can't find a working markdown include, i'd have sworn this worked

default.nix

@@ -5,7 +5,6 @@
   shell = pkgs.mkShellNoCC {
     packages = with pkgs; [
       pandoc
-      pandoc-include
       texliveMedium
       librsvg
     ];
@@ -15,7 +14,6 @@
       {
         buildInputs = with pkgs; [
           pandoc
-          pandoc-include
           texliveMedium
           librsvg
         ];
@@ -23,6 +21,6 @@
       ''
         mkdir -p $out
         pandoc ${./architecture.md} -o $out/architecture.pdf
-        pandoc --filter pandoc-include ${./fediversity.md} -o $out/fediversity.pdf
+        pandoc ${./fediversity.md} -o $out/fediversity.pdf
       '';
 }

fediversity.md

@@ -286,9 +286,7 @@ We will integrate that aspect into the high level process on a best effort basis
 
 # Implementation and planning
 
-```include
-architecture.md
-```
+See the split-out architecture document.
 
 ## Work plan and resources