Getting started with qgisprocess
In qgisprocess: Use 'QGIS' Processing Algorithms

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
can_build <- qgisprocess::has_qgis() &&
  all(qgisprocess::qgis_has_plugin(c(
    "grassprovider",
    "processing_saga_nextgen"
  ))) &&
  requireNamespace("spDataLarge", quietly = TRUE) &&
  requireNamespace("sf", quietly = TRUE) &&
  requireNamespace("terra", quietly = TRUE) &&
  requireNamespace("mapview", quietly = TRUE)

cat("This vignette has been built in absence of a QGIS installation, with a missing QGIS plugin, or in absence of the spDataLarge, sf, terra or mapview package.\n\n")
cat("Read it online at <https://r-spatial.github.io/qgisprocess/articles/qgisprocess.html>.")