diff --git a/README.org b/README.org
index 7658345..e38fe03 100644
--- a/README.org
+++ b/README.org
@@ -229,7 +229,6 @@ The [[info:emacs#Init File][init file (info)]] does not load the ~custom-file~ a
        citar-embark       ; citar and embark integration
        company            ; complete anything
        consult            ; consult completing-read
-       eglot              ; Emacs polyGLOT LSP client
        embark             ; act on any buffer selection
        engrave-faces      ; convert font-lock faces to text
        magit              ; Git Text-based User Interface
@@ -3228,36 +3227,47 @@ such a proper [[info:emacs#Directory Variables][.dir-locals.el]] file.
 #+caption: Configure =eglot= with =python-lsp-server= for Python.
 #+name: lst:configure-eglot+python-lsp-server-for-python
 #+begin_src emacs-lisp
-  (with-eval-after-load 'eglot
-    (setq-default
-     eglot-workspace-configuration
-     '(;; Disable the `:pyls_flake8' plugin to fall back to pycodestyle.
-       (:pylsp . (:plugins (:pyls_flake8 (:enabled t))))
-       (:pylsp . (:plugins (:jedi (:auto_import_modules ["numpy"])))))
-       (:pylsp . (:plugins (:jedi_completion (:cache_for ["astropy"])))))
+  (when (ensure-package-installation 'eglot)
+    (defvar eglot-server-programs
+      `((python-mode . ("pylsp")))
+      "Shadow the definition of `eglot-server-programs' in `eglot'.")
+    (with-eval-after-load 'eglot
+      (setq-default
+       eglot-workspace-configuration
+       '(;; Disable the `:pyls_flake8' plugin to fall back to pycodestyle.
+         (:pylsp . (:plugins (:pyls_flake8 (:enabled t))))
+         (:pylsp . (:plugins (:jedi (:auto_import_modules ["numpy"]))))
+         (:pylsp . (:plugins (:jedi_completion (:cache_for ["astropy"]))))))
 
-    (define-key eglot-mode-map (kbd "C-c n") #'flymake-goto-next-error)
-    (define-key eglot-mode-map (kbd "C-c p") #'flymake-goto-prev-error)
-    (define-key eglot-mode-map (kbd "C-c r") 'eglot-rename))
+      (define-key eglot-mode-map (kbd "C-c n") #'flymake-goto-next-error)
+      (define-key eglot-mode-map (kbd "C-c p") #'flymake-goto-prev-error)
+      (define-key eglot-mode-map (kbd "C-c r") 'eglot-rename)))
 #+end_src
 
 #+caption[Broken configure =eglot= with =python-lsp-server= for Python]:
 #+caption: Broken configure =eglot= with =python-lsp-server= for Python.
 #+name: lst:broken-configure-eglot+python-lsp-server-for-python
 #+begin_src emacs-lisp :tangle no
-  (with-eval-after-load 'eglot
-    (add-to-list 'eglot-server-programs '(python-mode "pylsp" "-vvv"))
-    (setq-default
-     eglot-workspace-configuration
-     '(;; To use flake8 instead of pycodestyle, see:
-       ;; https://github.com/python-lsp/python-lsp-server#configuration
-       (:pylsp . (:configurationSources ["flake8"]))
-       (:pylsp . (:plugins (:pycodestyle (:enabled :json-false))))
-       (:pylsp . (:plugins (:mccabe (:enabled :json-false))))
-       (:pylsp . (:plugins (:pyflakes (:enabled :json-false))))
-       (:pylsp . (:plugins (:flake8 (:enabled t))))
-       (:pylsp . (:plugins (:jedi (:auto_import_modules ["numpy"]))))
-       (:pylsp . (:plugins (:jedi_completion (:cache_for ["astropy"])))))))
+  (when (ensure-package-installation 'eglot)
+    (defvar eglot-server-programs
+      `((python-mode . ("pylsp" "-vvv")))
+      "Shadow the definition of `eglot-server-programs' in `eglot'.")
+    (with-eval-after-load 'eglot
+      (setq-default
+       eglot-workspace-configuration
+       '(;; To use flake8 instead of pycodestyle, see:
+         ;; https://github.com/python-lsp/python-lsp-server#configuration
+         (:pylsp . (:configurationSources ["flake8"]))
+         (:pylsp . (:plugins (:pycodestyle (:enabled :json-false))))
+         (:pylsp . (:plugins (:mccabe (:enabled :json-false))))
+         (:pylsp . (:plugins (:pyflakes (:enabled :json-false))))
+         (:pylsp . (:plugins (:flake8 (:enabled t))))
+         (:pylsp . (:plugins (:jedi (:auto_import_modules ["numpy"]))))
+         (:pylsp . (:plugins (:jedi_completion (:cache_for ["astropy"]))))))
+
+      (define-key eglot-mode-map (kbd "C-c n") #'flymake-goto-next-error)
+      (define-key eglot-mode-map (kbd "C-c p") #'flymake-goto-prev-error)
+      (define-key eglot-mode-map (kbd "C-c r") 'eglot-rename)))
 #+end_src
 
 #+caption[Start =eglot= in case of a proper =dir-local-variables-alist=]: