Is apt-get build-dep supposed to ignore pipes in the build-depends?

[Scott Ritchie]

Perhaps I missed something, but are pipes (as in "or") in the
build-depends for a package a big no-no?

I have a package build-depend on "libicu28-dev | libicu34-dev" and
apt-get complains that libicu28-dev isn't installable, but that
libicu34-dev replaces it...then errors out.  It seems like it should
just be installing libicu34-dev instead.

Thanks,
Scott Ritchie