feat: serve path script, pkgs lib overlay

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; };
+        });
+      };
     };
 }

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}
+  '';
+}