Basic POC cli working

flake.nix

@@ -0,0 +1,37 @@
+{
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    naersk.url = "github:nix-community/naersk"; #https://github.com/nix-community/naersk
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs = {
+    self,
+    flake-utils,
+    naersk,
+    nixpkgs,
+  }:
+    flake-utils.lib.eachDefaultSystem (
+      system: let
+        pkgs = (import nixpkgs) {
+          inherit system;
+        };
+
+        naersk' = pkgs.callPackage naersk {};
+      in let
+        deps = [pkgs.pkg-config pkgs.openssl];
+      in {
+        # For `nix build` & `nix run`:
+        defaultPackage = naersk'.buildPackage {
+          name = "somcli";
+          src = ./.;
+          buildInputs = deps;
+        };
+
+        # For `nix develop` (optional, can be skipped):
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [rustc cargo rustfmt] ++ deps;
+        };
+      }
+    );
+}