Implemented basic, deno KV backed, file service.

flake.nix

@@ -0,0 +1,19 @@
+{
+  description = "A very basic flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, }: 
+    flake-utils.lib.eachDefaultSystem (system:
+      let 
+        pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        devShells.default = pkgs.mkShell { 
+           buildInputs = with pkgs; [deno
+                                     psrecord];
+        };
+      });
+}