base service with authentication and user creation

flake.nix

@@ -0,0 +1,41 @@
+{
+  description = "chatapp";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+  };
+
+  outputs = { nixpkgs, flake-utils, rust-overlay, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ rust-overlay.overlays.default ];
+        pkgs = import nixpkgs { inherit system overlays; };
+        rust = pkgs.rust-bin.stable.latest.default;
+        openssl = pkgs.openssl;
+      in {
+        packages.default = pkgs.rustPlatform.buildRustPackage {
+          pname = "-server";
+          version = "0.1.0";
+
+          src = ./.;
+          cargoLock = { lockFile = ./Cargo.lock; };
+
+          nativeBuildInputs = [ rust pkgs.pkg-config ];
+
+          buildInputs = [ openssl ];
+
+          OPENSSL_LIB_DIR = "${openssl.out}/lib";
+          OPENSSL_INCLUDE_DIR = "${openssl.dev}/include";
+          PKG_CONFIG_PATH = "${openssl.dev}/lib/pkgconfig";
+        };
+
+        devShells.default = pkgs.mkShell {
+          packages =
+            [ rust pkgs.cargo pkgs.rust-analyzer pkgs.pkg-config openssl ];
+          OPENSSL_DIR = openssl.dev;
+          PKG_CONFIG_PATH = "${openssl.dev}/lib/pkgconfig";
+        };
+      });
+}