diff --git a/flake.nix b/flake.nix
index 309cf63..906d785 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,7 +14,7 @@
         };
 
         packages = rec {
-          libgovarnam = pkgs.callPackage ./govarnam/libgovarnam.nix { };
+          libgovarnam = pkgs.callPackage ./govarnam/libgovarnam.nix { selected_schemes = [ "ml" ]; };
           varnam-cli = pkgs.callPackage ./govarnam { inherit libgovarnam; };
           fcitx5-varnam = pkgs.callPackage ./varnam-fcitx5 { inherit libgovarnam; };
         };
diff --git a/govarnam/default.nix b/govarnam/default.nix
index 60497fd..f51231d 100644
--- a/govarnam/default.nix
+++ b/govarnam/default.nix
@@ -1,21 +1,14 @@
 { lib
 , buildGoModule
-, fetchFromGitHub
 , pkg-config
 , libgovarnam
 }:
 
 buildGoModule rec {
   pname = "varnam-cli";
-  version = "1.9.1";
+  version = libgovarnam.version;
 
-  src = fetchFromGitHub {
-    owner = "varnamproject";
-    repo = "govarnam";
-    rev = "v${version}";
-    hash = "sha256-7SYdeOMgc8VBx0rsu6tWGND9mq0Td1VeGmZrpfsWsVE=";
-    fetchSubmodules = true;
-  };
+  src = libgovarnam.src;
 
   vendorHash = "sha256-a7m2THvdi17muJI6p6OVX9cBMcmocYwju29beG2H8CY=";
 
diff --git a/govarnam/libgovarnam.nix b/govarnam/libgovarnam.nix
index 8bea219..60a957f 100644
--- a/govarnam/libgovarnam.nix
+++ b/govarnam/libgovarnam.nix
@@ -1,8 +1,30 @@
 { lib
+, fetchzip
 , buildGoModule
 , fetchFromGitHub
+, selected_schemes ? [ ]
 }:
 
+let
+  schemeShas = import ./schemes.nix;
+  knownSchemes = builtins.attrNames schemeShas;
+  selectedSchemes =
+    if (selected_schemes == [ ])
+    then knownSchemes
+    else
+      let
+        unknown = lib.subtractLists knownSchemes selected_schemes;
+      in
+      if (unknown != [ ])
+      then throw "Unknown scheme(s): ${lib.concatStringsSep " " unknown}"
+      else selected_schemes;
+  schemeSrcs = lib.lists.forEach selectedSchemes (
+    name: (fetchzip {
+      url = schemeShas.${name}.url;
+      sha256 = schemeShas.${name}.sha;
+    })
+  );
+in
 buildGoModule rec {
   pname = "libgovarnam";
   version = "1.9.1";
@@ -47,6 +69,10 @@ buildGoModule rec {
     mkdir -p $out/include/${pname}
     cp *.h $out/include/${pname}/
 
+    mkdir -p $out/share/varnam/schemes
+    echo ${toString (lib.lists.forEach schemeSrcs (scheme: "${scheme}/*.vst"))}
+    cp ${toString (lib.lists.forEach schemeSrcs (scheme: "${scheme}/*.vst"))} $out/share/varnam/schemes/
+
     runHook postInstall
   '';
 
diff --git a/govarnam/schemes.nix b/govarnam/schemes.nix
new file mode 100644
index 0000000..1d5c40c
--- /dev/null
+++ b/govarnam/schemes.nix
@@ -0,0 +1,58 @@
+{
+  "as" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/as.zip";
+    sha = "1skc85kwc4zvrzj7j4jbwnj1kc6662r3cypi1rgp40srmga0wvs5";
+  };
+  "bn" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/bn.zip";
+    sha = "0ywmlhwwmm183g7rm62lfp58qrgk2wiwgxlzzpkp0g5w5n01g86i";
+  };
+  "gu" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/gu.zip";
+    sha = "0wvjgfmyp1pqkvknc0p3x69rb5czry11gddr0spzbq68z9yqalq7";
+  };
+  "hi" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/hi.zip";
+    sha = "09v4ld7xy1xm8qf4hr8m9fmnmzm89rqyjpn7aifp008vaws0pd7y";
+  };
+  "kn" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/kn.zip";
+    sha = "19l9b3hy32sli3c2mll5x9akiy1nczj9m8knf221f2m1wp92i4cx";
+  };
+  "ml-inscript" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/ml-inscript.zip";
+    sha = "0hbr4pyaa6jwxjxxrwih99510q1mb91vph75njmnrcrifs74k186";
+  };
+  "ml" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/ml.zip";
+    sha = "0cj1ca1ynbga3cry9sgwvs0bra3i0bvjp9prg28s4nvj3jk0zdry";
+  };
+  "mr" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/mr.zip";
+    sha = "061hc81n12zbzlp5qcfl4bf4ixv70f80x75igymlps9s8nvjm853";
+  };
+  "ne" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/ne.zip";
+    sha = "0lcdc600cmpkdpb4k1k68wvczz4vidcj25ikzr21ml8jy861pz2m";
+  };
+  "or" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/or.zip";
+    sha = "0ibvm3wsy0z179b3fhdba78riv8h5c47sm8xma0phhr151nmaplz";
+  };
+  "pa" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/pa.zip";
+    sha = "06nxkz2jxd845kya8231qd2m7g9xg9q6bllb78achx09wrigv5wj";
+  };
+  "sa" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/sa.zip";
+    sha = "1lrl23d5rgkb5lnsbdz2cqq14zvi7hi0mkvpsay03fbg97mzghx7";
+  };
+  "ta" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/ta.zip";
+    sha = "0w14qp19b9r36aaq0wl7awdc7w5633j8x3mpx013cr0xqraqwjm1";
+  };
+  "te" = {
+    url = "https://github.com/varnamproject/schemes/releases/download/v1.8.0/te.zip";
+    sha = "0mqllwi0337iwn9jy2s8piqlc9bj7a8rg1ykxfnxmyhh77vs6dax";
+  };
+}
diff --git a/govarnam/update.sh b/govarnam/update.sh
new file mode 100755
index 0000000..e557ed9
--- /dev/null
+++ b/govarnam/update.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash --keep GITHUB_TOKEN -p nix-prefetch jq
+
+set -eo pipefail
+
+curl_args=( '--silent' )
+
+# optionally takes a GITHUB_TOKEN to overcome api rate limiting.
+if [ -n "$GITHUB_TOKEN" ]; then curl_args+=( --header "authorization: Bearer ${GITHUB_TOKEN}" ); fi
+
+# get latest release assets
+curl_args+=( --url https://api.github.com/repos/varnamproject/schemes/releases/latest )
+scheme_archives=$(curl "${curl_args[@]}" | jq -r '.assets' )
+
+dirname="$(dirname "$0")"
+
+printf '{\n' > "$dirname/schemes.nix"
+
+while
+  read -r file_path
+do
+  name="$(basename $file_path)"
+  name="${name/.zip/}"
+  if [ $name != "source-with-lfs" ]; then
+    printf '  "%s" = {\n    url = "%s";\n    sha = "%s";\n  };\n' "${name}" "$file_path" "$(nix-prefetch-url --unpack "$file_path")" >>"$dirname/schemes.nix"
+  fi
+done < <(jq -r '.[].browser_download_url' <<<"$scheme_archives")
+
+printf '}\n' >> "$dirname/schemes.nix"
+