"with-editor.el" library was a part of Magit, now (since 2.5.0) it is a separate package.
"debbugs.el" now depends on "async" library. [PATCH 1/4] gnu: Add emacs-with-editor. [PATCH 2/4] gnu: magit: Update to 2.5.0. [PATCH 3/4] gnu: Add emacs-async. [PATCH 4/4] gnu: emacs-debbugs: Update to 0.9.