inherit (builtins) map;
      rebuildScript = pkgs.writeScriptBin "rebuild" /* nu */ ''
        #!${pkgs.nushell}/bin/nu
        def print-notify [message: string] {
          print $"(ansi purple)[Rebuilder](ansi rst) ($message)"
          ^${pkgs.libnotify}/bin/notify-send "Rebuilder" $"($message)"
        }
        def --wrapped main [
          host: string = ""            # The host to build.
          --remote                     # Deploy to remote host using --target-host.
          --rollback                   # Rollback.
          --quiet (-q)                 # Run without output (for theme toggling).
          ...arguments                 # Extra arguments to pass to rebuild commands.
        ]: nothing -> nothing {
          let host = if ($host | is-not-empty) {
            if $host != (hostname) and not $remote {
              if not $quiet { print-notify $"Error: Building local configuration for hostname that does not match the local machine." }
              exit 1
            }
            $host
          } else if $remote {
            if not $quiet { print-notify "Error: Hostname not specified for remote deployment." }
            exit 1
          } else {
            (hostname)
          }

      inherit (builtins) map readFile;

          # Build locally (always).
          let os = (uname | get kernel-name)
          let config_path = if $os == "Darwin" { "/Users/jam/nixos" } else { "/home/jam/nixos" }
          # nh os/darwin switch [flake_path] --hostname [host] -- [nix_args]
          let base_args = [
            "switch"
            $config_path
            "--hostname" $host
            "--accept-flake-config" # Avoid asking for y/n approval for all settings.
          ] | append $arguments
          # Add target-host for remote deployments.
          let final_args = if $remote {
            $base_args | append ["--target-host" $"root@($host)"]
          } else {
            $base_args
          }
          let command = if $rollback {
            "rollback"
          } else {
            if $os == "Darwin" { "darwin" } else { "os" }
          }
          let final_args = if $rollback {
            [$host] | append $arguments
          } else {
            $final_args
          }
          # Execute final command.
          let action = if $remote { $"Deploying to: ($host)" } else { "Building locally:" }
          let platform = if $os == "Darwin" { "Darwin" } else { "NixOS" }
          if not $quiet { print-notify $"($action) ($platform). Configuration for: ($host)." }
          if $remote {
            try {
              NH_BYPASS_ROOT_CHECK=true NH_NO_CHECKS=true nh $command ...$final_args
            } catch {
              print-notify "Rebuild failed. Try again in a terminal."
              exit 1
            }
          } else {
            try {
              sudo NH_BYPASS_ROOT_CHECK=true NH_NO_CHECKS=true nh $command ...$final_args
            } catch {
              print-notify "Rebuild failed. Try again in a terminal."
              exit 1
            }
          }
          if $rollback {
            if not $quiet { print-notify $"Rollback for ($host) succeeded." }
          } else {
            if not $quiet { print-notify $"Rebuild for ($host) succeeded." }
          }
        }
      '';

      rebuildScript = pkgs.writeScriptBin "rebuild" (readFile ./nushell.rebuild.nu);

#!/usr/bin/env nu
# nu-lint-ignore: print_and_return_data
def print-notify [
   quiet: bool
   message: string
]: nothing -> nothing {
   if not $quiet {
      print $"(ansi purple)[Rebuilder](ansi rst) ($message)"
      try { notify-send Rebuilder $message }
   }
}
# nu-lint-ignore: max_function_body_length
def --wrapped main [
   host: string = ""    # The host to build.
   --remote             # Deploy to remote host using --target-host.
   --rollback           # Rollback.
   --quiet(-q)          # Run without output (for theme toggling).
   ...arguments: string # Extra arguments to pass to rebuild commands.
]: nothing -> nothing {
   let os = sys host | get long_os_version | split words | get --optional 0
   let config_path = if $os == Darwin { "/Users/jam/nixos" } else { "/home/jam/nixos" }
   let hostname = sys host | get hostname
   let nixos_configs = nix flake show --json | from json | get nixosConfigurations | columns
   let darwin_configs = nix flake show --json | from json | get darwinConfigurations | columns
   let host = if ($host | is-not-empty) {
      if $host != ($hostname) and not $remote {
         print-notify $quiet $"Error: Building local configuration for hostname that does not match the local machine."
         exit 1
      }
      $host
   } else if $remote {
      print-notify $quiet "Error: Hostname not specified for remote deployment."
      exit 1
   } else { $hostname }
   # Build locally (always).
   let os = (uname | get kernel-name)
   # nh os/darwin switch [flake_path] --hostname [host] -- [nix_args]
   let base_args = [
      switch
      $config_path
      --hostname $host
      --accept-flake-config
   ] | append $arguments
   # Add target-host for remote deployments.
   let final_args = if $remote {
      $base_args | append [
         "--target-host"
         $"root@($host)"
      ]
   } else { $base_args }
   let command = if $rollback {
      rollback
   } else {
      if $os == Darwin { "darwin" } else { "os" }
   }
   let final_args = if $rollback {
      [$host] | append $arguments
   } else {
      $final_args
   }
   let action = if $remote {
      $"Deploying to: ($host)"
   } else {
      "Building locally:"
   }
   let platform = if $os == Darwin { "Darwin" } else { "NixOS" }
   print-notify $quiet $"($action) ($platform). Configuration for: ($host)."
   if $remote {
      try {
         nh $command ...$final_args
      } catch {
         print-notify $quiet "Rebuild failed. Try again in a terminal."
         exit 1
      }
   } else {
      try {
         sudo NH_BYPASS_ROOT_CHECK=true NH_NO_CHECKS=true nh $command ...$final_args # nu-lint-ignore: wrap_external_with_complete
      } catch {
         print-notify $quiet "Rebuild failed. Try again in a terminal."
         exit 1
      }
   }
   if $rollback {
      print-notify $quiet $"Rollback for ($host) succeeded."
   } else {
      print-notify $quiet $"Rebuild for ($host) succeeded."
   }
}