doc: Render lib.fixedPoints

doc/doc-support/lib-function-docs.nix

@@ -14,13 +14,16 @@ stdenv.mkDerivation {
   buildInputs = [ nixdoc ];
   installPhase = ''
     function docgen {
-      # TODO: wrap lib.$1 in <literal>, make nixdoc not escape it
-      if [[ -e "../lib/$1.nix" ]]; then
-        nixdoc -c "$1" -d "lib.$1: $2" -l ${locationsJSON} -f "$1.nix" > "$out/$1.md"
+      name=$1
+      baseName=$2
+      description=$3
+      # TODO: wrap lib.$name in <literal>, make nixdoc not escape it
+      if [[ -e "../lib/$baseName.nix" ]]; then
+        nixdoc -c "$name" -d "lib.$name: $description" -l ${locationsJSON} -f "$baseName.nix" > "$out/$name.md"
       else
-        nixdoc -c "$1" -d "lib.$1: $2" -l ${locationsJSON} -f "$1/default.nix" > "$out/$1.md"
+        nixdoc -c "$name" -d "lib.$name: $description" -l ${locationsJSON} -f "$baseName/default.nix" > "$out/$name.md"
       fi
-      echo "$out/$1.md" >> "$out/index.md"
+      echo "$out/$name.md" >> "$out/index.md"
     }
 
     mkdir -p "$out"
@@ -29,8 +32,8 @@ stdenv.mkDerivation {
     ```{=include=} sections
     EOF
 
-    ${lib.concatMapStrings ({ name, description }: ''
-      docgen ${name} ${lib.escapeShellArg description}
+    ${lib.concatMapStrings ({ name, baseName ? name, description }: ''
+      docgen ${name} ${baseName} ${lib.escapeShellArg description}
     '') libsets}
 
     echo '```' >> "$out/index.md"