diff --git a/election/migrations/0003_auto_20171202_1819.py b/election/migrations/0003_auto_20171202_1819.py
new file mode 100644
index 00000000..ef7868d6
--- /dev/null
+++ b/election/migrations/0003_auto_20171202_1819.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('election', '0002_election_archived'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='role',
+            options={'ordering': ('order',)},
+        ),
+        migrations.AddField(
+            model_name='role',
+            name='order',
+            field=models.PositiveIntegerField(editable=False, default=0, db_index=True),
+            preserve_default=False,
+        ),
+    ]
diff --git a/election/models.py b/election/models.py
index 2d4599e7..937bca74 100644
--- a/election/models.py
+++ b/election/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from ordered_model.models import OrderedModel
 from django.utils.translation import ugettext_lazy as _
 from django.utils import timezone
 
@@ -81,10 +82,15 @@ class Election(models.Model):
             results[role.title] = role.results(total_vote)
         return results
 
+    def delete(self):
+        for election_list in self.election_lists.all():
+            election_list.delete()
+        super(Election, self).delete()
+
     # Permissions
 
 
-class Role(models.Model):
+class Role(OrderedModel):
     """
     This class allows to create a new role avaliable for a candidature
     """
@@ -149,6 +155,10 @@ class Candidature(models.Model):
     program = models.TextField(_('description'), null=True, blank=True)
     election_list = models.ForeignKey(ElectionList, related_name='candidatures', verbose_name=_('election list'))
 
+    def delete(self):
+        for vote in self.votes.all():
+            vote.delete()
+
     def can_be_edited_by(self, user):
         return (user == self.user) or user.can_edit(self.role.election)
 
diff --git a/election/templates/election/election_detail.jinja b/election/templates/election/election_detail.jinja
index 0dbafeab..26be2e3d 100644
--- a/election/templates/election/election_detail.jinja
+++ b/election/templates/election/election_detail.jinja
@@ -273,7 +273,8 @@ th {
                     </th>
                     {%- endfor %}
                 </thead>
-                {%- for role in election.roles.all() %}
+                {%- set role_list = election.roles.order_by('order').all() %}
+                {%- for role in role_list %}
                 {%- set count = [0] %}
                 {%- set role_data = election_form.data.getlist(role.title) if role.title in election_form.data else [] %}
                 <tbody data-max-choice="{{role.max_choice}}" class="role{{ ' role_error' if role.title in election_form.errors else '' }}{{ ' role__multiple-choices' if role.max_choice > 1 else ''}}">
@@ -283,6 +284,22 @@ th {
                             {% if user.can_edit(role) and election.is_vote_editable -%}
                                 <a href="{{url('election:update_role', role_id=role.id)}}">{% trans %}Edit{% endtrans %}</a>
                                 <a href="{{url('election:delete_role', role_id=role.id)}}">{% trans %}Delete{% endtrans %}</a>
+                                <span style="float:right">
+                                    {%- if role == role_list.last() %}
+                                    <button disabled><i class="fa fa-arrow-down"></i></button>
+                                    <button disabled><i class="fa fa-caret-down"></i></button>
+                                    {%- else %}
+                                    <button type="button" onclick="window.location.replace('?role={{ role.id }}&action=bottom');"><i class="fa fa-arrow-down"></i></button>
+                                    <button type="button" onclick="window.location.replace('?role={{ role.id }}&action=down');"><i class="fa fa-caret-down"></i></button>
+                                    {%- endif %}
+                                    {% if role == role_list.first() %}
+                                    <button disabled><i class="fa fa-caret-up"></i></button>
+                                    <button disabled><i class="fa fa-arrow-up"></i></button>
+                                    {% else %}
+                                    <button type="button" onclick="window.location.replace('?role={{ role.id }}&action=up');"><i class="fa fa-caret-up"></i></button>
+                                    <button type="button" onclick="window.location.replace('?role={{ role.id }}&action=top');"><i class="fa fa-arrow-up"></i></button>
+                                    {% endif %}
+                                </span>
                             {%- endif -%}
                             <br><span class='role__description'><p>{{ role.description }}</p></span>
                             {%- if role.max_choice > 1 and not election.has_voted(user) and election.can_vote(user) %}
diff --git a/election/views.py b/election/views.py
index 445b9a5a..8b77994a 100644
--- a/election/views.py
+++ b/election/views.py
@@ -177,6 +177,23 @@ class ElectionDetailView(CanViewMixin, DetailView):
     template_name = 'election/election_detail.jinja'
     pk_url_kwarg = "election_id"
 
