342 lines
9.6 KiB
R
342 lines
9.6 KiB
R
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local({
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# the requested version of renv
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version <- "0.10.0"
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# the project directory
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project <- getwd()
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# avoid recursion
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if (!is.na(Sys.getenv("RENV_R_INITIALIZING", unset = NA)))
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return(invisible(TRUE))
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# signal that we're loading renv during R startup
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Sys.setenv("RENV_R_INITIALIZING" = "true")
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on.exit(Sys.unsetenv("RENV_R_INITIALIZING"), add = TRUE)
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# signal that we've consented to use renv
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options(renv.consent = TRUE)
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# load the 'utils' package eagerly -- this ensures that renv shims, which
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# mask 'utils' packages, will come first on the search path
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library(utils, lib.loc = .Library)
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# check to see if renv has already been loaded
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if ("renv" %in% loadedNamespaces()) {
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# if renv has already been loaded, and it's the requested version of renv,
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# nothing to do
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spec <- .getNamespaceInfo(.getNamespace("renv"), "spec")
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if (identical(spec[["version"]], version))
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return(invisible(TRUE))
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# otherwise, unload and attempt to load the correct version of renv
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unloadNamespace("renv")
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}
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# load bootstrap tools
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bootstrap <- function(version, library) {
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# fix up repos
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repos <- getOption("repos")
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on.exit(options(repos = repos), add = TRUE)
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repos[repos == "@CRAN@"] <- "https://cloud.r-project.org"
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options(repos = repos)
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# attempt to download renv
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tarball <- tryCatch(renv_bootstrap_download(version), error = identity)
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if (inherits(tarball, "error"))
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stop("failed to download renv ", version)
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# now attempt to install
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status <- tryCatch(renv_bootstrap_install(version, tarball, library), error = identity)
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if (inherits(status, "error"))
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stop("failed to install renv ", version)
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}
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renv_bootstrap_download_impl <- function(url, destfile) {
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mode <- "wb"
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# https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17715
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fixup <-
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Sys.info()[["sysname"]] == "Windows" &&
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substring(url, 1L, 5L) == "file:"
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if (fixup)
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mode <- "w+b"
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download.file(
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url = url,
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destfile = destfile,
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mode = mode,
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quiet = TRUE
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)
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}
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renv_bootstrap_download <- function(version) {
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methods <- list(
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renv_bootstrap_download_cran_latest,
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renv_bootstrap_download_cran_archive,
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renv_bootstrap_download_github
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)
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for (method in methods) {
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path <- tryCatch(method(version), error = identity)
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if (is.character(path) && file.exists(path))
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return(path)
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}
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stop("failed to download renv ", version)
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}
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renv_bootstrap_download_cran_latest <- function(version) {
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# check for renv on CRAN matching this version
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db <- as.data.frame(available.packages(), stringsAsFactors = FALSE)
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if (!"renv" %in% rownames(db))
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stop("renv is not available on your declared package repositories")
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entry <- db["renv", ]
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if (!identical(entry$Version, version))
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stop("renv is not available on your declared package repositories")
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message("* Downloading renv ", version, " from CRAN ... ", appendLF = FALSE)
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info <- tryCatch(
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download.packages("renv", destdir = tempdir()),
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condition = identity
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)
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if (inherits(info, "condition")) {
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message("FAILED")
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return(FALSE)
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}
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message("OK")
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info[1, 2]
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}
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renv_bootstrap_download_cran_archive <- function(version) {
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name <- sprintf("renv_%s.tar.gz", version)
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repos <- getOption("repos")
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urls <- file.path(repos, "src/contrib/Archive/renv", name)
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destfile <- file.path(tempdir(), name)
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message("* Downloading renv ", version, " from CRAN archive ... ", appendLF = FALSE)
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for (url in urls) {
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status <- tryCatch(
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renv_bootstrap_download_impl(url, destfile),
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condition = identity
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)
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if (identical(status, 0L)) {
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message("OK")
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return(destfile)
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}
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}
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message("FAILED")
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return(FALSE)
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}
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renv_bootstrap_download_github <- function(version) {
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enabled <- Sys.getenv("RENV_BOOTSTRAP_FROM_GITHUB", unset = "TRUE")
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if (!identical(enabled, "TRUE"))
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return(FALSE)
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# prepare download options
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pat <- Sys.getenv("GITHUB_PAT")
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if (nzchar(Sys.which("curl")) && nzchar(pat)) {
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fmt <- "--location --fail --header \"Authorization: token %s\""
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extra <- sprintf(fmt, pat)
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saved <- options("download.file.method", "download.file.extra")
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options(download.file.method = "curl", download.file.extra = extra)
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on.exit(do.call(base::options, saved), add = TRUE)
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} else if (nzchar(Sys.which("wget")) && nzchar(pat)) {
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fmt <- "--header=\"Authorization: token %s\""
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extra <- sprintf(fmt, pat)
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saved <- options("download.file.method", "download.file.extra")
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options(download.file.method = "wget", download.file.extra = extra)
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on.exit(do.call(base::options, saved), add = TRUE)
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}
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message("* Downloading renv ", version, " from GitHub ... ", appendLF = FALSE)
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url <- file.path("https://api.github.com/repos/rstudio/renv/tarball", version)
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name <- sprintf("renv_%s.tar.gz", version)
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destfile <- file.path(tempdir(), name)
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status <- tryCatch(
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renv_bootstrap_download_impl(url, destfile),
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condition = identity
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)
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if (!identical(status, 0L)) {
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message("FAILED")
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return(FALSE)
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}
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message("Done!")
