Unfortunately you need:
options(devtools.desc.author="'First Last <first.last@example.com> [aut, cre]'")
because the contents of Authors@R
must be a valid R expression.
Or using the person
function from the utils
package:
authors_at_r <- paste0(
"'",
person(
"First",
"Last",
email = "first.last@example.com",
role = c("aut", "cre")),
"'"
)
options(devtools.desc.author=authors)