Improve nix development shell

flake.nix

@@ -10,18 +10,32 @@
       let
         pkgs = import nixpkgs { inherit system; };
         naersk-lib = pkgs.callPackage naersk { };
-      in {
+
+        # Needed at compile time (on build system)
+        nativeBuildInputs = with pkgs; [
+          gtk4
+          cairo
+          glib
+          pkg-config
+          poppler
+          wrapGAppsHook
+        ];
+        # Needed at runtime (on run system)
+        buildInputs = with pkgs; [ ];
+      in rec {
         defaultPackage = naersk-lib.buildPackage {
           src = ./.;
-          nativeBuildInputs = with pkgs; [
+          inherit buildInputs;
-            gtk4
+          inherit nativeBuildInputs;
-            cairo
-            glib
-            pkg-config
-            poppler
-            wrapGAppsHook
-          ];
         };
+        devShell = with pkgs;
+          mkShell {
+            buildInputs =
+              [ cargo rustc rustfmt pre-commit rustPackages.clippy ];
+            # Without inheriting nativeBuildinputs, cargo build will fail but that is good since we want to use only nix build
+            # inherit nativeBuildInputs;
 
+            RUST_SRC_PATH = rustPlatform.rustLibSrc;
+          };
       });
 }