Clean up flake outputs

Dependencies

• [2] W2G433QU Refactor libdemo and flakeref for nix run commands
• [3] YWKMJUZS Add 06-windows-wine

Change contents

• replacement in 06-windows-wine/flake.nix at line 63
  [3.412077]→[3.412077:412269](∅→∅)
  − packages = {

  − default = pkgs.wttr-delft;

  − mingw32 = pkgs.pkgsCross.mingw32.wttr-delft;

  − mingwW64 = pkgs.pkgsCross.mingwW64.wttr-delft;

  − };

  −
  [3.412077]

  [3.412269]
  + packages.default = pkgs.pkgsCross.mingwW64.wttr-delft;
• replacement in 06-windows-wine/demo.sh at line 22
  [3.414333]→[2.2305:2335](∅→∅)
  − x nix build "${dir}#mingwW64"
  [3.414333]

  [3.414366]
  + x nix build "${dir}"