+    def get(self, request, *arg, **kwargs):
+        r = super(ElectionDetailView, self).get(request, *arg, **kwargs)
+        election = self.get_object()
+        if request.user.can_edit(election) and election.is_vote_editable:
+            action = request.GET.get('action', None)
+            role = request.GET.get('role', None)
+            if action and role and Role.objects.filter(id=role).exists():
+                if action == "up":
+                    Role.objects.get(id=role).up()
+                elif action == "down":
+                    Role.objects.get(id=role).down()
+                elif action == "bottom":
+                    Role.objects.get(id=role).bottom()
+                elif action == "top":
+                    Role.objects.get(id=role).top()
+        return r
+
     def get_context_data(self, **kwargs):
         """ Add additionnal data to the template """
         kwargs = super(ElectionDetailView, self).get_context_data(**kwargs)
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index 51d5023e..96bc80aa 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2017-11-06 00:40+0100\n"
+"POT-Creation-Date: 2017-12-02 19:02+0100\n"
 "PO-Revision-Date: 2016-07-18\n"
 "Last-Translator: Skia <skia@libskia.so>\n"
 "Language-Team: AE info <ae.info@utbm.fr>\n"
@@ -19,7 +19,7 @@ msgstr ""
 #: accounting/models.py:61 accounting/models.py:110 accounting/models.py:138
 #: accounting/models.py:197 club/models.py:47
 #: core/templates/core/base.jinja:297 counter/models.py:113
-#: counter/models.py:139 counter/models.py:183 forum/models.py:49
+#: counter/models.py:140 counter/models.py:184 forum/models.py:49
 #: launderette/models.py:38 launderette/models.py:84 launderette/models.py:110
 #: stock/models.py:38 stock/models.py:54 stock/models.py:77 stock/models.py:97
 msgid "name"
@@ -66,8 +66,8 @@ msgid "account number"
 msgstr "numero de compte"
 
 #: accounting/models.py:113 accounting/models.py:139 club/models.py:227
-#: com/models.py:67 com/models.py:178 counter/models.py:148
-#: counter/models.py:184 trombi/models.py:149
+#: com/models.py:67 com/models.py:178 counter/models.py:149
+#: counter/models.py:185 trombi/models.py:149
 msgid "club"
 msgstr "club"
 
@@ -88,13 +88,13 @@ msgstr "Compte club"
 msgid "%(club_account)s on %(bank_account)s"
 msgstr "%(club_account)s sur %(bank_account)s"
 
-#: accounting/models.py:195 club/models.py:228 counter/models.py:465
-#: election/models.py:16 launderette/models.py:148
+#: accounting/models.py:195 club/models.py:228 counter/models.py:466
+#: election/models.py:17 launderette/models.py:148
 msgid "start date"
 msgstr "date de début"
 
-#: accounting/models.py:196 club/models.py:229 counter/models.py:466
-#: election/models.py:17
+#: accounting/models.py:196 club/models.py:229 counter/models.py:467
+#: election/models.py:18
 msgid "end date"
 msgstr "date de fin"
 
@@ -107,7 +107,7 @@ msgid "club account"
 msgstr "compte club"
 
 #: accounting/models.py:200 accounting/models.py:257 counter/models.py:53
-#: counter/models.py:297
+#: counter/models.py:298
 msgid "amount"
 msgstr "montant"
 
@@ -128,18 +128,19 @@ msgid "journal"
 msgstr "classeur"
 
 #: accounting/models.py:258 core/models.py:645 core/models.py:1046
-#: core/models.py:1090 core/models.py:1117 counter/models.py:300
-#: counter/models.py:350 counter/models.py:483 eboutic/models.py:39
+#: core/models.py:1090 core/models.py:1117 counter/models.py:301
+#: counter/models.py:351 counter/models.py:484 eboutic/models.py:39
 #: eboutic/models.py:73 forum/models.py:239 forum/models.py:314
 #: stock/models.py:76
 msgid "date"
 msgstr "date"
 
