Do a "make bootstrap". If that's not enough, grep for
"eieio-constructor" in your *.elc files (yes: el*C*) and recompile those.
Stefan
>>>>> "Kaushal" == Kaushal <kaushal.modi@gmail.com> writes:
> Hi,
> I built emacs from git (commit
> http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=81d89d88aef5de720e7fbeecbfb295d6eaf6fd37
> ) and it runs fine except that it broke compatibility with a 3rd party
> package on Melpa called gist ( https://github.com/defunkt/gist.el ).
> I grepped for "eieio-constructor" in the package install directory but I
> found nothing.
> So probably some internal call to that ex-function is causing this error.
> I get this on enabling `debug-on-error':
> Debugger entered--Lisp error: (void-function eieio-constructor)
> eieio-constructor(gh-gist-api "api" :sync nil :cache t :num-retries 1)
> apply(eieio-constructor gh-gist-api ("api" :sync nil :cache t
> :num-retries 1))
> gh-gist-api("api" :sync nil :cache t :num-retries 1)
> gist-get-api(nil)
> gist-list(nil)
> funcall-interactively(gist-list nil)
> #<subr call-interactively>(gist-list record nil)
> ad-Advice-call-interactively(#<subr call-interactively> gist-list record
> nil)
> apply(ad-Advice-call-interactively #<subr call-interactively> (gist-list
> record nil))
> call-interactively(gist-list record nil)
> command-execute(gist-list record)
> execute-extended-command(nil "gist-list")
> smex-read-and-run(("gist-list" "customize" "gist-buffer" "sml/setup"
> "git-gutter+-commit" "git-gutter+-mode" "guide-key-mode" "sos-sel"
> "list-packages" "count-words-region" "sos-diff" "zenburn"
> "sos-discardco-force" "leuven" "kmacro-insert-counter"
> "paradox-list-packages" "reload-init" "sos-up" "smyx" "modi-mode"
> "edebug-defun" "global-unset-key" "sos-co-nolock" "unbind-from-modi-map"
> "mc/insert-numbers" "modi/set-linum" "bzg-big-fringe-mode"
> "mc--insert-number-and-increase" "modi/outshine-table-of-contents"
> "fci-mode" "sos-discardco" "browse-url-firefox" "ggtags-update-tags"
> "describe-personal-keybindings" "load-file" "ediff-buffers"
> "toggle-truncate-lines" "revert-all-buffers" "calc" "sx-tab-newest"
> "customize-face" "shell-script-mode" "query-exchange" "number/add"
> "matlab-shell" "verilog-mode" "package-list-packages" "ag" "describe-char"
> "emacs-lisp-mode" ...))
> smex()
> funcall-interactively(smex)
> #<subr call-interactively>(smex nil nil)
> ad-Advice-call-interactively(#<subr call-interactively> smex nil nil)
> apply(ad-Advice-call-interactively #<subr call-interactively> (smex nil
> nil))
> call-interactively(smex nil nil)
> command-execute(smex)
> Emacs version: GNU Emacs 25.0.50.10 (x86_64-unknown-linux-gnu, GTK+ Version
> 2.10.4) of 2015-02-18