Print session information — session

This is utils::sessionInfo() re-written from scratch to both exclude data that's rarely useful (e.g., the full collate string or base packages loaded) and include stuff you'd like to know (e.g., where a package was installed from).

Usage

session_info(
  pkgs = c("loaded", "attached", "installed")[1],
  include_base = FALSE,
  info = c("auto", "all", "platform", "packages", "python", "external"),
  dependencies = NA,
  to_file = FALSE
)

Arguments

pkgs

Which packages to show. It may be:

NULL or "loaded": show all loaded packages,
"attached": show all attached packages,
"installed": show all installed packages,
a character vector of package names. Their (hard) dependencies are also shown by default, see the dependencies argument.

include_base

Include base packages in summary? By default this is false since base packages should always match the R version.

info

What information to show, it can be "auto" to choose automatically, "all" to show everything, or a character vector with elements from:

"platform": show platform information via platform_info(),
"packages": show package information via package_info(),
"python": show Python configuration via python_info(),
"external": show information about external software, via external_info().

dependencies

Whether to include the (recursive) dependencies as well. See the dependencies argument of utils::install.packages().

to_file

Whether to print the session information to a file. If TRUE the name of the file will be session-info.txt, but to_file may also be a string to specify the file name.

Value

A session_info object.

If to_file is not FALSE then it is returned invisibly. (To print it to both a file and to the screen, use (session_info(to_file = TRUE)).)

Details

Columns in the printed package list:

package: package name
*: whether the package is attached to the search path
version: package version. If the version is marked with (!) that means that the loaded and the on-disk version of the package are different.
date: when the package was built, if this information is available. This is the Date/Publication or the Built field from DESCRIPTION. (These are usually added automatically by R.) Sometimes this data is not available, then it is NA.
source: where the package was built or installed from, if available. Examples: CRAN (R 3.3.2), Github (r-lib/pkgbuild@8aab60b), Bioconductor, local.

See package_info() for the list of columns in the data frame that is returned (as opposed to printed).

Examples

if (FALSE) {
session_info()
session_info("sessioninfo")
}