dina-font: use fonttosfnt instead of fontforge

pkgs/data/fonts/dina/default.nix

@@ -1,22 +1,28 @@
 { lib, stdenv, fetchurl, unzip
-, bdftopcf, mkfontscale, fontforge
+, bdftopcf, mkfontscale, fonttosfnt
 }:
 
 stdenv.mkDerivation {
   pname = "dina-font";
   version = "2.92";
 
+  outputs = [ "out" "bdf" ];
+
   src = fetchurl {
     url = "http://www.donationcoder.com/Software/Jibz/Dina/downloads/Dina.zip";
     sha256 = "1kq86lbxxgik82aywwhawmj80vsbz3hfhdyhicnlv9km7yjvnl8z";
   };
 
   nativeBuildInputs =
-    [ unzip bdftopcf mkfontscale fontforge ];
+    [ unzip bdftopcf mkfontscale fonttosfnt ];
 
-  patchPhase = "sed -i 's/microsoft-cp1252/ISO8859-1/' *.bdf";
+  postPatch = ''
+    sed -i 's/microsoft-cp1252/ISO8859-1/' *.bdf
+  '';
 
   buildPhase = ''
+    runHook preBuild
+
     newName() {
         test "''${1:5:1}" = i && _it=Italic || _it=
         case ''${1:6:3} in
@@ -28,26 +34,26 @@ stdenv.mkDerivation {
         echo "Dina$_weight$_it$_pt"
     }
 
-    # convert bdf fonts to pcf
-    for i in *.bdf; do
-      bdftopcf -t -o $(newName "$i").pcf "$i"
+    for f in *.bdf; do
+        name=$(newName "$f")
+        bdftopcf -t -o "$name.pcf" "$f"
+        fonttosfnt -v -o "$name.otb" "$f"
     done
     gzip -n -9 *.pcf
 
-    # convert bdf fonts to otb
-    for i in *.bdf; do
-      fontforge -lang=ff -c "Open(\"$i\"); Generate(\"$(newName $i).otb\")"
-    done
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
+
     install -D -m 644 -t "$out/share/fonts/misc" *.pcf.gz *.otb
     install -D -m 644 -t "$bdf/share/fonts/misc" *.bdf
     mkfontdir "$out/share/fonts/misc"
     mkfontdir "$bdf/share/fonts/misc"
-  '';
 
-  outputs = [ "out" "bdf" ];
+    runHook postInstall
+  '';
 
   meta = with lib; {
     description = "A monospace bitmap font aimed at programmers";