fix: add readme and fix installer apps

apps/installer.nix

@@ -5,7 +5,7 @@
 
   type = "app";
 
-  program = pkgs.writeShellScriptBin "installer" ''
+  program = builtins.toString (pkgs.writeShellScript "installer" ''
     #!${pkgs.stdenv.shell}
 
     set -e
@@ -39,6 +39,6 @@
     mount /dev/disk/by-label/boot /mnt/boot
 
     nixos-install --flake github:nmasur/dotfiles#''${FLAKE}
-  '';
+  '');
 
 }

apps/readme.nix

@@ -0,0 +1,11 @@
+{ pkgs, ... }: {
+
+  type = "app";
+
+  program = builtins.toString (pkgs.writeShellScript "readme" ''
+    #!${pkgs.stdenv.shell}
+
+    ${pkgs.glow}/bin/glow ${builtins.toString ../README.md}
+  '');
+
+}

flake.nix

@@ -69,10 +69,18 @@
         };
       };
 
-      # Format and install from nothing
       apps = forAllSystems (system:
         let pkgs = import nixpkgs { inherit system; };
-        in { installer = import ./apps/installer.nix { inherit pkgs; }; });
+        in rec {
+          default = readme;
+
+          # Format and install from nothing
+          installer = import ./apps/installer.nix { inherit pkgs; };
+
+          # Display the readme for this repository
+          readme = import ./apps/readme.nix { inherit pkgs; };
+
+        });
 
       # Used to run commands and edit files in this repo
       devShells = forAllSystems (system: