manager loop WIP, add nix flake

flake.nix

@@ -0,0 +1,76 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    systems.url = "github:nix-systems/default";
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+    flake-compat = {
+      url = "github:NixOS/flake-compat";
+      flake = false;
+    };
+  };
+
+  outputs =
+    {
+      nixpkgs,
+      ...
+    }@inputs:
+    with builtins;
+    with nixpkgs.lib;
+
+    let
+      doubles = import inputs.systems;
+      forAllSystems = genAttrs doubles;
+
+      pkgs_gen =
+        { ... }@args:
+        import nixpkgs args;
+
+      dmm_gen =
+        {
+          pkgs,
+          tools ? [ ],
+          specialArgs ? { },
+        }:
+        pkgs.rustPlatform.buildRustPackage (
+          let
+            src = cleanSource ./.;
+          in
+          final:
+          {
+            pname = "dockermcmgr";
+			version = "0.0.1";
+
+            inherit src;
+            cargoLock.lockFile = src + "/Cargo.lock";
+            nativeBuildInputs = tools;
+
+            buildInputs = 
+              with pkgs; [ sqlite ];
+
+          }
+          // specialArgs
+        );
+    in
+    {
+      packages = forAllSystems (
+        system:
+        let
+          pkgs = pkgs_gen { inherit system; };
+          iloader = dmm_gen { inherit pkgs; };
+        in
+        {
+          inherit iloader;
+          default = iloader;
+        }
+      );
+      formatter = forAllSystems (
+        system:
+        let
+          pkgs = pkgs_gen { inherit system; };
+        in
+        inputs.treefmt-nix.lib.mkWrapper pkgs {
+          programs.nixfmt.enable = true;
+        }
+      );
+    };
+}