Created Use org-roam V2 "--with-native-compilation" (markdown)

Use-org-roam-V2-"--with-native-compilation".md

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+Even after setting `org-roam-v2-ack` to `t` in my `init.el` file, everytime my Emacs updated org-roam (through M-x `list-packages`) native compilation would display the "You are now on V2" warning and native compilation would fail.
+
+The problem is that the package was compiled to native code asynchronously (i.e. with a separate emacs process started with `--batch` that did not read my `init.el` file) `org-roam-v2-ack` was not set; resulting in the warning (with `:error` level) that aborted the native compilation.  Luckily, there is the `native-comp-async-env-modifier-form` that can be customized to add some code to execute before compiling asynchronously, so I solved it like this:
+
+    (defun phc-prognify-and-append (form new-form)
+      "Wrap FORM in `progn' if needed and append NEW-FORM"
+      (cond ((and (consp form)
+                  (eq (car form) 'progn))
+             (append form (list new-form)))
+            ((null form)
+             `(progn ,new-form))
+            (t
+             `(progn ,form ,new-form))))
+    (use-package org-roam
+      ;; ... snip other configuration irrelevant for this wiki page ...
+      :init
+      (defvar org-roam-v2-ack t)
+      (set-default 'native-comp-async-env-modifier-form
+                   (phc-prognify-and-append
+                    (when (boundp 'native-comp-async-env-modifier-form)
+                      native-comp-async-env-modifier-form)
+                    `(defvar org-roam-v2-ack ,org-roam-v2-ack))))