bug#10125: RFE: require and load-path-shadowing

[Achim Gratz <Stromeko@nexgo.de>]

Glenn Morris writes:
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10125#50
>
>    Turns out I was looking for invocation-directory and invocation-name.

Indeed, thanks.  So using your earlier patch as a template, this should
be good for emacs-24:

--8<---------------cut here---------------start------------->8---
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 6059f03..df194b8 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -632,11 +632,20 @@ untar into a directory named DIR; otherwise, signal an error."
   "Generate autoloads and do byte-compilation for package named NAME.
 PKG-DIR is the name of the package directory."
   (package-generate-autoloads name pkg-dir)
-  (let ((load-path (cons pkg-dir load-path)))
-    ;; We must load the autoloads file before byte compiling, in
-    ;; case there are magic cookies to set up non-trivial paths.
-    (load (expand-file-name (concat name "-autoloads") pkg-dir) nil t)
-    (byte-recompile-directory pkg-dir 0 t)))
+  (with-current-buffer (get-buffer-create "*package-compile*")
+    (goto-char (point-max))
+    (pop-to-buffer (current-buffer))
+    (or (zerop (call-process
+               (concat invocation-directory invocation-name)
+               nil t t "--batch" "-Q" "--eval"
+               (format
+                "(let ((pkg-dir \"%s\")(name \"%s\"))
+                    (progn (setq load-path (cons pkg-dir load-path))
+                    (load (expand-file-name (concat name \"-autoloads\") pkg-dir) nil t)
+                    (batch-byte-recompile-directory 0)))"
+                pkg-dir name)
+               pkg-dir))
+       (error "Compiling the package gave an error"))))
 
 (defun package--write-file-no-coding (file-name)
   (let ((buffer-file-coding-system 'no-conversion))
--8<---------------cut here---------------end--------------->8---

I've confirmed that Emacs 24.2 fails to install current Org from ELPA
without that patch when trying to install after having opened an Org
file.  It installs Org correctly in that same situation with the patch
that does the package compilation in an external Emacs process.


Regards
Achim.
-- 
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