fix(depinject): Authtx was not accepting custom signers (backport #19549) (#19551)

Co-authored-by: Devon Bear <itsdevbear@berachain.com>
Co-authored-by: Qt <golang.chen@gmail.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

CHANGELOG.md

@@ -38,6 +38,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Bug Fixes
+
+* (x/auth) [#19549](https://github.com/cosmos/cosmos-sdk/pull/19549) Accept custom get signers when injecting `x/auth/tx`.
+
 ## [v0.50.4](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.4) - 2023-02-19
 
 ### Features

x/auth/tx/config/config.go

@@ -7,6 +7,7 @@ import (
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	grpcstatus "google.golang.org/grpc/status"
+	"google.golang.org/protobuf/reflect/protoreflect"
 
 	bankv1beta1 "cosmossdk.io/api/cosmos/bank/v1beta1"
 	txconfigv1 "cosmossdk.io/api/cosmos/tx/config/v1"
@@ -51,6 +52,7 @@ type ModuleInputs struct {
 	AccountKeeper          ante.AccountKeeper                 `optional:"true"`
 	FeeGrantKeeper         ante.FeegrantKeeper                `optional:"true"`
 	CustomSignModeHandlers func() []txsigning.SignModeHandler `optional:"true"`
+	CustomGetSigners       []txsigning.CustomGetSigner        `optional:"true"`
 }
 
 type ModuleOutputs struct {
@@ -77,10 +79,15 @@ func ProvideModule(in ModuleInputs) ModuleOutputs {
 			FileResolver:          in.ProtoFileResolver,
 			AddressCodec:          in.AddressCodec,
 			ValidatorAddressCodec: in.ValidatorAddressCodec,
+			CustomGetSigners:      make(map[protoreflect.FullName]txsigning.GetSignersFunc),
 		},
 		CustomSignModes: customSignModeHandlers,
 	}
 
+	for _, mode := range in.CustomGetSigners {
+		txConfigOptions.SigningOptions.CustomGetSigners[mode.MsgType] = mode.Fn
+	}
+
 	// enable SIGN_MODE_TEXTUAL only if bank keeper is available
 	if in.MetadataBankKeeper != nil {
 		txConfigOptions.EnabledSignModes = append(txConfigOptions.EnabledSignModes, signingtypes.SignMode_SIGN_MODE_TEXTUAL)