...Flutter spec recommends using a single LICENSE
file that should contain all the license texts, each separated by a line
with 80 hyphens.
or list of strings using either SPDX license identifiers, or a path/URL
to a license file.
The Cocoapods podspec license field is either a single
string, or a mapping with type, file and text keys.
This is mandatory unless there is a LICENSE/LICENCE file provided.
Haskell Cabal accepts an SPDX license...