tweak(python): better pyenv integration (WIP)

core/me-builtin.el

@@ -908,6 +908,18 @@ Functions are differentiated into \"special forms\", \"built-in functions\" and
      (when (derived-mode-p 'gud-mode)
        (delete-overlay +gud-overlay)))))
 
+(use-package python
+  :init
+  (defcustom +python-enable-pyenv nil
+    "Enable integration for pyenv.
+This variable should be set early, either in \"early-config.el\" or \"init-tweaks.el\"."
+    :group 'minemacs :type 'boolean)
+  (when +python-enable-pyenv (and (executable-find "pyenv") (file-directory-p "~/.pyenv/shims/"))
+    (setenv "WORKON_HOME"                  "~/.pyenv/versions")
+    (setenv "PIPENV_PYTHON"                "~/.pyenv/shims/python")
+    (setenv "VIRTUALENVWRAPPER_PYTHON"     "~/.pyenv/shims/python")
+    (setenv "VIRTUALENVWRAPPER_VIRTUALENV" "~/.pyenv/shims/python")))
+
 (use-package org
   :straight (:type built-in)
   :preface