nix: refactor package

Author: MarcelCoding

derivation.nix

@@ -14,11 +14,11 @@
         in
         {
           packages = {
-            zia-client = pkgs.callPackage ./derivation.nix {
+            zia-client = pkgs.callPackage ./package.nix {
               cargoToml = ./zia-client/Cargo.toml;
             };
 
-            zia-server = pkgs.callPackage ./derivation.nix {
+            zia-server = pkgs.callPackage ./package.nix {
               cargoToml = ./zia-server/Cargo.toml;
             };
           };

flake.nix

@@ -0,0 +1,19 @@
+{ lib, rustPlatform, cargoToml, ... }:
+
+let
+  manifest = (lib.importTOML cargoToml).package;
+in
+rustPlatform.buildRustPackage {
+  pname = manifest.name;
+  inherit (manifest) version;
+
+  src = lib.cleanSource ./.;
+  cargoLock.lockFile = ./Cargo.lock;
+
+  cargoBuildFlags = "-p ${manifest.name}";
+  cargoTestFlags = "-p ${manifest.name}";
+
+  meta = {
+    mainProgram = manifest.name;
+  };
+}