From e086914ce0cbe09a100475149ae9730b58d1222d Mon Sep 17 00:00:00 2001
From: makefu <github@syntax-fehler.de>
Date: Thu, 25 May 2017 23:21:20 +0200
Subject: s: enable save-diskspace

---
 shared/1systems/wolf.nix           |  2 ++
 shared/2configs/default.nix        |  2 +-
 shared/2configs/save-diskspace.nix | 11 +++++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 shared/2configs/save-diskspace.nix

diff --git a/shared/1systems/wolf.nix b/shared/1systems/wolf.nix
index ebe393c90..c6cc2f81c 100644
--- a/shared/1systems/wolf.nix
+++ b/shared/1systems/wolf.nix
@@ -15,6 +15,7 @@ in
     ../2configs/shared-buildbot.nix
     ../2configs/share-shack.nix
     ../2configs/central-stats-client.nix
+    ../2configs/save-diskspace.nix
   ];
   # use your own binary cache, fallback use cache.nixos.org (which is used by
   # apt-cacher-ng in first place)
@@ -86,4 +87,5 @@ in
   ];
 
   time.timeZone = "Europe/Berlin";
+  sound.enable = false;
 }
diff --git a/shared/2configs/default.nix b/shared/2configs/default.nix
index e7f600cd0..894f8a997 100644
--- a/shared/2configs/default.nix
+++ b/shared/2configs/default.nix
@@ -11,7 +11,7 @@ with import <stockholm/lib>;
     nixos-config.symlink = "stockholm/${user.name}/1systems/${host.name}.nix";
     nixpkgs.git = {
       url = https://github.com/NixOS/nixpkgs;
-      ref = "22da5d02466ffe465735986d705675982f3646a0"; # nixos-17.03 @ 2017-05-13
+      ref = "58e227052d40021d82d015f3f8da011ae54ea430"; # nixos-17.03 @ 2017-05-24
     };
     secrets.file =
       if getEnv "dummy_secrets" == "true"
diff --git a/shared/2configs/save-diskspace.nix b/shared/2configs/save-diskspace.nix
new file mode 100644
index 000000000..ab074c750
--- /dev/null
+++ b/shared/2configs/save-diskspace.nix
@@ -0,0 +1,11 @@
+{lib, ... }:
+# TODO: do not check out nixpkgs master but fetch revision from github
+{
+  environment.noXlibs = true;
+  nix.gc.automatic = true;
+  nix.gc.dates = lib.mkDefault "03:10";
+  programs.info.enable = false;
+  programs.man.enable = false;
+  services.journald.extraConfig = "SystemMaxUse=50M";
+  services.nixosManual.enable = false;
+}
-- 
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