gnu: Add squirrel.

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

gnu/local.mk

@@ -436,6 +436,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/speech.scm			\
   %D%/packages/spice.scm			\
   %D%/packages/sqlite.scm			\
+  %D%/packages/squirrel.scm			\
   %D%/packages/ssh.scm				\
   %D%/packages/sssd.scm				\
   %D%/packages/stalonetray.scm			\

gnu/packages/squirrel.scm

@@ -0,0 +1,55 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Li-cheng (Andy) Tai <atai@atai.org>
+;;
+;;; 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 squirrel)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages cmake)
+  #:use-module (guix build-system cmake)
+  #:use-module (guix git-download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build utils)
+  #:use-module (guix packages)
+  #:use-module (guix utils))
+
+(define-public squirrel
+  (let ((commit "51137b84e66c4d526809fd8a59f4ba1d38138c76"))
+    (package
+      (name "squirrel")
+      (version "3.1")
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/albertodemichelis/squirrel.git")
+                      (commit commit)))
+                (file-name (string-append name "-" version "-checkout"))
+                (sha256
+                 (base32
+                  "0vbiv1q3qcy2vj8y0b9a2ckswl9ld398n3jnxijvwddrjgya5zav"))))
+      (build-system cmake-build-system)
+      (arguments
+       '(#:tests? #f)) ; no tests
+      (native-inputs
+       `(("cmake" ,cmake)))
+      (home-page "https://squirrel-lang.org/")
+      (synopsis "High level imperative, object-oriented programming language")
+      (description
+       "Squirrel is a high level imperative, object-oriented programming
+language, designed to be a light-weight scripting language that fits in the
+size, memory bandwidth, and real-time requirements of applications like video
+games.")
+      (license license:expat))))