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diff --git a/gnu/packages/graph.scm b/gnu/packages/graph.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; 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 graph)
+  #:use-module (guix download)
+  #:use-module (guix packages)
+  #:use-module (guix build-system gnu)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages maths)
+  #:use-module (gnu packages multiprecision)
+  #:use-module (gnu packages xml))
+
+(define-public igraph
+  (package
+    (name "igraph")
+    (version "0.7.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "http://igraph.org/nightly/get/c/igraph-"
+                           version ".tar.gz"))
+       (sha256
+        (base32
+         "1pxh8sdlirgvbvsw8v65h6prn7hlm45bfsl1yfcgd6rn4w706y6r"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:configure-flags
+       (list "--with-external-glpk"
+             "--with-external-blas"
+             "--with-external-lapack")))
+    (inputs
+     `(("gmp" ,gmp)
+       ("glpk" ,glpk)
+       ("libxml2" ,libxml2)
+       ("lapack" ,lapack)
+       ("openblas" ,openblas)
+       ("zlib" ,zlib)))
+    (home-page "http://igraph.org")
+    (synopsis "Network analysis and visualization")
+    (description
+     "This package provides a library for the analysis of networks and graphs.
+It can handle large graphs very well and provides functions for generating
+random and regular graphs, graph visualization, centrality methods and much
+more.")
+    (license license:gpl2+)))