False positives with lintr on package that uses rcpp

[pschloss]

Before filing a bug

• I have installed the latest dev version of {precommit} with remotes::install_github('lorenzwalthert/precommit')
• I have installed the latest hook revisions (update with precommit::autoupdate())
• I have installed the latest release of the upstream Python framework pre-comit as described under the update instructions.

Describe the bug

My R package has internal Rcpp code that is called within a user-facing R function. When I run lintr::lint_package() everything passes. When I commit changes to the *.R file, the lintr hook fails. In the output below, addition() is a file written with {Rcpp}. {Rcpp} was added to the package with usethis::use_rcpp()

$ git commit -m "Trigger precommit hook"
style-files..............................................................Passed
use-tidy-description.................................(no files to check)Skipped
spell-check..............................................................Passed
lintr....................................................................Failed
- hook id: lintr
- exit code: 1

File `R/hello.R` is not lint free
/Users/pschloss/Desktop/test/R/hello.R:8:3: warning: [object_usage_linter] no visible global function definition for 'addition'
  addition(c(1, 2, 3))
  ^~~~~~~~
Error: File R/hello.R is not lint free
Execution halted


readme-rmd-rendered..................................(no files to check)Skipped
parsable-R...............................................................Passed
no-browser-statement.....................................................Passed
no-print-statement.......................................................Passed
no-debug-statement.......................................................Passed
deps-in-desc.............................................................Passed
pkgdown..............................................(no files to check)Skipped
check for added large files..............................................Passed
file contents sorter.................................(no files to check)Skipped
fix end of files.........................................................Passed
check pre-commit.ci config...........................(no files to check)Skipped
Don't commit common R artifacts......................(no files to check)Skipped

To Reproduce
A minimal package is available here. It is the default package generated from RStudio with {Rcpp} and {precommit} loaded. There is an additional file, addition.cpp in src/. It runs as expected and passes the build check.

Expected behavior
Running lintr::lint_package() passes without any issues. I'd expect the same when running the pre-commit hook

Additional context

• My operating system is: Mac OS X
• My project uses {renv}.
• the output of packageVersion('renv')

[lorenzwalthert]

Thanks. The reason is that your package won't be devtool::load_all() so object_usage_linter won't work always it seems as explained in #440. Workarounds also there.

[pschloss]

Thanks! This solution by @joelnitta did the trick for me!