You are mistaken. stricter is a lexically scoped compile-time effect from a use statement. It's very much a pragma.

To avoid naming conflicts with future pragmas it shouldn't even be named "stricter", rather "My::stricter"

And it should have documentation. Not relevant.

Anyway I bet some of the pragmas listed will not support the import interface.

Are you saying there are pragmas that don't use use, or that use doesn't call import as documented?

Not only that, but it's impossible for a pragma to function without defining an import method. Pragmas must execute code every time its use is encountered, so they must use import. require only executes code the first time it's called for a module. Not using the "import interface" is impossible.)

Update: Added second-last paragraph.