revitalized

flake.nix

@@ -1,13 +1,14 @@
 {
-  description = "Rust shells";
-
+  description = "Rustup";
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     rust-overlay.url = "github:oxalica/rust-overlay";
   };
-
   outputs = inputs @ {...}: let
     additionalPackages = [
+      pkgs.cowsay
+      pkgs.just
+      pkgs.nasm
       pkgs.qemu
       pkgs.xorriso
     ];
@@ -15,7 +16,6 @@
       system = "x86_64-linux";
       overlays = [(import inputs.rust-overlay)];
     };
-
     rustup = {
       package = pkgs.rustup;
       path = "${pkgs.rustup}/lib/rustlib.src/rust/library";
@@ -23,12 +23,18 @@
   in {
     devShell.x86_64-linux = pkgs.mkShell {
       packages = [
-        rustup.package
         additionalPackages
+        rustup.package
       ];
-      env = {
-        RUST_SRC_PATH = rustup.path;
-      };
+      shellHook = ''
+        echo "Run 'exit' if you don't see something cowsaid." &&
+        export RUST_SRC_PATH=rustup.path &&
+        rustup default nightly &&
+        rustup component add rust-src &&
+        rustup component add rust-analyzer &&
+        export PS1='\h@\[\e[30;48;5;202;1m\]rustboot\[\e[0m\]|\w\\$ ' &&
+        cowsay "Welcome to rust-boot! Run 'just' to build and 'just run' to launch QEMU!"
+      '';
     };
   };
 }