Currently on I see link failures like the following: ```bash ./configure <snip> checking for libsodium with IETF chacha20 variants... yes <snip> ar libccan.a ld ccan/ccan/cdump/tools/cdump-enumstr ld: library 'sodium' not found clang: error: linker command failed with exit code 1 (use -v to see invocation) ``` The configure check passes under Clang here. Changelog-Fixed: build: fix linking against libsodium on macOS.