diff --git a/overlays/neovim.nix b/overlays/neovim.nix
index 48d8531..bb9a6ea 100644
--- a/overlays/neovim.nix
+++ b/overlays/neovim.nix
@@ -9,11 +9,13 @@ self: super:
         set softtabstop=2
         set expandtab
         set background=dark
+        let g:deoplete#enable_at_startup = 1
       '';
       packages.myVimPackage = with super.vimPlugins; {
         start = [
           vim-startify  airline             sensible
           polyglot      ale                 fugitive
+          deoplete-nvim
         ];
         opt = [ ];
       };
diff --git a/overlays/unstable_pkgs.nix b/overlays/unstable_pkgs.nix
new file mode 100644
index 0000000..175f7b5
--- /dev/null
+++ b/overlays/unstable_pkgs.nix
@@ -0,0 +1,7 @@
+self: super:
+let
+  unstable = import (fetchTarball https://github.com/NixOS/nixpkgs-channels/archive/nixos-unstable.tar.gz) {};
+in
+{
+  unstable-pkgs = unstable;
+}
diff --git a/services/auto-pr.nix b/services/auto-pr.nix
deleted file mode 100644
index 0ac765c..0000000
--- a/services/auto-pr.nix
+++ /dev/null
@@ -1,44 +0,0 @@
-{lib, config, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.services.auto-pr;
-in
-{
-  options.services.auto-pr = {
-    enable = mkEnableOption "Cron job PR mise à jour automatique";
-  };
-
-  config = mkIf cfg.enable {
-
-    systemd.services.auto-pr-bot = {
-      description = "Création d'un PR si mise à jour";
-      requires = ["network-online.target"];
-      environment = { HOME = "/var/lib/auto-pr-bot"; };
-      serviceConfig = {
-        DynamicUser = true;
-        CacheDirectory = "auto-pr-bot";
-        StateDirectory = "auto-pr-bot";
-        Type = "oneshot";
-        ExecStart = with pkgs;
-          let env = python3Packages.python.buildEnv.override {
-            extraLibs = [ python3Packages.PyGithub python3Packages.pyjwt python3Packages.colorama ];
-            ignoreCollisions = true;
-          };
-        in "${pkgs.writeShellScriptBin "run.sh" ''
-          ${env}/bin/python ${pkgs.writeScript "pr-autobot.py" "${readFile ./pr-autobot.py}"} --private-key /var/lib/auto-pr-bot/private-key.pem --app-id 19565 --installation-id 407088 --repo nyanloutre/nixpkgs --cache-dir /var/cache/auto-pr-bot
-        ''}/bin/run.sh";
-      };
-    };
-
-    systemd.timers.auto-pr-bot = {
-      description = "Timer auto PR bot";
-      requires = ["network-online.target"];
-      wantedBy = ["multi-user.target"];
-      timerConfig = { OnCalendar = "daily"; Unit = "auto-pr-bot.service"; };
-    };
-
-  };
-
-}
diff --git a/services/pr-autobot.py b/services/pr-autobot.py
deleted file mode 100755
index 26c313c..0000000
--- a/services/pr-autobot.py
+++ /dev/null
@@ -1,67 +0,0 @@
-#!/usr/bin/env python
-
-import jwt, time, urllib.request, json, datetime, argparse, sys, textwrap
-from github import Github
-from colorama import Fore, Style
-
-parser = argparse.ArgumentParser(description='Create PR to update nixpkgs fork')
-parser.add_argument('--private-key')
-parser.add_argument('--app-id')
-parser.add_argument('--installation-id')
-parser.add_argument('--repo')
-parser.add_argument('--cache-dir')
-args = vars(parser.parse_args())
-
-channel_req = urllib.request.Request(url='https://nixos.org/channels/nixos-18.09-small/git-revision')
-latest_commit = urllib.request.urlopen(channel_req).read().decode('utf-8')
-try:
-    previous_commit = open(args['cache_dir'] + '/git-revision', 'r').read()
-except FileNotFoundError:
-    open(args['cache_dir'] + '/git-revision', 'w').write(latest_commit)
-    print("Premier lancement, le hash du dernier commit à été sauvegardé")
-    sys.exit(0)
-
-print("Dernier commit : " + latest_commit)
-print("Commit précédent : " + previous_commit)
-
-if latest_commit != previous_commit:
-    bearer_token = jwt.encode({
-                                'iat': int(time.time()),
-                                'exp': int(time.time()) + (10 * 60),
-                                'iss': args['app_id']
-                              },
-                              open(args['private_key'],"r").read(),
-                              algorithm='RS256')
-
-    req = urllib.request.Request(url='https://api.github.com/app/installations/' +
-                                    args['installation_id'] +
-                                    '/access_tokens',
-                                 method='POST')
-
-    req.add_header('Authorization', 'Bearer ' + bearer_token.decode('utf-8'))
-    req.add_header('Accept', 'application/vnd.github.machine-man-preview+json')
-
-    token = json.loads(urllib.request.urlopen(req).read().decode('utf-8'))['token']
-
-    g = Github(token)
-    repo = g.get_repo(args['repo'])
-
-    branch = "upgrade-" + datetime.datetime.now().strftime('%Y-%m-%d') + '-' + latest_commit[:11];
-
-    repo.create_git_ref('refs/heads/' + branch, latest_commit)
-
-    pr_message = textwrap.dedent("""\
-                    ### Pull request automatique
-                    ### Avancement mise à jour
-                    - [ ] Fusionner la branche
-                    - [ ] Mettre à jour le repo local
-                    - [ ] Exécuter `nixos-rebuild -I nixpkgs=https://github.com/nyanloutre/nixpkgs/archive/""" + latest_commit + """.tar.gz switch`
-                 """)
-
-    pr = repo.create_pull(title=branch, body=pr_message, base='nixos-18.09', head=branch)
-
-    print("Pull request numéro " + pr.id + " créée")
-    print("URL : " + pr.html_url)
-    print("État : " + ((Fore.GREEN + "Fusionnable") if pr.mergeable else (Fore.RED + "Conflit")) + Style.RESET_ALL)
-else:
-    print(Fore.GREEN + "Aucun changement détecté" + Style.RESET_ALL)
diff --git a/services/site-max.nix b/services/site-max.nix
index f5cccbe..95132dc 100644
--- a/services/site-max.nix
+++ b/services/site-max.nix
@@ -66,7 +66,7 @@ in
             git -C $GIT_CLONE_DIR pull
           fi
 
