Error in as.environment(pos) / Error during wrapup: no item called "package:[package]" on the search list

Package development
1

Hi folks,

This is similar to this but with a followup question:

I'm preparing my package for submission to CRAN. In one script, it gives the titular error:

Error in as.environment(pos): no item called "package:shapefiles" on the search list

or

Error during wrapup: no item called "package:shapefiles" on the search list

If, like the similar thread linked above, I add

attachNamespace("shapefiles")

Then I no longer get that error, but instead get the error or warning:

namespace(shapefiles) was already taken

Sometimes, I believe if the function/script is run more than once. What's so weird about this to me is that

#' @import shapefiles

is in that scripts markdown block,

Which means

import(shapefiles)

is in NAMESPACE, and

Imports:
    shapefiles (>= 0.7),

is in DESCRIPTION. I have numerous other package dependencies which are imported the same way (correctly, I believe), and none of them produce this error. I don't see why this is behaving differently therefore, and would like to avoid having either issue before submitting to CRAN. The code that calls this package, in my script, is

shapefiles::read.shapefile(savename)

Script is here, for reference.

Thanks in advance for any ideas!

2

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