Recent version for nullable removed implicit conversion, you must
call .get now.. wich is a pain to update
i suggest using a previous version of ``struct Nullable``
https://github.com/dlang/phobos/blob/v2.096.1/std/typecons.d
create a nullable.d file in tkd project, and replace the imports
to that module
that'll solve this issue
but that wouldn't solve the fact that the
https://code.dlang.org/packages/tkd package won't build
we need to contact the maintainers and suggest to update the
library
another solution would be to revert the nullable change
that sounds like an unnecessary change that breaks lot of
code/packages..
