fix[server]: get cache working

modules/home/common/env.nix

@@ -16,6 +16,7 @@ in
     } // (lib.optionalAttrs (!isPublic) { });
     systemd.user.sessionVariables = {
       DOCUMENT_DIR_PRIV = lib.mkForce "${homeDir}/Documents/Private";
+      FLAKE = "${config.home.homeDirectory}/.dotfiles";
     } // lib.optionalAttrs (!isPublic) {
       SWARSEL_MAIL1 = address1;
       SWARSEL_MAIL2 = address2;

modules/home/common/packages.nix

@@ -25,6 +25,9 @@
       # ssh login using idm
       opkssh
 
+      # cache
+      attic-client
+
       # dict
       (aspellWithDicts (dicts: with dicts; [ de en en-computers en-science ]))
 

modules/home/common/settings.nix

@@ -1,6 +1,7 @@
-{ self, outputs, lib, pkgs, config, ... }:
+{ self, outputs, lib, pkgs, config, globals, nixosConfig ? config, ... }:
 let
   inherit (config.swarselsystems) mainUser flakePath isNixos isLinux;
+  inherit (nixosConfig.repo.secrets.common) atticPublicKey;
 in
 {
   options.swarselmodules.general = lib.mkEnableOption "general nix settings";
@@ -33,6 +34,12 @@ in
             "cgroups"
             "pipe-operators"
           ];
+          substituters = [
+            "https://${globals.services.attic.domain}/${mainUser}"
+          ];
+          trusted-public-keys = [
+            atticPublicKey
+          ];
           trusted-users = [ "@wheel" "${mainUser}" ];
           connect-timeout = 5;
           bash-prompt-prefix = "$SHLVL:\\w ";