diff --git a/tests/driver-linux.nix b/tests/driver-linux.nix
index e05052a..2f29d2e 100644
--- a/tests/driver-linux.nix
+++ b/tests/driver-linux.nix
@@ -36,7 +36,7 @@ let
       '';
     };
 
-  makeTest = { name ? "unamed", testScript, testConfig, bootModules, ... }@t:
+  mkTest = { name ? "unamed", testScript, testConfig, bootModules, ... }@t:
     with testPkgs;
     let
       bootModules' = {
@@ -85,8 +85,12 @@ let
 
 in {
   callTest = path: args:
-    makeTest (import path ({
+    (import path ({
+      testEnv = {
+        inherit mkTest lib;
+        isLinux = true;
+        isNova = false;
+      };
       pkgs = testPkgs;
-      inherit lib;
     } // args));
 }
diff --git a/tests/driver-nova.nix b/tests/driver-nova.nix
index a33d6cc..91ce92e 100644
--- a/tests/driver-nova.nix
+++ b/tests/driver-nova.nix
@@ -41,8 +41,8 @@ let
     coreNovaObj = "${testPkgs.depot.base-nova}/lib/core-nova.o";
   };
 
-  makeTest = { name ? "unamed", testScript, testConfig, bootModules
-    , qemuMem ? 32, ... }@t:
+  mkTest = { name ? "unamed", testScript, testConfig, bootModules, qemuMem ? 32
+    , ... }@t:
     let
       iso = mkIso (with testPkgs;
         {
@@ -130,12 +130,19 @@ let
 
       test = passMeta (runTests driver);
 
-    in test // { inherit driver iso test; config = testConfig; };
+    in test // {
+      inherit driver iso test;
+      config = testConfig;
+    };
 
 in {
   callTest = path: args:
-    makeTest (import path ({
+    (import path ({
+      testEnv = {
+        inherit mkTest lib;
+        isLinux = false;
+        isNova = true;
+      };
       pkgs = testPkgs;
-      inherit lib;
     } // args));
 }
diff --git a/tests/fs_report.nix b/tests/fs_report.nix
index e2f0447..de32281 100644
--- a/tests/fs_report.nix
+++ b/tests/fs_report.nix
@@ -1,7 +1,7 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-{
+testEnv.mkTest {
   name = "fs_report";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
diff --git a/tests/libc.nix b/tests/libc.nix
index d10b28f..14203f0 100644
--- a/tests/libc.nix
+++ b/tests/libc.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-rec {
+testEnv.mkTest rec {
   name = "libc";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
-  testConfig = lib.renderDhallInit ./libc.dhall "{=}";
+  testConfig = testEnv.lib.renderDhallInit ./libc.dhall "{=}";
 
   bootModules = {
     "libc.lib.so" = "${depot.libc}/lib/libc.lib.so";
diff --git a/tests/log.nix b/tests/log.nix
index d1c4e3b..db5528a 100644
--- a/tests/log.nix
+++ b/tests/log.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-rec {
+testEnv.mkTest rec {
   name = "log";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
-  testConfig = lib.renderDhallInit ./log.dhall "{=}";
+  testConfig = testEnv.lib.renderDhallInit ./log.dhall "{=}";
 
   bootModules.test-log = "${depot.test-log}/bin/test-log";
 
diff --git a/tests/pci.nix b/tests/pci.nix
index dde7b24..b29e9e5 100644
--- a/tests/pci.nix
+++ b/tests/pci.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-{
+testEnv.mkTest {
   name = "pci";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
-  testConfig = lib.renderDhallInit ./pci.dhall "{=}";
+  testConfig = testEnv.lib.renderDhallInit ./pci.dhall "{=}";
 
   bootModules = {
     acpi_drv = "${genode.os}/bin/acpi_drv";
diff --git a/tests/signal.nix b/tests/signal.nix
index 6ab902d..a01c1ac 100644
--- a/tests/signal.nix
+++ b/tests/signal.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-rec {
+testEnv.mkTest rec {
   name = "signal";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
-  testConfig = lib.renderDhallInit ./signal.dhall "{=}";
+  testConfig = testEnv.lib.renderDhallInit ./signal.dhall "{=}";
 
   bootModules.test-signal = "${depot.test-signal}/bin/test-signal";
 
diff --git a/tests/solo5-ping.nix b/tests/solo5-ping.nix
index ea61554..bcf98ce 100644
--- a/tests/solo5-ping.nix
+++ b/tests/solo5-ping.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-rec {
+testEnv.mkTest rec {
   name = "solo5";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
-  testConfig = lib.renderDhallInit ./solo5-ping.dhall "{=}";
+  testConfig = testEnv.lib.renderDhallInit ./solo5-ping.dhall "{=}";
 
   bootModules = {
     nic_bridge = "${genode.os}/bin/nic_bridge";
diff --git a/tests/solo5.nix b/tests/solo5.nix
index 6372c57..ca521ff 100644
--- a/tests/solo5.nix
+++ b/tests/solo5.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib }:
+{ testEnv, pkgs }:
 with pkgs;
 
-rec {
+testEnv.mkTest rec {
   name = "solo5";
   meta.maintainers = with pkgs.stdenv.lib.maintainers; [ ehmry ];
 
-  testConfig = lib.renderDhallInit ./solo5.dhall "{=}";
+  testConfig = testEnv.lib.renderDhallInit ./solo5.dhall "{=}";
 
   bootModules = {
     sequence = "${genode.os}/bin/sequence";