// GNU Guix --- Functional package management for GNU
// Copyright © 2016 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/>.

var outerRadius = Math.max(nodeArray.length * 15, 500) / 2,
    innerRadius = outerRadius - Math.min(nodeArray.length * 5, 200),
    width = outerRadius * 2,
    height = outerRadius * 2,
    colors = d3.scale.category20c(),
    matrix = [];

function neighborsOf (node) {
    return links.filter(function (e) {
        return e.source === node;
    }).map(function (e) {
       return e.target;
    });
}

function zoomed () {
    zoomer.attr("transform",
                "translate(" + d3.event.translate + ")" +
                "scale(" + d3.event.scale + ")");
}

function fade (opacity, root) {
    return function (g, i) {
        root.selectAll("g path.chord")
            .filter(function (d) {
                return d.source.index != i && d.target.index != i;
            })
            .transition()
            .style("opacity", opacity);
    };
}

// Now that we have all nodes in an object we can replace each reference
// with the actual node object.
links.forEach(function (link) {
  link.target = nodes[link.target];
  link.source = nodes[link.source];
});

// Construct a square matrix for package dependencies
nodeArray.forEach(function (d, index, arr) {
    var source = ind;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2017, 2018, 2019 Ludovic Courtès &lt;ludo@gnu.org&gt;
;;; Copyright © 2018 Jan (janneke) Nieuwenhuizen &lt;janneke@gnu.org&gt;
;;;
;;; 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 &lt;http://www.gnu.org/licenses/&gt;.

(define-module (test-union)
  #:use-module (guix tests)
  #:use-module (guix store)
  #:use-module (guix utils)
  #:use-module (guix derivations)
  #:use-module (guix packages)
  #:use-module (guix build union)
  #:use-module ((guix build utils)
                #:select (with-directory-excursion directory-exists?))
  #:use-module (gnu packages bootstrap)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-64)
  #:use-module (rnrs io ports)
  #:use-module (ice-9 match))

;; Exercise the (guix build union) module.

(define %store
  (open-connection-for-tests))


(test-begin &quot;union&quot;)

(test-assert &quot;union-build with symlink to directory&quot;
  ;; http://bugs.gnu.org/17083
  ;; Here both ONE and TWO provide an element called &apos;foo&apos;, but in ONE it&apos;s a
  ;; directory whereas in TWO it&apos;s a symlink to a directory.
  (let* ((one     (build-expression-&gt;derivation
                   %store &quot;one&quot;
                   &apos;(begin
                      (use-modules (guix build utils) (srfi srfi-26))
                      (let ((foo (string-append %output &quot;/foo&quot;)))
                        (mkdir-p foo)
                        (call-with-output-file (string-append foo &quot;/one&quot;)
                          (cut display &quot;one&quot; &l