-#: accounting/models.py:259 counter/models.py:484 stock/models.py:79
+#: accounting/models.py:259 counter/models.py:115 counter/models.py:485
+#: stock/models.py:79
 msgid "comment"
 msgstr "commentaire"
 
-#: accounting/models.py:260 counter/models.py:301 counter/models.py:351
+#: accounting/models.py:260 counter/models.py:302 counter/models.py:352
 #: subscription/models.py:55
 msgid "payment method"
 msgstr "méthode de paiement"
@@ -165,7 +166,7 @@ msgid "accounting type"
 msgstr "type comptable"
 
 #: accounting/models.py:269 accounting/models.py:371 accounting/models.py:398
-#: accounting/models.py:422 core/models.py:1116 counter/models.py:342
+#: accounting/models.py:422 core/models.py:1116 counter/models.py:343
 msgid "label"
 msgstr "étiquette"
 
@@ -264,7 +265,7 @@ msgstr ""
 "Vous devez fournir soit un type comptable simplifié ou un type comptable "
 "standard"
 
-#: accounting/models.py:366 counter/models.py:143
+#: accounting/models.py:366 counter/models.py:144
 msgid "code"
 msgstr "code"
 
@@ -365,9 +366,10 @@ msgstr "Compte en banque : "
 #: core/templates/core/user_edit.jinja:19
 #: counter/templates/counter/last_ops.jinja:29
 #: counter/templates/counter/last_ops.jinja:59
-#: election/templates/election/election_detail.jinja:280
-#: election/templates/election/election_detail.jinja:330
-#: election/templates/election/election_detail.jinja:378
+#: election/templates/election/election_detail.jinja:271
+#: election/templates/election/election_detail.jinja:286
+#: election/templates/election/election_detail.jinja:350
+#: election/templates/election/election_detail.jinja:401
 #: forum/templates/forum/macros.jinja:21 forum/templates/forum/macros.jinja:123
 #: launderette/templates/launderette/launderette_admin.jinja:16
 #: launderette/views.py:182 sas/templates/sas/album.jinja:26
@@ -416,9 +418,9 @@ msgstr "Nouveau compte club"
 #: counter/templates/counter/counter_list.jinja:17
 #: counter/templates/counter/counter_list.jinja:33
 #: counter/templates/counter/counter_list.jinja:55
-#: election/templates/election/election_detail.jinja:279
-#: election/templates/election/election_detail.jinja:327
-#: election/templates/election/election_detail.jinja:375
+#: election/templates/election/election_detail.jinja:285
+#: election/templates/election/election_detail.jinja:347
+#: election/templates/election/election_detail.jinja:398
 #: forum/templates/forum/macros.jinja:20 forum/templates/forum/macros.jinja:62
 #: forum/templates/forum/macros.jinja:117
 #: launderette/templates/launderette/launderette_list.jinja:16
@@ -926,21 +928,21 @@ msgstr "Vous ne pouvez pas faire de boucles dans les clubs"
 msgid "A club with that unix_name already exists"
 msgstr "Un club avec ce nom UNIX existe déjà."
 
-#: club/models.py:226 counter/models.py:463 counter/models.py:481
-#: eboutic/models.py:38 eboutic/models.py:72 election/models.py:140
+#: club/models.py:226 counter/models.py:464 counter/models.py:482
+#: eboutic/models.py:38 eboutic/models.py:72 election/models.py:154
 #: launderette/models.py:114 launderette/models.py:152 sas/models.py:180
 #: trombi/models.py:148
 msgid "user"
 msgstr "nom d'utilisateur"
 
-#: club/models.py:230 core/models.py:180 election/models.py:139
-#: election/models.py:155 trombi/models.py:150
+#: club/models.py:230 core/models.py:180 election/models.py:153
+#: election/models.py:173 trombi/models.py:150
 msgid "role"
 msgstr "rôle"
 
