[MacPorts] #71616: icu @76.1: build fails for 10.13 and earlier, due to dependency cycle

[MacPorts]

#71616: icu @76.1: build fails for 10.13 and earlier, due to dependency cycle
---------------------+------------------------
 Reporter:  mascguy  |      Owner:  mohd-akram
     Type:  defect   |     Status:  assigned
 Priority:  High     |  Milestone:
Component:  ports    |    Version:  2.10.5
 Keywords:           |       Port:  icu
---------------------+------------------------
 The precise details vary depending on the macOS release, but this is what
 we see for 10.13:

 {{{
 --->  Dependencies to be installed: clang-17 libxml2 llvm-17 cctools ld64
 icu xar llvm-10 ld64-latest llvm-9.0
 Error: The following dependencies were not installed because all of them
 have unmet dependencies (likely due to a dependency cycle):
 clang-17 libxml2 llvm-17 cctools ld64 icu xar llvm-10 ld64-latest llvm-9.0
 }}}

 https://ports.macports.org/port/icu/details

 p.s. Given the fallout, prioritizing as High

-- 
Ticket URL: <https://trac.macports.org/ticket/71616>
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