lang/python: add bootstrap

modules/lang/python/packages.el

@@ -7,3 +7,20 @@
 
 (when (featurep! :completion company)
   (package! company-anaconda))
+
+;;
+(def-bootstrap! python
+  ;; Since there are so many possible setups for a python environment (pyenv,
+  ;; virtualenv, etc), I'll leave it to you and only take care of installing
+  ;; dependencies available via pip.
+  (unless (executable-find "python")
+    (error "python isn't installed"))
+  (unless (executable-find "pip")
+    (error "pip isn't installed"))
+  (when-let (pkgs (cl-remove-if
+                   (lambda (pkg) (zerop (shell-command (format "pip show %s" pkg))))
+                   '("jedi" "setuptools")))
+    (funcall (if (file-writable-p (executable-find "pip")) 'sh 'sudo)
+             "pip install %s"
+             (string-join pkgs " "))
+    t))