try copying from niols

deployment/check/basic/nixosTest.nix

@@ -11,6 +11,7 @@ testers.runNixOSTest (
   let
     sources = import ../../../npins;
     pkgs = hostPkgs;
+    dummyFile = hostPkgs.writeText "dummy" "";
     tf = pkgs.callPackage ../../../launch/tf.nix { };
     tfEnv = pkgs.callPackage ../../../launch/tf-env.nix { };
     inherit (pkgs) lib;
@@ -85,6 +86,11 @@ testers.runNixOSTest (
                 pkgs.autoconf
                 pkgs.automake
                 pkgs.python3
+
+                pkgs.peertube
+                pkgs.peertube.inputDerivation
+                pkgs.gixy
+                pkgs.gixy.inputDerivation
               ]
               ++ lib.concatLists (
                 map (tm: extraDependenciesFromMachine nodes.${tm}) (targetMachines ++ [ "fake" ])
@@ -94,7 +100,41 @@ testers.runNixOSTest (
               tfEnv
             ];
           };
-        fake.imports = [ ../basic/minimalTarget.nix ];
+
+        fake = {
+          imports = [
+            ../basic/minimalTarget.nix
+            ../../../services/fediversity
+          ];
+          fediversity = {
+            domain = "dummy";
+            garage.enable = true;
+            mastodon = {
+              enable = true;
+              s3AccessKeyFile = dummyFile;
+              s3SecretKeyFile = dummyFile;
+            };
+            peertube = {
+              enable = true;
+              secretsFile = dummyFile;
+              s3AccessKeyFile = dummyFile;
+              s3SecretKeyFile = dummyFile;
+            };
+            pixelfed = {
+              enable = true;
+              s3AccessKeyFile = dummyFile;
+              s3SecretKeyFile = dummyFile;
+            };
+            temp.cores = 1;
+            temp.initialUser = {
+              username = "dummy";
+              displayName = "dummy";
+              email = "dummy";
+              passwordFile = dummyFile;
+            };
+          };
+
+        };
       }
       // lib.genAttrs targetMachines (_: {
         imports = [ ../basic/minimalTarget.nix ];