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+-*- outline -*-
+
+Copyright (C) 2013 Free Software Foundation, Inc.
+See the end of the file for license conditions.
+
+NOTES FOR EMACS CONTINUOUS BUILD ON HYDRA
+
+A continuous build for Emacs can be found at
+http://hydra.nixos.org/jobset/gnu/emacs-trunk
+http://hydra.nixos.org/jobset/gnu/emacs-24
+
+* It builds Emacs on various platforms.
+Sometimes jobs fail due to hydra problems rather than Emacs problems.
+Eg it seems like the cygwin build will never work again.
+http://lists.gnu.org/archive/html/hydra-users/2013-08/msg00000.html
+
+* Mail notifications
+In addition to the web interface, Hydra can send notifications by
+email when the build status of a project changes—e.g., from
+`SUCCEEDED' to `FAILED'.  It sends notifications about build status in
+Emacs trunk to emacs-buildstatus@gnu.org.
+
+If you want to receive these notifications, please subscribe at
+http://lists.gnu.org/mailman/listinfo/emacs-buildstatus
+
+* The Emacs jobset consists of the following jobs:
+
+** The `tarball' job
+which gets a checkout from bzr, and does a bootstrap followed
+by running make-dist to create a tarball.  If this job fails, all the
+others will too (because they use the tarball as input).
+
+** The `build' job
+which starts from the tarball and does a normal build
+
+** The 'coverage' job
+does a gcov build and then runs `make check'.  Fails if any test fails.
+
+* Nix expressions
+The recipe for GNU Emacs are available via Git:
+http://git.savannah.gnu.org/cgit/hydra-recipes.git/tree/emacs
+
+To modify the build job, email the patch to hydra-users@gnu.org.  The
+build recipes are written in the Nix language.
+
+* Other Information
+For a list of other GNU packages that have a continuous build on
+Hydra, see http://hydra.nixos.org/project/gnu
+
+See http://www.gnu.org/software/devel.html#Hydra for more information.
+
+
+This file is part of GNU Emacs.
+
+GNU Emacs is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+GNU Emacs is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.