Make build subprocess use specified libpath

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: rcmdcheck
 Title: Run 'R CMD check' from 'R' and Capture Results
-Version: 1.4.0.9000
+Version: 1.4.0.9001
 Authors@R: c(
     person("Gábor", "Csárdi", , "[email protected]", role = c("cre", "aut")),
     person("Mango Solutions", role = c("cph", "fnd")),
@@ -42,4 +42,4 @@ Config/Needs/website: tidyverse/tidytemplate
 Config/testthat/edition: 3
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.2.1
+RoxygenNote: 7.3.2

NAMESPACE

@@ -43,4 +43,5 @@ importFrom(utils,tail)
 importFrom(withr,local_path)
 importFrom(withr,with_dir)
 importFrom(withr,with_envvar)
+importFrom(withr,with_libpaths)
 importFrom(xopen,xopen)

NEWS.md

@@ -1,11 +1,13 @@
-
 # rcmdcheck (development version)
 
 * Fixed an issue where check output could be malformed when testing
   packages with multiple test files (#205, @kevinushey).
 
 * Update pkgdown template and move url to https://rcmdcheck.r-lib.org.
 
+* Fixed and issue where `rcmdcheck_process$new()` could fail the setup stage
+  due to `libpath` not being used by the build sub process. (#230, @maksymiuks)
+
 # rcmdcheck 1.4.0
 
 * `cran_check_results()` now downloads results in parallel, so it is

R/build.R

@@ -1,6 +1,6 @@
 
 #' @importFrom pkgbuild pkgbuild_process
-#' @importFrom withr with_envvar
+#' @importFrom withr with_libpaths
 
 build_package <- function(path, tmpdir, build_args, libpath, quiet) {
   path <- normalizePath(path)
@@ -16,8 +16,7 @@ build_package <- function(path, tmpdir, build_args, libpath, quiet) {
     desc <- desc(path)
     clean_doc <- as_flag(desc$get("Config/build/clean-inst-doc"), NULL)
 
-    with_envvar(
-      c("R_LIBS_USER" = paste(libpath, collapse = .Platform$path.sep)), {
+    with_libpaths(libpath, {
         proc <- pkgbuild_process$new(
           path,
           tmpdir,