1 files changed, 50 insertions, 0 deletions
diff --git a/system/deprecated.go b/system/deprecated.go
new file mode 100644
index 00000000..3f0a423d
--- /dev/null
+++ b/system/deprecated.go
@@ -0,0 +1,50 @@
+// Package system exposes the internal/system package.
+//
+// Deprecated: This package will be removed in 0.4.
+package system
+
+import (
+	"context"
+	_ "unsafe" // for go:linkname
+
+	"hakurei.app/hst"
+	"hakurei.app/internal/system"
+	"hakurei.app/message"
+)
+
+// ErrDBusConfig is returned when a required hst.BusConfig argument is nil.
+//
+//go:linkname ErrDBusConfig hakurei.app/internal/system.ErrDBusConfig
+var ErrDBusConfig error
+
+// OpError is returned by [I.Commit] and [I.Revert].
+type OpError = system.OpError
+
+const (
+	// User type is reverted at final instance exit.
+	User = system.User
+	// Process type is unconditionally reverted on exit.
+	Process = system.Process
+
+	CM = system.CM
+)
+
+// Criteria specifies types of Op to revert.
+type Criteria = system.Criteria
+
+// Op is a reversible system operation.
+type Op = system.Op
+
+// TypeString extends [Enablement.String] to support [User] and [Process].
+//
+//go:linkname TypeString hakurei.app/internal/system.TypeString
+func TypeString(e hst.Enablement) string
+
+// New returns the address of a new [I] targeting uid.
+//
+//go:linkname New hakurei.app/internal/system.New
+func New(ctx context.Context, msg message.Msg, uid int) (sys *I)
+
+// An I provides deferred operating system interaction. [I] must not be copied.
+// Methods of [I] must not be used concurrently.
+type I = system.I