 #: club/models.py:232 core/models.py:66 counter/models.py:114
-#: counter/models.py:140 election/models.py:13 election/models.py:93
-#: election/models.py:141 forum/models.py:50 forum/models.py:186
+#: counter/models.py:141 election/models.py:14 election/models.py:99
+#: election/models.py:155 forum/models.py:50 forum/models.py:186
 msgid "description"
 msgstr "description"
 
@@ -1312,8 +1314,8 @@ msgstr "Hebdomadaire"
 msgid "Call"
 msgstr "Appel"
 
-#: com/models.py:63 com/models.py:127 com/models.py:175 election/models.py:12
-#: election/models.py:92 election/models.py:128 forum/models.py:189
+#: com/models.py:63 com/models.py:127 com/models.py:175 election/models.py:13
+#: election/models.py:98 election/models.py:134 forum/models.py:189
 #: forum/models.py:237
 msgid "title"
 msgstr "titre"
@@ -2001,7 +2003,7 @@ msgstr "Un utilisateur de ce nom d'utilisateur existe déjà"
 #: core/templates/core/user_detail.jinja:14
 #: core/templates/core/user_detail.jinja:16
 #: core/templates/core/user_edit.jinja:17
-#: election/templates/election/election_detail.jinja:317
+#: election/templates/election/election_detail.jinja:340
 #: forum/templates/forum/macros.jinja:93 forum/templates/forum/macros.jinja:95
 #: forum/templates/forum/reply.jinja:38 forum/templates/forum/reply.jinja:40
 #: trombi/templates/trombi/user_tools.jinja:41
@@ -3273,67 +3275,67 @@ msgstr "clients"
 msgid "Not enough money"
 msgstr "Solde insuffisant"
 
-#: counter/models.py:118 counter/models.py:141
+#: counter/models.py:119 counter/models.py:142
 msgid "product type"
 msgstr "type du produit"
 
-#: counter/models.py:144
+#: counter/models.py:145
 msgid "purchase price"
 msgstr "prix d'achat"
 
-#: counter/models.py:145
+#: counter/models.py:146
 msgid "selling price"
 msgstr "prix de vente"
 
-#: counter/models.py:146
+#: counter/models.py:147
 msgid "special selling price"
 msgstr "prix de vente spécial"
 
-#: counter/models.py:147
+#: counter/models.py:148
 msgid "icon"
 msgstr "icône"
 
-#: counter/models.py:149
+#: counter/models.py:150
 msgid "limit age"
 msgstr "âge limite"
 
-#: counter/models.py:150
+#: counter/models.py:151
 msgid "tray price"
 msgstr "prix plateau"
 
-#: counter/models.py:151
+#: counter/models.py:152
 msgid "parent product"
 msgstr "produit parent"
 
-#: counter/models.py:153
+#: counter/models.py:154
 msgid "buying groups"
 msgstr "groupe d'achat"
 
-#: counter/models.py:154 election/models.py:36
+#: counter/models.py:155 election/models.py:37
 msgid "archived"
 msgstr "archivé"
 
-#: counter/models.py:157 counter/models.py:566
+#: counter/models.py:158 counter/models.py:567
 msgid "product"
 msgstr "produit"
 
-#: counter/models.py:185
+#: counter/models.py:186
 msgid "products"
 msgstr "produits"
 
-#: counter/models.py:186
+#: counter/models.py:187
 msgid "counter type"
 msgstr "type de comptoir"
 
-#: counter/models.py:188
+#: counter/models.py:189
 msgid "Bar"
 msgstr "Bar"
 
-#: counter/models.py:188
+#: counter/models.py:189
 msgid "Office"
 msgstr "Bureau"
 
-#: counter/models.py:188 counter/templates/counter/counter_list.jinja:11
+#: counter/models.py:189 counter/templates/counter/counter_list.jinja:11
 #: eboutic/templates/eboutic/eboutic_main.jinja:4
 #: eboutic/templates/eboutic/eboutic_main.jinja:24
 #: eboutic/templates/eboutic/eboutic_makecommand.jinja:8
@@ -3342,62 +3344,62 @@ msgstr "Bureau"
 msgid "Eboutic"
 msgstr "Eboutic"
 
