barlow: use installFonts hook

pkgs/by-name/ba/barlow/package.nix

@@ -2,30 +2,26 @@
   lib,
   stdenvNoCC,
   fetchFromGitHub,
+  installFonts,
 }:
 
-stdenvNoCC.mkDerivation rec {
+stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "barlow";
   version = "1.422";
 
+  outputs = [
+    "out"
+    "webfont"
+  ];
+
   src = fetchFromGitHub {
     owner = "jpt";
     repo = "barlow";
-    tag = version;
+    tag = finalAttrs.version;
     hash = "sha256-FG68o6qN/296RhSNDHFXYXbkhlXSZJgGhVjzlJqsksY=";
   };
 
-  installPhase = ''
-    runHook preInstall
-
-    install -Dm644 fonts/otf/*.otf -t $out/share/fonts/opentype
-    install -Dm644 fonts/ttf/*.ttf fonts/gx/*.ttf -t $out/share/fonts/truetype
-    install -Dm644 fonts/eot/*.eot -t $out/share/fonts/eot
-    install -Dm644 fonts/woff/*.woff -t $out/share/fonts/woff
-    install -Dm644 fonts/woff2/*.woff2 -t $out/share/fonts/woff2
-
-    runHook postInstall
-  '';
+  nativeBuildInputs = [ installFonts ];
 
   meta = {
     description = "Grotesk variable font superfamily";
@@ -34,4 +30,4 @@ stdenvNoCC.mkDerivation rec {
     maintainers = [ ];
     platforms = lib.platforms.all;
   };
-}
+})