This commit is contained in:
Dmitry Shachnev 2015-10-24 19:18:40 +03:00
parent 0329edc510
commit 32591a7f77
1 changed files with 2 additions and 3 deletions
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5
sphinx/theming.py
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@ -26,9 +26,6 @@ except ImportError:
from sphinx import package_dir from sphinx import package_dir
from sphinx.errors import ThemeError from sphinx.errors import ThemeError
import alabaster
import sphinx_rtd_theme
NODEFAULT = object() NODEFAULT = object()
THEMECONF = 'theme.conf' THEMECONF = 'theme.conf'
@ -73,10 +70,12 @@ class Theme(object):
def load_extra_theme(cls, name): def load_extra_theme(cls, name):
if name in ('alabaster', 'sphinx_rtd_theme'): if name in ('alabaster', 'sphinx_rtd_theme'):
if name == 'alabaster': if name == 'alabaster':
import alabaster
themedir = alabaster.get_path() themedir = alabaster.get_path()
# alabaster theme also requires 'alabaster' extension, it will be loaded # alabaster theme also requires 'alabaster' extension, it will be loaded
# at sphinx.application module. # at sphinx.application module.
elif name == 'sphinx_rtd_theme': elif name == 'sphinx_rtd_theme':
import sphinx_rtd_theme
themedir = sphinx_rtd_theme.get_html_theme_path() themedir = sphinx_rtd_theme.get_html_theme_path()
else: else:
raise NotImplementedError('Programming Error') raise NotImplementedError('Programming Error')