-#: counter/models.py:189
+#: counter/models.py:190
 msgid "sellers"
 msgstr "vendeurs"
 
-#: counter/models.py:192 launderette/models.py:151
+#: counter/models.py:193 launderette/models.py:151
 msgid "token"
 msgstr "jeton"
 
-#: counter/models.py:195 counter/models.py:464 counter/models.py:482
+#: counter/models.py:196 counter/models.py:465 counter/models.py:483
 #: launderette/models.py:39 stock/models.py:39
 msgid "counter"
 msgstr "comptoir"
 
-#: counter/models.py:303
+#: counter/models.py:304
 msgid "bank"
 msgstr "banque"
 
-#: counter/models.py:305 counter/models.py:353
+#: counter/models.py:306 counter/models.py:354
 msgid "is validated"
 msgstr "est validé"
 
-#: counter/models.py:308
+#: counter/models.py:309
 msgid "refilling"
 msgstr "rechargement"
 
-#: counter/models.py:346 eboutic/models.py:129
+#: counter/models.py:347 eboutic/models.py:129
 msgid "unit price"
 msgstr "prix unitaire"
 
-#: counter/models.py:347 counter/models.py:555 eboutic/models.py:130
+#: counter/models.py:348 counter/models.py:556 eboutic/models.py:130
 msgid "quantity"
 msgstr "quantité"
 
-#: counter/models.py:352
+#: counter/models.py:353
 msgid "Sith account"
 msgstr "Compte utilisateur"
 
-#: counter/models.py:352 sith/settings.py:368 sith/settings.py:373
+#: counter/models.py:353 sith/settings.py:368 sith/settings.py:373
 #: sith/settings.py:395
 msgid "Credit card"
 msgstr "Carte bancaire"
 
-#: counter/models.py:356
+#: counter/models.py:357
 msgid "selling"
 msgstr "vente"
 
-#: counter/models.py:375
+#: counter/models.py:376
 msgid "Unknown event"
 msgstr "Événement inconnu"
 
-#: counter/models.py:376
+#: counter/models.py:377
 #, python-format
 msgid "Eticket bought for the event %(event)s"
 msgstr "Eticket acheté pour l'événement %(event)s"
 
-#: counter/models.py:378 counter/models.py:390
+#: counter/models.py:379 counter/models.py:391
 #, python-format
 msgid ""
 "You bought an eticket for the event %(event)s.\n"
@@ -3406,51 +3408,51 @@ msgstr ""
 "Vous avez acheté un Eticket pour l'événement %(event)s.\n"
 "Vous pouvez le télécharger sur cette page: %(url)s"
 
-#: counter/models.py:467
+#: counter/models.py:468
 msgid "last activity date"
 msgstr "dernière activité"
 
-#: counter/models.py:470
+#: counter/models.py:471
 msgid "permanency"
 msgstr "permanence"
 
-#: counter/models.py:485
+#: counter/models.py:486
 msgid "emptied"
 msgstr "coffre vidée"
 
-#: counter/models.py:488
+#: counter/models.py:489
 msgid "cash register summary"
 msgstr "relevé de caisse"
 
-#: counter/models.py:553
+#: counter/models.py:554
 msgid "cash summary"
 msgstr "relevé"
 
-#: counter/models.py:554
+#: counter/models.py:555
 msgid "value"
 msgstr "valeur"
 
-#: counter/models.py:556
+#: counter/models.py:557
 msgid "check"
 msgstr "chèque"
 
-#: counter/models.py:559
+#: counter/models.py:560
 msgid "cash register summary item"
 msgstr "élément de relevé de caisse"
 
-#: counter/models.py:567
+#: counter/models.py:568
 msgid "banner"
 msgstr "bannière"
 
-#: counter/models.py:568
+#: counter/models.py:569
 msgid "event date"
 msgstr "date de l'événement"
 
-#: counter/models.py:569
+#: counter/models.py:570
 msgid "event title"
 msgstr "titre de l'événement"
 
-#: counter/models.py:570
+#: counter/models.py:571
 msgid "secret"
 msgstr "secret"
 
