@evalNamespace fails with warning

[hughjonesd]

In hello.R:

#' @evalNamespace "export(foo)"
NULL

If I run roxygen2::roxygenize() using version 6.1.1, this creates a NAMESPACE file containing the line

export(foo)

as expected. However, using version 7.0.2, I get a warning:

Warning: [/Users/david/packagefileprob/R/hello.R:1] @evalNamespace failed with error:
invalid 'envir' argument of type 'closure'

and the line is not written in NAMESPACE.

The error appears to be that in roxy_tag_eval, env is not being passed, and is instead being taken to be rlang::env. The original cause seems to be this line in roclet_preprocess.roclet_namespace:

  lines <- blocks_to_ns(blocks, env, import_only = TRUE)

which refers to a not locally defined env variable.

[hadley]

Looks like the problem was introduced here: 8c82a07#diff-85658d9a5cecb42c8e8957560ab6d7abL54-L65

[hadley]

Fixed now — would you mind sharing what you're using @evalNamespace for?

[hughjonesd]

It's for autogeneration of a lot of namespace entries, see here:
https://github.com/hughjonesd/huxtable/blob/master/R/properties.R