more patches

common/optional/x86-64-v3/patches/afdko/default.nix

@@ -0,0 +1,10 @@
+{ afdko }:
+afdko.overridePythonAttrs (old: {
+  # FMA changes overlap-removal coordinates by 0.01 units on x86-64-v3.
+  # Separate multiply/add rounding reproduces the reference Type 1 font exactly.
+  env = (old.env or { }) // {
+    NIX_CFLAGS_COMPILE = (old.env.NIX_CFLAGS_COMPILE or "") + " -ffp-contract=off";
+  };
+
+  patches = (old.patches or [ ]) ++ [ ./check-overlap-font-content.patch ];
+})