@@ -3906,49 +3908,49 @@ msgstr "Retourner à l'eboutic"
 msgid "You do not have enough money to buy the basket"
 msgstr "Vous n'avez pas assez d'argent pour acheter le panier"
 
-#: election/models.py:14
+#: election/models.py:15
 msgid "start candidature"
 msgstr "début des candidatures"
 
-#: election/models.py:15
+#: election/models.py:16
 msgid "end candidature"
 msgstr "fin des candidatures"
 
-#: election/models.py:21
+#: election/models.py:22
 msgid "edit groups"
 msgstr "groupe d'édition"
 
-#: election/models.py:25
+#: election/models.py:26
 msgid "view groups"
 msgstr "groupe de vue"
 
-#: election/models.py:29
+#: election/models.py:30
 msgid "vote groups"
 msgstr "groupe de vote"
 
-#: election/models.py:33
+#: election/models.py:34
 msgid "candidature groups"
 msgstr "groupe de candidature"
 
-#: election/models.py:91 election/models.py:129
+#: election/models.py:97 election/models.py:135
 msgid "election"
 msgstr "élection"
 
-#: election/models.py:94
+#: election/models.py:100
 msgid "max choice"
 msgstr "nombre de choix maxi"
 
-#: election/models.py:142
+#: election/models.py:156
 msgid "election list"
 msgstr "liste électorale"
 
-#: election/models.py:156
+#: election/models.py:174
 msgid "candidature"
 msgstr "candidature"
 
 #: election/templates/election/candidate_form.jinja:4
 #: election/templates/election/candidate_form.jinja:13
-#: election/templates/election/election_detail.jinja:366
+#: election/templates/election/election_detail.jinja:389
 msgid "Candidate"
 msgstr "Candidater"
 
@@ -3994,40 +3996,50 @@ msgstr "Vous avez déjà voté pour cette élection."
 msgid "Blank vote"
 msgstr "Vote blanc"
 
-#: election/templates/election/election_detail.jinja:284
+#: election/templates/election/election_detail.jinja:307
 msgid "You may choose up to"
 msgstr "Vous pouvez choisir jusqu'à"
 
-#: election/templates/election/election_detail.jinja:284
+#: election/templates/election/election_detail.jinja:307
 msgid "people."
 msgstr "personne(s)"
 
-#: election/templates/election/election_detail.jinja:298
+#: election/templates/election/election_detail.jinja:321
 msgid "Choose blank vote"
 msgstr "Choisir de voter blanc"
 
-#: election/templates/election/election_detail.jinja:305
-#: election/templates/election/election_detail.jinja:345
+#: election/templates/election/election_detail.jinja:328
+#: election/templates/election/election_detail.jinja:368
 msgid "votes"
 msgstr "votes"
 
-#: election/templates/election/election_detail.jinja:338
+#: election/templates/election/election_detail.jinja:361
 #: launderette/templates/launderette/launderette_book.jinja:12
 msgid "Choose"
 msgstr "Choisir"
 
-#: election/templates/election/election_detail.jinja:361
+#: election/templates/election/election_detail.jinja:384
 msgid "Submit the vote !"
 msgstr "Envoyer le vote !"
 
-#: election/templates/election/election_detail.jinja:369
+#: election/templates/election/election_detail.jinja:392
 msgid "Add a new list"
 msgstr "Ajouter une nouvelle liste"
 
-#: election/templates/election/election_detail.jinja:373
+#: election/templates/election/election_detail.jinja:396
 msgid "Add a new role"
 msgstr "Ajouter un nouveau rôle"
 
+#: election/templates/election/election_detail.jinja:411
+#: election/templates/election/election_detail.jinja:415
+msgid "Show more"
+msgstr "Montrer plus"
+
+#: election/templates/election/election_detail.jinja:412
+#: election/templates/election/election_detail.jinja:416
+msgid "Show less"
+msgstr "Montrer moins"
+
 #: election/templates/election/election_list.jinja:5
 msgid "Election list"
 msgstr "Liste des élections"
diff --git a/requirements.txt b/requirements.txt
index c17b56b8..b94274f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,5 +13,6 @@ django-haystack
 whoosh
 django-debug-toolbar
 libsass
+django-ordered-model
 pygraphviz
 # mysqlclient