diff --git a/pkgs/development/libraries/fontconfig/make-fonts-conf.nix b/pkgs/development/libraries/fontconfig/make-fonts-conf.nix
index cfe0a21e1d35..a03f7446b0ab 100644
--- a/pkgs/development/libraries/fontconfig/make-fonts-conf.nix
+++ b/pkgs/development/libraries/fontconfig/make-fonts-conf.nix
@@ -1,5 +1,11 @@
-{ runCommand, stdenv, lib, libxslt, fontconfig, dejavu_fonts, fontDirectories
-, impureFontDirectories ? [
+{ runCommand, stdenv, lib, libxslt, fontconfig, dejavu_fonts }:
+
+let fontconfig_ = fontconfig; in
+{
+  fontconfig ? fontconfig_
+  # an array of fonts, e.g. `[ pkgs.dejavu_fonts.minimal ]`
+,  fontDirectories
+  , impureFontDirectories ? [
     # nix user profile
     "~/.nix-profile/lib/X11/fonts" "~/.nix-profile/share/fonts"
   ]
@@ -11,7 +17,8 @@
   # darwin paths
   ++ lib.optionals stdenv.isDarwin [ "/Library/Fonts" "/System/Library/Fonts" ]
   # nix default profile
-  ++ [ "/nix/var/nix/profiles/default/lib/X11/fonts" "/nix/var/nix/profiles/default/share/fonts" ] }:
+  ++ [ "/nix/var/nix/profiles/default/lib/X11/fonts" "/nix/var/nix/profiles/default/share/fonts" ]
+}:
 
 runCommand "fonts.conf"
   {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c1fb55c5584c..2fb5c5e564cb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21002,10 +21002,7 @@ with pkgs;
 
   fortify-headers = callPackage ../development/libraries/fortify-headers { };
 
-  makeFontsConf = let fontconfig_ = fontconfig; in {fontconfig ? fontconfig_, fontDirectories}:
-    callPackage ../development/libraries/fontconfig/make-fonts-conf.nix {
-      inherit fontconfig fontDirectories;
-    };
+  makeFontsConf = callPackage ../development/libraries/fontconfig/make-fonts-conf.nix { };
 
   makeFontsCache = let fontconfig_ = fontconfig; in {fontconfig ? fontconfig_, fontDirectories}:
     callPackage ../development/libraries/fontconfig/make-fonts-cache.nix {