From 56ce016024f6c7a4f953aa8dfd4b4a3feda99371 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Samuel=20Gr=C3=A4fenstein?= <git@samuelgrf.com>
Date: Mon, 13 Jul 2020 12:17:14 +0200
Subject: [PATCH] nerdfonts: disable Windows font variants

The only difference between these and the regular fonts is that
the internal font name is limited to 31 characters. They double
the package closure size.
---
 pkgs/data/fonts/nerdfonts/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/data/fonts/nerdfonts/default.nix b/pkgs/data/fonts/nerdfonts/default.nix
index 35f43c14df48..bf98effb1508 100644
--- a/pkgs/data/fonts/nerdfonts/default.nix
+++ b/pkgs/data/fonts/nerdfonts/default.nix
@@ -5,6 +5,9 @@
 # To select only certain fonts, put a list of strings to `fonts`: every key in
 # ./shas.nix is an optional font
 , fonts ? []
+# Whether to enable Windows font variants, their internal font name is limited
+# to 31 characters
+, enableWindowsFonts ? false
 }:
 
 let
@@ -50,6 +53,10 @@ stdenv.mkDerivation rec {
   installPhase = ''
     find -name \*.otf -exec mkdir -p $out/share/fonts/opentype/NerdFonts \; -exec mv {} $out/share/fonts/opentype/NerdFonts \;
     find -name \*.ttf -exec mkdir -p $out/share/fonts/truetype/NerdFonts \; -exec mv {} $out/share/fonts/truetype/NerdFonts \;
+    ${lib.optionalString (! enableWindowsFonts) ''
+      rm -rfv $out/share/fonts/opentype/NerdFonts/*Windows\ Compatible.*
+      rm -rfv $out/share/fonts/truetype/NerdFonts/*Windows\ Compatible.*
+    ''}
   '';
 
   meta = with stdenv.lib; {