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kbexec <- function() {
where <- Sys.which("keybase")
if (where == "") {
paste0(
c(
"`keybase` executable not found.",
"Visit 'https://keybase.io/' to download and install keybase.",
"NOTE: this may require extra step to enable the Keybase filesystem driver."
),
collapse = " "
) -> msg
msg <- paste0(strwrap(msg), collapse = "\n")
stop(msg, call. = FALSE)
}
where
}
is_windows <- function() .Platform$OS.type == "windows"
is_mac <- function() Sys.info()[["sysname"]] == "Darwin"
is_linux <- function() Sys.info()[["sysname"]] == "Linux"
#' Execution platform
#' @return one of `c("win", "mac", "linux")`
#' @export
platform <- function() {
if (is_windows()) return("win")
if (is_mac()) return("mac")
if (is_linux()) return("linux")
stop("unknown platform")
}