add flake

flake.nix

@@ -0,0 +1,37 @@
+{
+  description = "post lab";
+
+  inputs = {
+    nixpkgs.url      = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url  = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, ... }:
+    let 
+      cargoToml = (builtins.fromTOML (builtins.readFile ./server/Cargo.toml));
+    in (flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system ;
+        };
+      in
+      with pkgs;
+      {
+        devShells.default = mkShell {
+          buildInputs = [
+            openssl
+            pkg-config
+            nodejs
+          ];
+
+          shellHook = ''
+          '';
+        };
+
+        packages = {
+        };
+        
+      }
+    ));
+}
+