with-eval-after-load issue

config_project.el

(with-eval-after-load "transient"
  (progn
    (defvar mk-projectile)

    (define-transient-command mk-projectile ()
      "Projectile"
      [["Find"
        ("f" "File" projectile-find-file)
        ("F" "File Other Window" projectile-find-file-other-window)
        ("u" "Test File" projectile-find-test-file)]
       ["Search"
        ("a" "AG" projectile-ag)
        ("r" "AG" rg-project)
        ("A" "Grep" projectile-grep)]]
      [["Manage"
        ("p" "Switch Project" projectile-persp-switch-project)
        ("I" "Project Info" projectile-project-info)
        ("K" "Kill Project Buffers" projectile-kill-buffers)
        ("k" "Cache..." matcha-projectile-cache)]])
    ))

editing.el

(use-package transient
  :defer t ;; problecmatic instruction : works without, not with
  :config
  (transient-bind-q-to-quit))