nongnu: Add clhs.

* nongnu/packages/emacs.scm: New file.
(clhs): New variable.

nongnu/packages/emacs.scm

@@ -0,0 +1,69 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
+;;;
+;;; This file is not part of GNU Guix.
+;;;
+;;; GNU Guix 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 Guix 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 Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (nongnu packages emacs)
+  #:use-module (guix packages)
+  #:use-module (guix build-system emacs)
+  #:use-module (guix download)
+  #:use-module (nonguix licenses))
+
+(define-public clhs
+  (package
+    (name "clhs")
+    (version "0.6.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "http://beta.quicklisp.org/archive/clhs/2015-04-07/clhs-"
+                           version
+                           ".tgz"))
+       (sha256
+        (base32
+         "1cn5bfrcawrbc8s1wb07lpr6xv8758l1n5pgkyhamagmi1r0x128"))))
+    (build-system emacs-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'replace-loader
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (delete-file "clhs-use-local.el")
+             (with-output-to-file "clhs.el"
+               (lambda ()
+                 (display
+                  (string-append
+                   "(defun clhs-setup ()
+  (setq common-lisp-hyperspec-root
+        \"file://"
+                   (string-append (assoc-ref outputs "out")
+                                  "/HyperSpec-7-0/HyperSpec/")
+                   "\"))\n"
+                   "(provide 'clhs)"))))))
+         (add-after 'install 'install-doc
+           (lambda* (#:key inputs outputs #:allow-other-keys)
+             (copy-recursively "HyperSpec-7-0"
+                               (string-append (assoc-ref outputs "out")
+                                              "/HyperSpec-7-0")))))))
+    (home-page "http://quickdocs.org/clhs/")
+    (synopsis "Offline Common Lisp HyperSpec")
+    (description
+     "This package bundles the full Common Lisp HyperSpec ready for offline browsing.
+An Emacs package is provided for easy access.  Load it with:
+
+  (require 'clhs)
+  (clhs-setup)")
+    (license (nonfree "http://quickdocs.org/clhs/"))))