gnu: mail: Add notifymuch. * gnu/packages/mail.scm (notifymuch): New variable.
gnu: dbus: Replace with 1.10.12 [security fix]. Fixes <https://bugs.freedesktop.org/show_bug.cgi?id=98157> "format string vulnerability processing ActivationFailure messages" * gnu/packages/glib.scm (dbus)[replacement]: New field. (dbus-1.10.12): New variable.
gnu: Add jack-keyboard. * gnu/packages/music.scm (jack-keyboard): New variable.
gnu: Add gx-switchless-wah-lv2. * gnu/packages/music.scm (gx-switchless-wah-lv2): New variable.
gnu: Add gx-slow-gear-lv2. * gnu/packages/music.scm (gx-slow-gear-lv2): New variable.
gnu: Add gx-vintage-fuzz-master-lv2. * gnu/packages/music.scm (gx-vintage-fuzz-master-lv2): New variable.
gnu: Add gx-super-fuzz-lv2. * gnu/packages/music.scm (gx-super-fuzz-lv2): New variable.
gnu: Add gx-voodoo-fuzz-lv2. * gnu/packages/music.scm (gx-voodoo-fuzz-lv2): New variable.
gnu: Add gx-hyperion-lv2. * gnu/packages/music.scm (gx-hyperion-lv2): New variable.
gnu: Add gx-saturator-lv2. * gnu/packages/music.scm (gx-saturator-lv2): New variable.
gnu: Add gx-suppa-tone-bender-lv2. * gnu/packages/music.scm (gx-suppa-tone-bender-lv2): New variable.
gnu: Add gx-push-pull-lv2. * gnu/packages/music.scm (gx-push-pull-lv2): New variable.
gnu: Add gx-tone-mender-lv2. * gnu/packages/music.scm (gx-tone-mender-lv2): New variable.
gnu: Add gx-overdriver-lv2. * gnu/packages/music.scm (gx-overdriver-lv2): New variable.
gnu: Add gx-vbass-preamp-lv2. * gnu/packages/music.scm (gx-vbass-preamp-lv2): New variable.
gnu: Add gx-guvnor-lv2. * gnu/packages/music.scm (gx-guvnor-lv2): New variable.
gnu: Add emacs-nginx-mode. * gnu/packages/emacs.scm (emacs-nginx-mode): New variable. Signed-off-by: Alex Kost <alezost@gmail.com>
gnu: Add emacs-evil. * gnu/packages/emacs.scm (emacs-evil): New variable. Co-authored-by: Alex Kost <alezost@gmail.com>
gnu: Add emacs-goto-chg. * gnu/packages/emacs.scm (emacs-goto-chg): New variable. Co-authored-by: Alex Kost <alezost@gmail.com>
gnu: python-pathlib: Update description. * gnu/packages/python.scm (python-pathlib, python2-pathlib): Update description.