deno per package cache derivations + hashes

flake.nix

@@ -10,16 +10,24 @@
     flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
+        lib = {
+          collectDenoCaches = import ./nix/deno/collect_caches.nix;
+          readDenoScroll = import ./nix/deno/read_scroll.nix;
+        };
         shelf = import ./shelf {
-          inherit pkgs system;
+          inherit pkgs system lib;
         };
       in
         {
-          packages.shelf = shelf;
+          inherit lib;
+
           devShells.default = pkgs.mkShell {
-            buildInputs = [  ];
+            buildInputs = [ pkgs.deno ];
             shellHook = ''
               ${shelf.setupScript}
+
+              echo "Availabe scrolls:"
+              echo ${pkgs.lib.escapeShellArg (builtins.toJSON shelf.scrolls)} | jq .
             '';
           };
         });