Showing <NA> in deprecation warning

[rjake]

In the examples and my own code, I see <NA> in the output
https://lifecycle.r-lib.org/reference/deprecate_soft.html#ref-examples

deprecate_warn("1.0.0", "foo()")
#> Warning: `foo()` was deprecated in <NA> 1.0.0.

I think it's not finding the pkg argument

lifecycle/R/deprecate.R

Line 316 in 80a1e52

glue_what("{ fn } was deprecated in { pkg } { when }.")

[lionel-]

It will be detected once used from a function that lives in a package namespace. We could add an info bullet about this.

The other way you can provide the info is by supplying "pkg::foo()" instead of "foo()".

[hadley]

We might also try a different placeholder than <NA>.