[clang-tools-extra] [clang-tools-extra][docs] Do not require myst_parser when building man pages (PR #201138)

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llvmorg-github-actions[bot] wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-tools-extra

Author: David Spickett (DavidSpickett)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/201138.diff


1 Files Affected:

- (modified) clang-tools-extra/docs/conf.py (+12-2) 


``````````diff
diff --git a/clang-tools-extra/docs/conf.py b/clang-tools-extra/docs/conf.py
index b0174894c4e4a..8247cd173fcf6 100644
--- a/clang-tools-extra/docs/conf.py
+++ b/clang-tools-extra/docs/conf.py
@@ -13,7 +13,6 @@
 
 import sys, os
 from datetime import date
-import myst_parser
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -27,7 +26,18 @@
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ["sphinx.ext.todo", "sphinx.ext.mathjax", "myst_parser"]
+extensions = ["sphinx.ext.todo", "sphinx.ext.mathjax"]
+
+# When building man pages, we do not use the markdown pages,
+# So, we can continue without the myst_parser dependencies.
+# Doing so reduces dependencies of some packaged llvm distributions.
+try:
+    import myst_parser
+
+    extensions.append("myst_parser")
+except ImportError:
+    if not tags.has("builder-man"):
+        raise
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ["_templates"]

``````````

</details>


https://github.com/llvm/llvm-project/pull/201138