gnu: Add maven-resolver-api.

* gnu/packages/maven.scm: New file.
(maven-resolver-api): New variable.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

gnu/local.mk

@@ -281,6 +281,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/marst.scm			\
   %D%/packages/mate.scm             \
   %D%/packages/maths.scm			\
+  %D%/packages/maven.scm			\
   %D%/packages/mc.scm				\
   %D%/packages/mcrypt.scm			\
   %D%/packages/medical.scm			\

gnu/packages/maven.scm

@@ -0,0 +1,50 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
+;;;
+;;; 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 maven)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix utils)
+  #:use-module (guix build-system ant)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages java))
+
+(define-public maven-resolver-api
+  (package
+    (name "maven-resolver-api")
+    (version "1.1.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://github.com/apache/maven-resolver/"
+                                  "archive/maven-resolver-" version ".tar.gz"))
+              (sha256
+               (base32
+                "0rpvdg3qr1j88gw0ankf0wnwfyq6238mdlm7s39vf5jrcvhdgwcl"))))
+    (build-system ant-build-system)
+    (arguments
+     `(#:jar-name "maven-resolver-api.jar"
+       #:source-dir "maven-resolver-api/src/main/java"
+       #:test-dir "maven-resolver-api/src/test"))
+    (native-inputs
+     `(("java-junit" ,java-junit)
+       ("java-hamcrest-core" ,java-hamcrest-core)))
+    (home-page "https://github.com/apache/maven-resolver")
+    (synopsis "Maven repository system API")
+    (description "This package contains the API for the maven repository system.")
+    (license license:asl2.0)))