diff --git a/flake.nix b/flake.nix
index 08dc7f2..484e488 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,15 +5,22 @@
     let
       tagsPath = ./tags.nix;
       libPath = ./lib.nix;
+      pkgsLibPath = ./pkgs-lib.nix;
 
       lib = import libPath;
     in
     {
       lib = {
-        inherit tagsPath libPath;
+        inherit tagsPath libPath pkgsLibPath;
 
         tags = import tagsPath { format = true; inherit lib; };
         core = lib;
       };
+
+      overlays = {
+        pkgsLib = (final: prev: {
+          htmlNix = import pkgsLibPath { inherit lib; pkgs = prev; };
+        });
+      };
     };
 }
diff --git a/pkgs-lib.nix b/pkgs-lib.nix
new file mode 100644
index 0000000..e526707
--- /dev/null
+++ b/pkgs-lib.nix
@@ -0,0 +1,8 @@
+{ lib ? import ./lib.nix, pkgs }:
+let pkgBin = name: "${pkgs.${name}}/bin/${name}"; in
+{
+  mkServePathScript = path: pkgs.writeScriptBin "serve" { } ''
+    #!${pkgBin "bash"}
+    ${pkgBin "miniserve"} --index index.html ${path}
+  '';
+}