89cba04369
One of the commits included in 3.4.0 [1] broke the patch to update the
path to the glyphs directory [2]. Replace the `postPatch` hook with an
explicit patch to update the paths in the font-patcher script.
[1]: 34a14990b0
[2]: https://github.com/NixOS/nixpkgs/pull/409580#issuecomment-2903671914