fix: ipns protobuf namespace conflict

CHANGELOG.md

@@ -30,7 +30,7 @@ The following emojis are used to highlight certain changes:
 ### Fixed
 
 - `gateway` Fix redirect URLs for subdirectories with characters that need escaping. [#779](https://github.com/ipfs/boxo/pull/779)
-- `ipns` Defined a `go_package` name in `ipns-record.proto` to avoid protobuf conflicts [#789](https://github.com/ipfs/boxo/pull/789)
+- `ipns` Fix `ipns` protobuf namespace conflicts by using full package name `github.com/ipfs/boxo/ipns/pb/record.proto` instead of the generic `record.proto` [#794](https://github.com/ipfs/boxo/pull/794)
 
 ### Security
 

ipns/pb/Makefile

@@ -0,0 +1,31 @@
+# This Makefile is designed to work around namespace conflicts that occur when
+# multiple repositories depend on .proto files with generic filenames. Due to
+# the way protobuf registers files (e.g., foo.proto or pb/foo.proto), naming
+# collisions can occur when the same filename is used across different
+# packages.
+#
+# The only way to generate a *.pb.go file that includes the full package path
+# (e.g., github.com/org/repo/pb/foo.proto) is to place the .proto file in a
+# directory structure that mirrors its package path.
+#
+# References:
+# * https://protobuf.dev/reference/go/faq#namespace-conflict
+# * https://github.com/golang/protobuf/issues/1122#issuecomment-2045945265
+
+PKG_PATH = github.com/ipfs/boxo/ipns/pb
+PROTONAME = record
+PROTOFILE = ${PROTONAME}.proto
+
+all: clean build
+
+build:
+	mkdir -p ${PKG_PATH}
+	cp ${PROTOFILE} ${PKG_PATH} 
+	protoc --go_out=. ${PKG_PATH}/${PROTOFILE}
+	mv ${PKG_PATH}/${PROTONAME}.pb.go .
+	rm -rf $(firstword $(subst /, ,${PKG_PATH}))
+
+clean:
+	rm -f *.pb.go
+
+.PHONY: all build clean