-          NIXPKGS_ALLOW_UNFREE=1 nix-build -o /run/site-max/result $GIT_CLONE_DIR
+          nix-build -o /run/site-max/result $GIT_CLONE_DIR
         ''}/bin/build.sh";
       };
     };
diff --git a/systems/LoutreOS/configuration.nix b/systems/LoutreOS/configuration.nix
index bdcffc4..c5002c7 100644
--- a/systems/LoutreOS/configuration.nix
+++ b/systems/LoutreOS/configuration.nix
@@ -35,6 +35,7 @@
 
   nixpkgs.overlays = [
     (import ../../overlays/riot-web.nix)
+    (import ../../overlays/unstable_pkgs.nix)
   ];
 
   services.openssh = {
diff --git a/systems/LoutreOS/services.nix b/systems/LoutreOS/services.nix
index c785a5d..727e23f 100644
--- a/systems/LoutreOS/services.nix
+++ b/systems/LoutreOS/services.nix
@@ -17,7 +17,6 @@ in
     ../../services/mail-server.nix
     ../../services/site-musique.nix
     ../../services/site-max.nix
-    ../../services/auto-pr.nix
     ../../containers/vsftpd.nix
   ];
 
@@ -213,6 +212,7 @@ in
 
     matrix-synapse = {
       enable = true;
+      package = pkgs.unstable-pkgs.matrix-synapse;
       enable_registration = true;
       server_name = "nyanlout.re";
       listeners = [
@@ -354,8 +354,6 @@ in
       port = max_port;
       domaine = "maxspiegel.fr";
     };
-
-    auto-pr.enable = true;
   };
 
   /*