.onLoad <- function(...) {
# register the extendr knitr chunk engine if knitr is available
if (requireNamespace("knitr", quietly = TRUE)) {
knitr::knit_engines$set(
extendr = eng_extendr,
extendrsrc = eng_extendrsrc
)
}
# Setting default options
# If rextendr options are already set, do not override
# NULL values are present for reference and may later be replaced
# by concrete values
rextendr_opts <- list(
# Controls default Rust toolchain; NULL corresponds to system's default
rextendr.toolchain = NULL,
# rextendr.toolchain = "nightly", # use 'nightly' tool chain
# Overrides Rust dependencies; mainly used for development
rextendr.patch.crates_io = NULL, # most recent extendr crates on crates.io
# rextendr.patch.crates_io = list( # most recent extendr crates on github
# `extendr-api` = list(git = "https://github.com/extendr/extendr")
# ),
# Version of 'extendr_api' to be used
rextendr.extendr_deps = list(
`extendr-api` = "*"
),
rextendr.extendr_dev_deps = list(
`extendr-api` = list(git = "https://github.com/extendr/extendr")
)
)
id_opts_to_set <- !(names(rextendr_opts) %in% names(options()))
options(rextendr_opts[id_opts_to_set])
}
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