[clang] [flang] [llvm] [Docs] Allow building man pages without myst_parser (PR #82402)

[Michał Górny via cfe-commits]

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@@ -35,8 +35,16 @@
 
 import sphinx
 
-if sphinx.version_info >= (3, 0):
-    extensions.append("myst_parser")
+# 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
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mgorny wrote:

I think you're using different indentation (2 spaces) vs other code in that file (4 spaces).

https://github.com/llvm/llvm-project/pull/82402