fix: resolved gomobile issue

Makefile

@@ -25,10 +25,8 @@ envinit:
 	go install github.com/vektra/mockery/v2@latest
 	go install github.com/matryer/moq@latest
 	go install golang.org/x/tools/cmd/goimports@latest
-	go install golang.org/x/mobile/cmd/gomobile@latest
-	# The gomobile/gobind libs are also needed when using `gomobile bind`, but it's not compatible with vendoring:
-	# https://github.com/golang/go/issues/50994#issuecomment-1032754206
-	GO111MODULE=off go get -u golang.org/x/mobile/cmd/gomobile
+	# TODO: replace with golang.org/x/mobile/cmd/gomobile@latest once https://github.com/golang/mobile/pull/105 is merged.
+	go install github.com/baizon/mobile/cmd/gomobile@latest
 	gomobile init
 # Initializiation on MacOS
 #  - run make from $GOPATH/src/github.com/BitBoxSwiss/bitbox-wallet-app

android-env.mk.inc

@@ -1,2 +1,3 @@
 export ANDROID_SDK_ROOT := /opt/android-sdk
 export ANDROID_NDK_HOME := /opt/android-sdk/ndk/21.2.6472646
+export GOMODCACHE_ROOT := /tmp/gomodcache/pkg/mod

backend/mobileserver/Makefile

@@ -4,8 +4,8 @@ include ../../android-env.mk.inc
 # Probably a variation of https://github.com/golang/go/issues/27234 - solution is to build it using vendored deps
 # by turning off GO111MODULE. See also: https://github.com/golang/go/issues/34181#issuecomment-640260162
 build-android:
-	GO111MODULE=off ANDROID_HOME=${ANDROID_SDK_ROOT} gomobile bind -x -a -ldflags="-s -w" -target android .
+	GOMODCACHE=${GOMODCACHE_ROOT} ANDROID_HOME=${ANDROID_SDK_ROOT} gomobile bind -x -a -glflags="-mod=mod" -ldflags="-s -w" -target android .
 build-ios:
-	GO111MODULE=off gomobile bind -x -a -ldflags="-s -w" -target ios,iossimulator .
+	GOMODCACHE=${GOMODCACHE_ROOT} gomobile bind -x -a -glflags="-mod=mod" -ldflags="-s -w" -target ios,iossimulator .
 clean:
 	rm -f mobileserver.aar mobileserver-sources.jar

backend/mobileserver/implicit.go

@@ -0,0 +1,9 @@
+// This file imports implicit dependencies required by generated code.
+
+package mobileserver
+
+import (
+	_ "golang.org/x/mobile/bind"
+	_ "golang.org/x/mobile/bind/java"
+	_ "golang.org/x/mobile/bind/objc"
+)

go.mod

@@ -20,12 +20,16 @@ require (
 	github.com/stretchr/testify v1.9.0
 	go.etcd.io/bbolt v1.3.10
 	golang.org/x/crypto v0.25.0
+	golang.org/x/mobile v0.0.0-20240716161057-1ad2df20a8b6
 	golang.org/x/net v0.27.0
 )
 
 // TODO: remove once https://github.com/karalabe/hid/pull/52 is merged.
 replace github.com/karalabe/hid => github.com/benma/hid v0.0.0-20240312170000-f050ee197113
 
+// TODO: remove once https://github.com/golang/mobile/pull/105 is merged.
+replace golang.org/x/mobile => github.com/baizon/mobile v0.0.0-20240727101751-72327cc1b4a9
+
 require (
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/aead/siphash v1.0.1 // indirect
@@ -54,8 +58,10 @@ require (
 	github.com/tklauser/numcpus v0.8.0 // indirect
 	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
+	golang.org/x/mod v0.19.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/tools v0.23.0 // indirect
 	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	rsc.io/tmplfunc v0.0.3 // indirect