data/fonts: make derivations fixed-outputs (group of fontforge compiled fonts)

1 files changed, 11 insertions, 0 deletions

diff --git a/pkgs/data/fonts/rictydiminished-with-firacode/default.nix b/pkgs/data/fonts/rictydiminished-with-firacode/default.nix
index 074fceeac94..45618972c34 100644
--- a/pkgs/data/fonts/rictydiminished-with-firacode/default.nix
+++ b/pkgs/data/fonts/rictydiminished-with-firacode/default.nix
@@ -11,6 +11,13 @@ stdenv.mkDerivation rec {
   };
 
   buildPhase = ''
+    substituteInPlace apply-feature.py --replace \
+      'ricty = ttLib.TTFont(options.in_font)' \
+      'ricty = ttLib.TTFont(options.in_font, recalcTimestamp=False)'
+    substituteInPlace build-py3.py --replace \
+      'datetime.date.today()' \
+      'datetime.date.fromtimestamp(float(os.environ["SOURCE_DATE_EPOCH"]))'
+
     make
   '';
 
@@ -28,6 +35,10 @@ stdenv.mkDerivation rec {
     ]))
   ];
 
+  outputHashAlgo = "sha256";
+  outputHashMode = "recursive";
+  outputHash = "09ldviapljn4bb1mcxap2pkz7cq3wr2k2qialbnav5y7ii82acd4";
+
   meta = with stdenv.lib; {
     homepage = https://github.com/hakatashi/RictyDiminished-with-FiraCode;
     description = "The best Japanese programming font meets the awesone ligatures of Firacode";