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-rw-r--r--pkgs/data/fonts/xits-math/default.nix8
1 files changed, 8 insertions, 0 deletions
diff --git a/pkgs/data/fonts/xits-math/default.nix b/pkgs/data/fonts/xits-math/default.nix
index c3ba435cbbf9..25431c7f9d70 100644
--- a/pkgs/data/fonts/xits-math/default.nix
+++ b/pkgs/data/fonts/xits-math/default.nix
@@ -15,6 +15,10 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     rm *.otf
+
+    substituteInPlace tools/postprocess.py --replace \
+      'font = ttLib.TTFont(sys.argv[1])' \
+      'font = ttLib.TTFont(sys.argv[1], recalcTimestamp=False)'
   '';
 
   installPhase = ''
@@ -22,6 +26,10 @@ stdenv.mkDerivation rec {
     cp *.otf $out/share/fonts/opentype
   '';
 
+  outputHashAlgo = "sha256";
+  outputHashMode = "recursive";
+  outputHash = "00xycmb9ka67j5s66nkng53y8q6362igisxz04zb58r2717jk50m";
+
   meta = with stdenv.lib; {
     homepage = https://github.com/khaledhosny/xits-math;
     description = "OpenType implementation of STIX fonts with math support";