remove clanDir default

The default value for clanDir did not make sense, as it pointed to the directory of the module definition

Also, we should not have a default at this level as all.

checks/backups/flake-module.nix

@@ -133,6 +133,7 @@
               self.nixosModules.test-backup
             ];
             virtualisation.emptyDiskImages = [ 256 ];
+            clan.core.clanDir = ./.;
           };
 
           testScript = ''

checks/postgresql/default.nix

@@ -13,6 +13,7 @@
       clan.postgresql.databases.test.create.options.OWNER = "test";
       clan.postgresql.databases.test.restore.stopOnRestore = [ "sample-service" ];
       clan.localbackup.targets.hdd.directory = "/mnt/external-disk";
+      clan.core.clanDir = ./.;
 
       systemd.services.sample-service = {
         wantedBy = [ "multi-user.target" ];

clanModules/borgbackup-static/default.nix

@@ -3,7 +3,9 @@ let
   clanDir = config.clan.core.clanDir;
   machineDir = clanDir + "/machines/";
 in
-lib.warn "This module is deprecated use the service via the inventory interface instead." {
+lib.warn
+  "The borgbackup-static module is deprecated use the service via the inventory interface instead."
+  {
     imports = [ ../borgbackup ];
 
     options.clan.borgbackup-static = {

nixosModules/clanCore/metadata.nix

@@ -45,7 +45,6 @@
     };
     clanDir = lib.mkOption {
       type = lib.types.path;
-      default = ./.;
       description = ''
         the location of the flake repo, used to calculate the location of facts and secrets
       '';