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-rw-r--r--nixos/modules/misc/documentation.nix8
1 files changed, 8 insertions, 0 deletions
diff --git a/nixos/modules/misc/documentation.nix b/nixos/modules/misc/documentation.nix
index e44a9899772f..ecc40ad6adef 100644
--- a/nixos/modules/misc/documentation.nix
+++ b/nixos/modules/misc/documentation.nix
@@ -357,6 +357,14 @@ in
     (mkIf cfg.nixos.enable {
       system.build.manual = manual;
 
+      system.activationScripts.check-manual-docbook = ''
+        if [[ $(cat ${manual.optionsUsedDocbook}) = 1 ]]; then
+          echo -e "\e[31;1mwarning\e[0m: This configuration contains option documentation in docbook." \
+                  "Support for docbook is deprecated and will be removed after NixOS 23.05." \
+                  "See nix-store --read-log ${builtins.unsafeDiscardStringContext manual.optionsJSON.drvPath}"
+        fi
+      '';
+
       environment.systemPackages = []
         ++ optional cfg.man.enable manual.manpages
         ++ optionals cfg.doc.enable [ manual.manualHTML nixos-help ];