Fix bug with the inconsolata font

Underlying bug:

googlefonts/Inconsolata#42

As yet unmerged fix:

NixOS/nixpkgs#136647

This PR can be reverted once this fixed is merged upstream.

config/home.nix

@@ -205,7 +205,7 @@ with pkgs.lib;
   programs.kitty = {
     enable = true;
     font = {
-      package = pkgs.inconsolata;
+      package = pkgs.inconsolata-unstable;
       name = "${config.settings.fontName}";
     };
     settings = {

nixos/configuration.nix

@@ -53,7 +53,7 @@ in
   fonts.fonts = with pkgs; [
     corefonts
     geosanslight
-    inconsolata
+    inconsolata-unstable
     libertine
     libre-baskerville
   ];

pkgs/default.nix

@@ -1,6 +1,7 @@
 (
   self: super: {
     geosanslight = super.callPackage geosanslight/default.nix {};
+    inconsolata-unstable = super.callPackage inconsolata-unstable/default.nix {};
     aws-okta = super.callPackage aws-okta/default.nix {};
   }
 )

pkgs/inconsolata-unstable/default.nix

@@ -0,0 +1,25 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+stdenv.mkDerivation {
+  pname = "inconsolata-unstable";
+  version = "unstable-2021-01-19";
+
+  src = fetchFromGitHub {
+    owner = "google";
+    repo = "fonts";
+    rev = "f113126dc4b9b1473d9354a86129c9d7b837aa1a";
+    sha256 = "0safw5prpa63mqcyfw3gr3a535w4c9hg5ayw5pkppiwil7n3pyxs";
+  };
+
+  installPhase = ''
+    install -m644 --target $out/share/fonts/truetype/inconsolata -D $src/ofl/inconsolata/*.ttf
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.levien.com/type/myfonts/inconsolata.html";
+    description = "A monospace font for both screen and print";
+    maintainers = with maintainers; [ mikoim raskin ];
+    license = licenses.ofl;
+    platforms = platforms.all;
+  };
+}