feat: make RLN available by default

Makefile

@@ -42,8 +42,8 @@ BUILD_FLAGS ?= $(shell echo "-ldflags='\
 ANDROID_TARGET ?= 23
 
 # control rln code compilation
-ifeq ($(RLN), true)
-BUILD_TAGS := gowaku_rln
+ifeq ($(NO_RLN), true)
+BUILD_TAGS := gowaku_no_rln
 endif
 
 all: build
@@ -58,7 +58,7 @@ build:
 
 chat2:
 	pushd ./examples/chat2 && \
-	${GOBIN} build -tags="gowaku_rln" -o ../../build/chat2 . && \
+	${GOBIN} build -o ../../build/chat2 . && \
 	popd
 
 vendor:
@@ -130,7 +130,7 @@ static-library:
 	@echo "Building static library..."
 	${GOBIN} build \
 		-buildmode=c-archive \
-		-tags="${BUILD_TAGS}" \
+		-tags="${BUILD_TAGS} gowaku_no_rln" \
 		-o ./build/lib/libgowaku.a \
 		./library/c/
 	@echo "Static library built:"
@@ -146,7 +146,7 @@ dynamic-library:
 	rm -f ./build/lib/libgowaku.$(GOBIN_SHARED_LIB_EXT)*
 	$(GOBIN_SHARED_LIB_CFLAGS) $(GOBIN_SHARED_LIB_CGO_LDFLAGS) ${GOBIN} build \
 		-buildmode=c-shared \
-		-tags="${BUILD_TAGS}" \
+		-tags="${BUILD_TAGS} gowaku_no_rln" \
 		-o ./build/lib/libgowaku.$(GOBIN_SHARED_LIB_EXT) \
 		./library/c/
 ifeq ($(detected_OS),Darwin)
@@ -166,14 +166,14 @@ mobile-android:
 	@echo "Android target: ${ANDROID_TARGET} (override with ANDROID_TARGET var)"
 	gomobile init && \
 	${GOBIN} get -d golang.org/x/mobile/cmd/gomobile && \
-	gomobile bind -v -target=android -androidapi=${ANDROID_TARGET} -ldflags="-s -w" -tags="${BUILD_TAGS}" $(BUILD_FLAGS) -o ./build/lib/gowaku.aar ./library/mobile
+	CGO=1 gomobile bind -v -target=android -androidapi=${ANDROID_TARGET} -ldflags="-s -w" -tags="${BUILD_TAGS} gowaku_no_rln" $(BUILD_FLAGS) -o ./build/lib/gowaku.aar ./library/mobile
 	@echo "Android library built:"
 	@ls -la ./build/lib/*.aar ./build/lib/*.jar
 
 mobile-ios:
 	gomobile init && \
 	${GOBIN} get -d golang.org/x/mobile/cmd/gomobile && \
-	gomobile bind -target=ios -ldflags="-s -w" -tags="nowatchdog ${BUILD_TAGS}" $(BUILD_FLAGS) -o ./build/lib/Gowaku.xcframework ./library/mobile
+	gomobile bind -target=ios -ldflags="-s -w" -tags="nowatchdog ${BUILD_TAGS} gowaku_no_rln" $(BUILD_FLAGS) -o ./build/lib/Gowaku.xcframework ./library/mobile
 	@echo "IOS library built:"
 	@ls -la ./build/lib/*.xcframework
 

cmd/waku/flags_no_rln.go

@@ -1,5 +1,5 @@
-//go:build !gowaku_rln
-// +build !gowaku_rln
+//go:build gowaku_no_rln
+// +build gowaku_no_rln
 
 package main
 

cmd/waku/flags_rln.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package main
 

cmd/waku/node_no_rln.go

@@ -1,5 +1,5 @@
-//go:build !gowaku_rln
-// +build !gowaku_rln
+//go:build gowaku_no_rln
+// +build gowaku_no_rln
 
 package main
 

cmd/waku/node_rln.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package main
 

cmd/waku/rlngenerate/command_no_rln.go

@@ -1,5 +1,5 @@
-//go:build !gowaku_rln
-// +build !gowaku_rln
+//go:build gowaku_no_rln
+// +build gowaku_no_rln
 
 package rlngenerate
 

cmd/waku/rlngenerate/command_rln.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package rlngenerate
 

cmd/waku/rlngenerate/flags.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package rlngenerate
 

cmd/waku/rlngenerate/web3.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package rlngenerate
 

cmd/waku/server/no_rln.go

@@ -1,5 +1,5 @@
-//go:build !gowaku_rln
-// +build !gowaku_rln
+//go:build gowaku_no_rln
+// +build gowaku_no_rln
 
 package server
 

cmd/waku/server/rln.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package server
 

examples/chat2/Makefile

@@ -3,7 +3,7 @@
 all: build
 
 build:
-	go build -tags="gowaku_rln" -o build/chat2 .
+	go build -o build/chat2 .
 
 run:
 	./build/chat2

examples/rln/Makefile

@@ -1,6 +1,6 @@
 .PHONY: all build
 
 build:
-	go build -tags="gowaku_rln" -o build/rln .
+	go build -o build/rln .
 
 all: build

flake.nix

@@ -22,6 +22,7 @@
           name = "go-waku";
           src = self;
           inherit subPackages;
+          tags = [ "gowaku_no_rln" ];
           ldflags = [
             "-X github.com/waku-org/go-waku/waku/v2/node.GitCommit=${commit}"
             "-X github.com/waku-org/go-waku/waku/v2/node.Version=${version}"

waku/v2/node/wakunode2_no_rln.go

@@ -1,5 +1,5 @@
-//go:build !gowaku_rln
-// +build !gowaku_rln
+//go:build gowaku_no_rln
+// +build gowaku_no_rln
 
 package node
 

waku/v2/node/wakunode2_rln.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package node
 

waku/v2/node/wakuoptions_rln.go

@@ -1,5 +1,5 @@
-//go:build gowaku_rln
-// +build gowaku_rln
+//go:build !gowaku_no_rln
+// +build !gowaku_no_rln
 
 package node
 
@@ -10,7 +10,6 @@ import (
 )
 
 // WithStaticRLNRelay enables the Waku V2 RLN protocol in offchain mode
-// Requires the `gowaku_rln` build constrain (or the env variable RLN=true if building go-waku)
 func WithStaticRLNRelay(memberIndex *r.MembershipIndex, spamHandler rln.SpamHandler) WakuNodeOption {
 	return func(params *WakuNodeParameters) error {
 		params.enableRLN = true
@@ -22,7 +21,6 @@ func WithStaticRLNRelay(memberIndex *r.MembershipIndex, spamHandler rln.SpamHand
 }
 
 // WithDynamicRLNRelay enables the Waku V2 RLN protocol in onchain mode.
-// Requires the `gowaku_rln` build constrain (or the env variable RLN=true if building go-waku)
 func WithDynamicRLNRelay(keystorePath string, keystorePassword string, treePath string, membershipContract common.Address, membershipIndex *uint, spamHandler rln.SpamHandler, ethClientAddress string) WakuNodeOption {
 	return func(params *WakuNodeParameters) error {
 		params.enableRLN = true