gnu: Add Poly/ML.

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

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/local.mk

@@ -363,6 +363,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/skribilo.scm			\
   %D%/packages/slang.scm			\
   %D%/packages/smalltalk.scm			\
+  %D%/packages/sml.scm				\
   %D%/packages/speech.scm			\
   %D%/packages/spice.scm			\
   %D%/packages/ssh.scm				\

gnu/packages/sml.scm

@@ -0,0 +1,72 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Andy Patterson <ajpatter@uwaterloo.ca>
+;;;
+;;; 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 sml)
+  #:use-module (gnu packages lesstif)
+  #:use-module (gnu packages libffi)
+  #:use-module (gnu packages multiprecision)
+  #:use-module (gnu packages xorg)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix download)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages))
+
+(define-public polyml
+  (package
+    (name "polyml")
+    (version "5.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://github.com/polyml/polyml/archive/v"
+                           version ".tar.gz"))
+       (sha256
+        (base32 "0ycjl746h0m22w9nsdssjl47d56jih12gpkdg3yw65gakj70sd0r"))
+       (file-name (string-append name "-" version ".tar.gz"))))
+    (build-system gnu-build-system)
+    (inputs
+     `(("gmp" ,gmp)
+       ("lesstif",lesstif)
+       ("libffi" ,libffi)
+       ("libx11" ,libx11)
+       ("libxt" ,libxt)))
+    (arguments
+     '(#:configure-flags
+       (list "--with-system-libffi=yes"
+             "--with-x=yes"
+             "--with-threads=yes"
+             "--with-gmp=yes")
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'build 'build-compiler
+           (lambda* (#:key make-flags parallel-build? #:allow-other-keys)
+             (define flags
+               (if parallel-build?
+                   (cons (format #f "-j~d" (parallel-job-count))
+                         make-flags)
+                   make-flags))
+             (apply system* "make" (append flags (list "compiler"))))))))
+    (home-page "http://www.polyml.org/")
+    (synopsis "Standard ML implementation")
+    (description "Poly/ML is a Standard ML implementation.  It is fully
+compatible with the ML97 standard.  It includes a thread library, a foreign
+function interface, and a symbolic debugger.")
+    ;; Some source files specify 'or any later version'; some don't
+    (license
+     (list license:lgpl2.1
+           license:lgpl2.1+))))