Change to Local Build of libgit2
  Local Build of libgit2 will likely require applying
    019-1.4.1-port-nl-libgit2-v0.99.0.patch

Find an Julia programmer to help as a run-time tester.

Change to make target configure in prepare
  Requires fixing Out-of-Tree build of GMP 6.1.2 library

Do PR to upstream(s) with a modified version of
  018-1.4.1-llvm-8.0.1-D64937-gcc10.patch
    first upstream to llvm/clang people
    second upstream to Julia people