diff --git a/system/system_test.go b/system/system_test.go
index cbe3dfc..3ab6c13 100644
--- a/system/system_test.go
+++ b/system/system_test.go
@@ -1,35 +1,28 @@
-package system_test
+package system
 
 import (
-	"reflect"
 	"strconv"
 	"testing"
-	_ "unsafe"
-
-	"hakurei.app/system"
 )
 
-//go:linkname criteriaHasType hakurei.app/system.(*Criteria).hasType
-func criteriaHasType(_ *system.Criteria, _ system.Enablement) bool
-
 func TestCriteria(t *testing.T) {
 	testCases := []struct {
 		name  string
-		ec, t system.Enablement
+		ec, t Enablement
 		want  bool
 	}{
-		{"nil", 0xff, system.EWayland, true},
-		{"nil user", 0xff, system.User, false},
-		{"all", system.EWayland | system.EX11 | system.EDBus | system.EPulse | system.User | system.Process, system.Process, true},
+		{"nil", 0xff, EWayland, true},
+		{"nil user", 0xff, User, false},
+		{"all", EWayland | EX11 | EDBus | EPulse | User | Process, Process, true},
 	}
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			var criteria *system.Criteria
+			var criteria *Criteria
 			if tc.ec != 0xff {
-				criteria = (*system.Criteria)(&tc.ec)
+				criteria = (*Criteria)(&tc.ec)
 			}
-			if got := criteriaHasType(criteria, tc.t); got != tc.want {
+			if got := criteria.hasType(tc.t); got != tc.want {
 				t.Errorf("hasType: got %v, want %v",
 					got, tc.want)
 			}
@@ -39,23 +32,23 @@ func TestCriteria(t *testing.T) {
 
 func TestTypeString(t *testing.T) {
 	testCases := []struct {
-		e    system.Enablement
+		e    Enablement
 		want string
 	}{
-		{system.EWayland, system.EWayland.String()},
-		{system.EX11, system.EX11.String()},
-		{system.EDBus, system.EDBus.String()},
-		{system.EPulse, system.EPulse.String()},
-		{system.User, "user"},
-		{system.Process, "process"},
-		{system.User | system.Process, "user, process"},
-		{system.EWayland | system.User | system.Process, "wayland, user, process"},
-		{system.EX11 | system.Process, "x11, process"},
+		{EWayland, EWayland.String()},
+		{EX11, EX11.String()},
+		{EDBus, EDBus.String()},
+		{EPulse, EPulse.String()},
+		{User, "user"},
+		{Process, "process"},
+		{User | Process, "user, process"},
+		{EWayland | User | Process, "wayland, user, process"},
+		{EX11 | Process, "x11, process"},
 	}
 
 	for _, tc := range testCases {
 		t.Run("label type string "+strconv.Itoa(int(tc.e)), func(t *testing.T) {
-			if got := system.TypeString(tc.e); got != tc.want {
+			if got := TypeString(tc.e); got != tc.want {
 				t.Errorf("TypeString: %q, want %q", got, tc.want)
 			}
 		})
@@ -71,7 +64,7 @@ func TestNew(t *testing.T) {
 					t.Errorf("recover: %v, want %v", r, want)
 				}
 			}()
-			system.New(nil, 0)
+			New(nil, 0)
 		})
 
 		t.Run("uid", func(t *testing.T) {
@@ -81,13 +74,13 @@ func TestNew(t *testing.T) {
 					t.Errorf("recover: %v, want %v", r, want)
 				}
 			}()
-			system.New(t.Context(), -1)
+			New(t.Context(), -1)
 		})
 	})
 
-	sys := system.New(t.Context(), 0xdeadbeef)
-	if got := reflect.ValueOf(sys).Elem().FieldByName("ctx"); got.IsNil() {
-		t.Errorf("New: ctx = %#v", got)
+	sys := New(t.Context(), 0xdeadbeef)
+	if sys.ctx == nil {
+		t.Error("New: ctx = nil")
 	}
 	if got := sys.UID(); got != 0xdeadbeef {
 		t.Errorf("UID: %d", got)
@@ -97,56 +90,56 @@ func TestNew(t *testing.T) {
 func TestEqual(t *testing.T) {
 	testCases := []struct {
 		name string
-		sys  *system.I
-		v    *system.I
+		sys  *I
+		v    *I
 		want bool
 	}{
 		{"simple UID",
-			system.New(t.Context(), 150),
-			system.New(t.Context(), 150),
+			New(t.Context(), 150),
+			New(t.Context(), 150),
 			true},
 
 		{"simple UID differ",
-			system.New(t.Context(), 150),
-			system.New(t.Context(), 151),
+			New(t.Context(), 150),
+			New(t.Context(), 151),
 			false},
 
 		{"simple UID nil",
-			system.New(t.Context(), 150),
+			New(t.Context(), 150),
 			nil,
 			false},
 
 		{"op length mismatch",
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos"),
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				Ensure("/run", 0755),
 			false},
 
 		{"op value mismatch",
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				Ensure("/run", 0644),
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				Ensure("/run", 0755),
 			false},
 
 		{"op type mismatch",
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				CopyFile(new([]byte), "/home/ophestra/xdg/config/pulse/cookie", 0, 256),
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				Ensure("/run", 0755),
 			false},
 
 		{"op equals",
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				Ensure("/run", 0755),
-			system.New(t.Context(), 150).
+			New(t.Context(), 150).
 				ChangeHosts("chronos").
 				Ensure("/run", 0755),
 			true},