prior shape (bare json list -> 'tools.build:cxxflags=[...]') leaked into
the consumer/rippled build via the conan-generated toolchain
(CMAKE_CXX_FLAGS_INIT). on macOS, where the build action doesn't
override CMAKE_CXX_FLAGS, this would silently apply the workaround flag
to rippled itself.
reshape the input to a json object keyed by Conan package pattern:
{"grpc/*":["-Wno-..."]}
action emits package-pattern scoped lines:
grpc/*:tools.build:cxxflags=["-Wno-..."]
flags only apply while building the matching dependency. consumer
toolchain stays clean. python validator rejects the consumer pattern
('&') and malformed shapes.
new dependencies action input `conan_deps_cxxflags` (json list, default
'[]') drives `tools.build:cxxflags` in the conan profile. clearly named
to indicate the flags only apply to conan dependency builds, not the
rippled build itself.
removes the per-os/per-compiler hardcoded workaround (linux clang
conditional + unconditional macOS block) that used to set the same flag
in two places kept-in-sync by hand.
call sites:
- xahau-ga-nix.yml: clang-20 coverage row gets the
-Wno-missing-template-arg-list-after-template-kw workaround for grpc 1.50.1
- xahau-ga-macos.yml.disabled: same flag plumbed through (preserves
prior behaviour when re-enabled)
drop the workaround entries when grpc is bumped past the fix.
grpc 1.50.1 hits -Werror=missing-template-arg-list-after-template-kw on
clang-19+. macOS clang already had this workaround in the conan profile;
mirror it to the Linux branch, gated on compiler==clang.
