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-rw-r--r--nixos/doc/manual/development/option-declarations.section.md9
1 files changed, 8 insertions, 1 deletions
diff --git a/nixos/doc/manual/development/option-declarations.section.md b/nixos/doc/manual/development/option-declarations.section.md
index ef7255557a10..79914f2cb6ca 100644
--- a/nixos/doc/manual/development/option-declarations.section.md
+++ b/nixos/doc/manual/development/option-declarations.section.md
@@ -56,7 +56,14 @@ The function `mkOption` accepts the following arguments.
`description`
: A textual description of the option, in DocBook format, that will be
- included in the NixOS manual.
+ included in the NixOS manual. During the migration process from DocBook
+ to CommonMark the description may also be written in CommonMark, but has
+ to be wrapped in `lib.mdDoc` to differentiate it from DocBook. See
+ the nixpkgs manual for [the list of CommonMark extensions](
+ https://nixos.org/nixpkgs/manual/#sec-contributing-markup)
+ supported by NixOS documentation.
+
+ New documentation should preferably be written as CommonMark.
## Utility functions for common option patterns {#sec-option-declarations-util}