gnu: Add sl.

* gnu/packages/toys.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

gnu/local.mk

@@ -346,6 +346,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/python.scm			\
   %D%/packages/python-crypto.scm		\
   %D%/packages/python-web.scm			\
+  %D%/packages/toys.scm				\
   %D%/packages/tryton.scm			\
   %D%/packages/qt.scm				\
   %D%/packages/ragel.scm			\

gnu/packages/toys.scm

@@ -0,0 +1,65 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
+;;;
+;;; This file is 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 (gnu packages toys)
+  #:use-module (gnu packages ncurses)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages))
+
+(define-public sl
+  (package
+    (name "sl")
+    (version "5.02")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://github.com/mtoyoda/" name
+                           "/archive/" version ".tar.gz"))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0fjnnnxxq7zh9bm3yzbj84fgap0rhblxi2m10br83747gxsrcn8y"))))
+    (build-system gnu-build-system)
+    (inputs
+     `(("ncurses" ,ncurses)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (delete 'configure)            ; no configure script
+         (delete 'check)                ; no tests
+         (replace 'install              ; no ‘make install’ target
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out (assoc-ref outputs "out"))
+                    (bin (string-append out "/bin"))
+                    (man (string-append out "/share/man"))
+                    (man1 (string-append man "/man1"))
+                    (man1-ja (string-append man "/ja/man1")))
+               (install-file "sl" bin)
+               (install-file "sl.1" man1)
+               (mkdir-p man1-ja)
+               (copy-file "sl.1.ja" (string-append man1-ja "/sl.1"))
+               #t))))))
+    (home-page "http://www.tkl.iis.u-tokyo.ac.jp/~toyoda/index_e.html")
+    (synopsis "Joke command to correct typing \"sl\" by mistake")
+    (description
+     "@dfn{SL} (for Steam Locomotive) displays one of several animated trains
+on the text terminal.  It serves no useful purpose but to discourage mistakenly
+typing @command{sl} instead of @command{ls}.")
+    (license (license:non-copyleft "file://LICENSE"
+                                   "See LICENSE in the distribution."))))