From 7c6eaae56bc9ef57b60ceacf49a33cdd5966b361 Mon Sep 17 00:00:00 2001
From: Mark Meyer <mark@ofosos.org>
Date: Thu, 1 Feb 2018 15:07:58 +0100
Subject: [PATCH] gnu: Add fann.

* gnu/packages/machine-learning.scm (fann): New variable.
---
 gnu/packages/machine-learning.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index bd13cedcb..faa4bdf7f 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2016, 2017 Marius Bakke <mbakke@fastmail.com>
 ;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018 Mark Meyer <mark@ofosos.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -31,6 +32,7 @@
   #:use-module (guix build-system ocaml)
   #:use-module (guix build-system python)
   #:use-module (guix build-system r)
+  #:use-module (guix git-download)
   #:use-module (gnu packages)
   #:use-module (gnu packages autotools)
   #:use-module (gnu packages boost)
@@ -50,6 +52,35 @@
   #:use-module (gnu packages xml)
   #:use-module (gnu packages xorg))
 
+(define-public fann
+  (let ((commit "d71d54788bee56ba4cf7522801270152da5209d7"))
+    (package
+      (name "fann")
+      (version (string-append "2.2.0-1." (string-take commit 8)))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/libfann/fann.git")
+                      (commit version)))
+                (sha256
+                 (base32
+                  "0ibwpfrjs6q2lijs8slxjgzb2llcl6rk3v2ski4r6215g5jjhg3x"))))
+      (build-system cmake-build-system)
+      (arguments
+       `(#:phases (modify-phases %standard-phases
+                    (replace 'check
+                      (lambda* (#:key outputs #:allow-other-keys)
+                        (let* ((out (assoc-ref outputs "out")))
+                          (with-directory-excursion (string-append (getcwd) "/tests")
+                            (invoke "./fann_tests"))))))))
+      (home-page "http://leenissen.dk/fann/wp/")
+      (synopsis "Fast Artificial Neural Network")
+      (description
+       "FANN is a free open source neural network library, which implements
+multilayer artificial neural networks in C with support for both fully
+connected and sparsely connected networks.")
+      (license license:lgpl2.1))))
+
 (define-public libsvm
   (package
     (name "libsvm")
-- 
2.15.1