use smc-chilanka from nixpkgs

extra-packages/smc-manjari/default.nix

@@ -1,36 +0,0 @@
-{ lib, stdenvNoCC, fetchurl, truetype ? false }:
-
-stdenvNoCC.mkDerivation rec {
-  pname = "smc-manjari";
-  version = "2.200";
-
-  src = fetchurl {
-    url = "https://gitlab.com/api/v4/projects/490109/jobs/artifacts/Version${version}/raw/build/manjari-Version${version}.tar.gz?job=build-tag";
-    hash = "sha256-3DyR5RCMPkjjNn3WmwAwE8sernFJiYoqtZ35otuyVWo=";
-  };
-
-  unpackPhase = ''
-    tar xzf $src
-  '';
-
-  installPhase = ''
-    runHook preInstall
-
-    install -Dm444 -t $out/share/fonts/opentype otf/*.otf
-    ${lib.optionalString truetype "install -Dm444 -t $out/share/fonts/truetype ttf/*.ttf"}
-
-    install -Dm644 -t $out/etc/fonts/conf.d *.conf
-
-    install -Dm644 -t $out/share/doc/${pname}-${version} OFL.txt
-
-    runHook postInstall
-  '';
-
-  meta = with lib; {
-    homepage = "https://smc.org.in/fonts/manjari";
-    description = "Manjari Malayalam Typeface";
-    license = licenses.ofl;
-    platforms = platforms.all;
-    maintainers = with maintainers; [ adtya ];
-  };
-}

hosts/skipper/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, extra-packages, ... }: {
+{ pkgs, ... }: {
   imports = [
     ./hardware
     ./programs
@@ -17,14 +17,13 @@
 
   fonts = {
     fontDir.enable = true;
-    packages = (with pkgs; [
+    packages = with pkgs; [
       cantarell-fonts
-      liberation_ttf
       (nerdfonts.override { fonts = [ "FiraCode" ]; })
-      noto-fonts
       noto-fonts-cjk
       noto-fonts-emoji
-    ]) ++ [ extra-packages.smc-manjari ];
+      smc-chilanka
+    ];
   };
 
   gtk.iconCache.enable = true;