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if(!file.exists("../windows/libxml2/include/libxml2/libxml")){
unlink("../windows", recursive = TRUE)
url <- if(grepl("aarch", R.version$platform)){
"https://github.com/r-windows/bundles/releases/download/libxml2-2.11.5/libxml2-2.11.5-clang-aarch64.tar.xz"
} else if(grepl("clang", Sys.getenv('R_COMPILED_BY'))){
"https://github.com/r-windows/bundles/releases/download/libxml2-2.11.5/libxml2-2.11.5-clang-x86_64.tar.xz"
} else if(getRversion() >= "4.2") {
"https://github.com/r-windows/bundles/releases/download/libxml2-2.11.5/libxml2-2.11.5-ucrt-x86_64.tar.xz"
} else {
"https://github.com/rwinlib/libxml2/archive/v2.10.3.tar.gz"
}
download.file(url, basename(url), quiet = TRUE)
dir.create("../windows", showWarnings = FALSE)
untar(basename(url), exdir = "../windows", tar = 'internal')
unlink(basename(url))
setwd("../windows")
file.rename(list.files(), 'libxml2')
}
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