Fix CI: Disable sphinxcontrib_robotframework until upstream fixed.

Disable source checkout of sphinxcontrib_robotframework due to an error
with "--install-option='--pre'" in requirement files and recent pip
versions.

As soon this is fixed upstream we can re-enable it.

Ref:

- mxstack/mxdev#30
- collective/sphinxcontrib-robotframework#6

docs/conf.py

@@ -3,18 +3,23 @@
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = [
-    "sphinxcontrib_robotframework",
-]
-
-# Enable Robot Framework tests during Sphinx compilation.
-sphinxcontrib_robotframework_enabled = True
-sphinxcontrib_robotframework_quiet = True
 
-# Configure Robot Frameowrk tests to use Chrome
-sphinxcontrib_robotframework_variables = {
-    "BROWSER": "chrome"
-}
+# TODO: re-enable sphinxcontrib_robotframework when one of the following is
+# merged and released:
+# - https://github.com/collective/sphinxcontrib-robotframework/pull/6
+# - https://github.com/mxstack/mxdev/pull/30
+# extensions = [
+#     "sphinxcontrib_robotframework",
+# ]
+#
+# # Enable Robot Framework tests during Sphinx compilation.
+# sphinxcontrib_robotframework_enabled = True
+# sphinxcontrib_robotframework_quiet = True
+#
+# # Configure Robot Frameowrk tests to use Chrome
+# sphinxcontrib_robotframework_variables = {
+#     "BROWSER": "chrome"
+# }
 
 # The suffix of source filenames.
 source_suffix = '.rst'

mx.ini

@@ -15,8 +15,8 @@ ignores =
     setuptools
     pip
     wheel
-    sphinxcontrib-robotframework
     plone.app.mosaic
+#    sphinxcontrib-robotframework
 
 version-overrides =
     plone.staticresources==2.1.0
@@ -55,6 +55,6 @@ github = git+https://github.com
 # url = ${settings:github}/plone/plone.tiles.git
 # branch = master
 
-[sphinxcontrib-robotframework]
-url = ${settings:github}/cilq/sphinxcontrib-robotframework.git
-branch = fix_codeblock
+# [sphinxcontrib-robotframework]
+# url = ${settings:github}/cilq/sphinxcontrib-robotframework.git
+# branch = fix_codeblock

setup.py

@@ -31,7 +31,11 @@
         "docs": [
             "Sphinx",
             "sphinx-rtd-theme",
-            "sphinxcontrib-robotframework",
+            # TODO: re-enable sphinxcontrib_robotframework when one of the
+            # following is merged and released:
+            # - https://github.com/collective/sphinxcontrib-robotframework/pull/6
+            # - https://github.com/mxstack/mxdev/pull/30
+            # "sphinxcontrib-robotframework",
         ],
     },
     entry_points="""