added bun flake

bun/flake.nix

@@ -0,0 +1,41 @@
+{
+  description = "A simple Rust development environment";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      utils,
+    }:
+    utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShells.default = pkgs.mkShell {
+
+          name = "flake-bunshell";
+
+          buildInputs = with pkgs; [
+            bun
+          ];
+
+          # Environment variables
+          shellHook = ''
+            					  export DEVSHELL_NAME="󱄅 flake/#89dceb| Bun/yellow"
+
+                        # Trigger zsh
+                        if [[ -z "$ZSH_VERSION" ]]; then
+                          exec zsh
+                        fi
+          '';
+        };
+      }
+    );
+}

flake.nix

@@ -10,6 +10,10 @@
           path = ./rust;
           description = "A standard Rust development environment";
         };
+        bun = {
+          path = ./bun;
+          description = "Flake for making a bun project";
+        };
       };
     };
 }