load dependencies by name instead of reference

module.go

@@ -12,7 +12,7 @@ type Module struct {
 	name     string
 	setup    setupFn
 	teardown teardownFn
-	depends  []*Module
+	depends  []string
 }
 
 // ModuleOpts contains user-exposed options when defining a module.
@@ -21,8 +21,9 @@ type ModuleOpts struct {
 	Setup setupFn
 	// Teardown is the teardown function for the module.
 	Teardown teardownFn
-	// Depends is a list of modules that this module depends on.
-	Depends []*Module
+	// Depends is a list of modules that this module depends on. Each entry must
+	// be the exact name of a module registered in the lifecycle.
+	Depends []string
 }
 
 // NewModule creates a new Module instance with the given name and options.
@@ -38,7 +39,7 @@ func NewModule(name string, opts ModuleOpts) *Module {
 // Logger returns the logger for the module.
 func (s *Module) Logger() *slog.Logger {
 	if s.logger == nil {
-		panic(fmt.Sprintf("subsytem %s used before logger was initialized", s.name))
+		panic(fmt.Sprintf("module %s used before logger was initialized", s.name))
 	}
 	return s.logger
 }
@@ -47,8 +48,3 @@ func (s *Module) Logger() *slog.Logger {
 func (s *Module) Name() string {
 	return s.name
 }
-
-// ModuleList is a convenience function that creates a slice of modules.
-func ModuleList(modules ...*Module) []*Module {
-	return modules
-}