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return(destfile)
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}
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renv_bootstrap_install <- function(version, tarball, library) {
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# attempt to install it into project library
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message("* Installing renv ", version, " ... ", appendLF = FALSE)
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dir.create(library, showWarnings = FALSE, recursive = TRUE)
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# invoke using system2 so we can capture and report output
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bin <- R.home("bin")
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exe <- if (Sys.info()[["sysname"]] == "Windows") "R.exe" else "R"
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r <- file.path(bin, exe)
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args <- c("--vanilla", "CMD", "INSTALL", "-l", shQuote(library), shQuote(tarball))
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output <- system2(r, args, stdout = TRUE, stderr = TRUE)
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message("Done!")
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# check for successful install
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status <- attr(output, "status")
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if (is.numeric(status) && !identical(status, 0L)) {
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header <- "Error installing renv:"
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lines <- paste(rep.int("=", nchar(header)), collapse = "")
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text <- c(header, lines, output)
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writeLines(text, con = stderr())
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}
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status
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}
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renv_bootstrap_prefix <- function() {
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# construct version prefix
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version <- paste(R.version$major, R.version$minor, sep = ".")
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prefix <- paste("R", numeric_version(version)[1, 1:2], sep = "-")
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# include SVN revision for development versions of R
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# (to avoid sharing platform-specific artefacts with released versions of R)
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devel <-
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identical(R.version[["status"]], "Under development (unstable)") ||
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identical(R.version[["nickname"]], "Unsuffered Consequences")
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if (devel)
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prefix <- paste(prefix, R.version[["svn rev"]], sep = "-r")
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# build list of path components
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components <- c(prefix, R.version$platform)
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# include prefix if provided by user
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prefix <- Sys.getenv("RENV_PATHS_PREFIX")
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if (nzchar(prefix))
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components <- c(prefix, components)
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# build prefix
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paste(components, collapse = "/")
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}
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renv_bootstrap_library_root <- function(project) {
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path <- Sys.getenv("RENV_PATHS_LIBRARY", unset = NA)
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if (!is.na(path))
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return(path)
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path <- Sys.getenv("RENV_PATHS_LIBRARY_ROOT", unset = NA)
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if (!is.na(path))
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return(file.path(path, basename(project)))
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file.path(project, "renv/library")
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}
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renv_bootstrap_validate_version <- function(version) {
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loadedversion <- utils::packageDescription("renv", fields = "Version")
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if (version == loadedversion)
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return(TRUE)
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# assume four-component versions are from GitHub; three-component
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# versions are from CRAN
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components <- strsplit(loadedversion, "[.-]")[[1]]
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remote <- if (length(components) == 4L)
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paste("rstudio/renv", loadedversion, sep = "@")
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else
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paste("renv", loadedversion, sep = "@")
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fmt <- paste(
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"renv %1$s was loaded from project library, but renv %2$s is recorded in lockfile.",
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"Use `renv::record(\"%3$s\")` to record this version in the lockfile.",
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"Use `renv::restore(packages = \"renv\")` to install renv %2$s into the project library.",
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sep = "\n"
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)
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msg <- sprintf(fmt, loadedversion, version, remote)
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warning(msg, call. = FALSE)
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FALSE
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}
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renv_bootstrap_load <- function(project, libpath, version) {
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# try to load renv from the project library
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if (!requireNamespace("renv", lib.loc = libpath, quietly = TRUE))
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return(FALSE)
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# warn if the version of renv loaded does not match
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renv_bootstrap_validate_version(version)
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# load the project
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renv::load(project)
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TRUE
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}
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# construct path to library root
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root <- renv_bootstrap_library_root(project)
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# construct library prefix for platform
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prefix <- renv_bootstrap_prefix()
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# construct full libpath
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libpath <- file.path(root, prefix)
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# attempt to load
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if (renv_bootstrap_load(project, libpath, version))
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return(TRUE)
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# load failed; attempt to bootstrap
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bootstrap(version, libpath)
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# try again to load
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if (requireNamespace("renv", lib.loc = libpath, quietly = TRUE)) {
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message("Successfully installed and loaded renv ", version, ".")
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return(renv::load())
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}
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# failed to download or load renv; warn the user
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msg <- c(
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"Failed to find an renv installation: the project will not be loaded.",
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"Use `renv::activate()` to re-initialize the project."
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)
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warning(paste(msg, collapse = "\n"), call. = FALSE)
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})
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