Query system requirements

Note that these functions are now deprecated, in favor of pkg_sysreqs() and the sysreqs_* functions, which are more powerful, as they work for all package sources (packages at Github, GitLab, URLs, etc.) and they have more detailed output.

Instead of

pak::pkg_system_requirement("curl")

call

pak::pkg_sysreqs("curl")$install_scripts

and the equivalent of

pak::local_system_requirements()

is

pak::pkg_sysreqs("local::.", dependencies = TRUE)$install_script

Usage

local_system_requirements(
  os = NULL,
  os_release = NULL,
  root = ".",
  execute = FALSE,
  sudo = execute,
  echo = FALSE
)

pkg_system_requirements(
  package,
  os = NULL,
  os_release = NULL,
  execute = FALSE,
  sudo = execute,
  echo = FALSE
)

Arguments

os, os_release

The operating system and operating system release version, e.g. "ubuntu", "centos", "redhat". See supported_os_versions() for all full list of supported operating systems.

If NULL, the default, these will be looked up.

root

Path to the package tree.

execute, sudo

If execute is TRUE, pak will execute the system commands (if any). If sudo is TRUE, pak will prepend the commands with sudo.

echo

If echo is TRUE and execute is TRUE, echo the command output.

package

Package names to lookup system requirements for.

Value

A character vector of commands needed to install the system requirements for the package.

Details

Returns a character vector of commands to run that will install system requirements for the queried operating system.

local_system_requirements() queries system requirements for a dev package (and its dependencies) given its root path.

pkg_system_requirements() queries system requirements for existing packages (and their dependencies).

Examples

if (FALSE) {
local_system_requirements("ubuntu", "20.04")
}
if (FALSE) {
pkg_system_requirements("pak", "ubuntu", "20.04")
pkg_system_requirements("pak", "redhat", "7")
pkg_system_requirements("config", "ubuntu", "20.04") # no sys reqs
pkg_system_requirements("curl", "ubuntu", "20.04")
pkg_system_requirements("git2r", "ubuntu", "20.04")
pkg_system_requirements(c("config", "git2r", "curl"), "ubuntu", "20.04")
# queried packages must exist
pkg_system_requirements("iDontExist", "ubuntu", "20.04")
pkg_system_requirements(c("curl", "iDontExist"), "ubuntu", "20.04")
}