entc/gen: ignore non-usage code for mixin in runtime.go (#1057)

fixes #1056

entc/gen/template/runtime.tmpl

@@ -129,6 +129,7 @@ func init() {
         {{- with $idx := $n.MixedInFields }}
             {{- range $i := $idx }}
                 {{ print $pkg "MixinFields" $i }} := {{ $pkg }}Mixin[{{ $i }}].Fields()
+                _ = {{ $pkg }}MixinFields{{ $i }}
             {{- end }}
 		{{- end }}
 		{{- $fields := $n.Fields }}{{ if $n.ID.UserDefined }}{{ $fields = append $fields $n.ID }}{{ end }}

entc/integration/customid/ent/runtime.go

@@ -31,6 +31,7 @@ func init() {
 	blob.DefaultID = blobDescID.Default.(func() uuid.UUID)
 	carMixin := schema.Car{}.Mixin()
 	carMixinFields0 := carMixin[0].Fields()
+	_ = carMixinFields0
 	carFields := schema.Car{}.Fields()
 	_ = carFields
 	// carDescBeforeID is the schema descriptor for before_id field.
@@ -47,6 +48,7 @@ func init() {
 	car.IDValidator = carDescID.Validators[0].(func(int) error)
 	mixinidMixin := schema.MixinID{}.Mixin()
 	mixinidMixinFields0 := mixinidMixin[0].Fields()
+	_ = mixinidMixinFields0
 	mixinidFields := schema.MixinID{}.Fields()
 	_ = mixinidFields
 	// mixinidDescID is the schema descriptor for id field.

entc/integration/ent/runtime.go

@@ -25,6 +25,7 @@ import (
 func init() {
 	cardMixin := schema.Card{}.Mixin()
 	cardMixinFields0 := cardMixin[0].Fields()
+	_ = cardMixinFields0
 	cardFields := schema.Card{}.Fields()
 	_ = cardFields
 	// cardDescCreateTime is the schema descriptor for create_time field.
@@ -137,6 +138,7 @@ func init() {
 	task.PriorityValidator = taskDescPriority.Validators[0].(func(int) error)
 	userMixin := schema.User{}.Mixin()
 	userMixinFields0 := userMixin[0].Fields()
+	_ = userMixinFields0
 	userFields := schema.User{}.Fields()
 	_ = userFields
 	// userDescOptionalInt is the schema descriptor for optional_int field.

entc/integration/gremlin/ent/runtime.go

@@ -25,6 +25,7 @@ import (
 func init() {
 	cardMixin := schema.Card{}.Mixin()
 	cardMixinFields0 := cardMixin[0].Fields()
+	_ = cardMixinFields0
 	cardFields := schema.Card{}.Fields()
 	_ = cardFields
 	// cardDescCreateTime is the schema descriptor for create_time field.
@@ -137,6 +138,7 @@ func init() {
 	task.PriorityValidator = taskDescPriority.Validators[0].(func(int) error)
 	userMixin := schema.User{}.Mixin()
 	userMixinFields0 := userMixin[0].Fields()
+	_ = userMixinFields0
 	userFields := schema.User{}.Fields()
 	_ = userFields
 	// userDescOptionalInt is the schema descriptor for optional_int field.

entc/integration/hooks/ent/runtime/runtime.go

@@ -40,6 +40,7 @@ func init() {
 	userMixinHooks0 := userMixin[0].Hooks()
 	user.Hooks[0] = userMixinHooks0[0]
 	userMixinFields0 := userMixin[0].Fields()
+	_ = userMixinFields0
 	userFields := schema.User{}.Fields()
 	_ = userFields
 	// userDescVersion is the schema descriptor for version field.

entc/integration/migrate/entv2/runtime.go

@@ -17,6 +17,7 @@ import (
 func init() {
 	userMixin := schema.User{}.Mixin()
 	userMixinFields0 := userMixin[0].Fields()
+	_ = userMixinFields0
 	userFields := schema.User{}.Fields()
 	_ = userFields
 	// userDescMixedString is the schema descriptor for mixed_string field.