add system packages

dev/rust/shell.nix

@@ -1,13 +1,21 @@
 { pkgs ? import <nixpkgs> {} }:
 
   pkgs.mkShell {
-    packages = with pkgs; [ cargo rustc ];
+    packages = with pkgs; [
+      # Rust
+      cargo
+      rustc
+
+      # System
+      pkg-config
+      util-linux
+    ];
 
     #inputsFrom = with pkgs; [ bat ];
     
     RUST_BACKTRACE = 1;
 
     shellHook = ''
-       echo "Ready to make some rust!"
+       echo "Ready to make some Rust!"
     '';
 }