This is a tool to move existing packages into monorepos.
dart run bin/trebuchet.dart \ --input-name coverage \ --branch-name master \ --input-path ~/projects/coverage/ \ --target tools \ --target-path ~/projects/tools/ \ --git-filter-repo ~/tools/git-filter-repo \ --dry-run
This basically executes the instructions at https://github.com/dart-lang/ecosystem/wiki/Merging-existing-repos-into-a-monorepo