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rustup_mode.rs
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use std::fmt;
use std::io::Write;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::str::FromStr;
use anyhow::{anyhow, bail, Error, Result};
use clap::{App, AppSettings, Arg, ArgGroup, ArgMatches, Shell, SubCommand};
use super::help::*;
use super::self_update;
use super::term2;
use super::term2::Terminal;
use super::topical_doc;
use super::{
common,
self_update::{check_rustup_update, SelfUpdateMode},
};
use crate::cli::errors::CLIError;
use crate::dist::dist::{PartialTargetTriple, PartialToolchainDesc, Profile, TargetTriple};
use crate::dist::manifest::Component;
use crate::errors::RustupError;
use crate::process;
use crate::toolchain::{CustomToolchain, DistributableToolchain};
use crate::utils::utils;
use crate::Notification;
use crate::{command, Cfg, ComponentStatus, Toolchain};
fn handle_epipe(res: Result<utils::ExitCode>) -> Result<utils::ExitCode> {
match res {
Err(e) => {
let root = e.root_cause();
if let Some(io_err) = root.downcast_ref::<std::io::Error>() {
if io_err.kind() == std::io::ErrorKind::BrokenPipe {
return Ok(utils::ExitCode(0));
}
}
Err(e)
}
res => res,
}
}
fn deprecated<F, B, R>(instead: &str, cfg: &mut Cfg, matches: B, callee: F) -> R
where
F: FnOnce(&mut Cfg, B) -> R,
{
(cfg.notify_handler)(Notification::PlainVerboseMessage(
"Use of (currently) unmaintained command line interface.",
));
(cfg.notify_handler)(Notification::PlainVerboseMessage(
"The exact API of this command may change without warning",
));
(cfg.notify_handler)(Notification::PlainVerboseMessage(
"Eventually this command will be a true alias. Until then:",
));
(cfg.notify_handler)(Notification::PlainVerboseMessage(&format!(
" Please use `rustup {}` instead",
instead
)));
callee(cfg, matches)
}
pub fn main() -> Result<utils::ExitCode> {
self_update::cleanup_self_updater()?;
use clap::ErrorKind::*;
let matches = match cli().get_matches_from_safe(process().args_os()) {
Ok(matches) => Ok(matches),
Err(clap::Error {
kind: HelpDisplayed,
message,
..
}) => {
writeln!(process().stdout().lock(), "{}", message)?;
return Ok(utils::ExitCode(0));
}
Err(clap::Error {
kind: VersionDisplayed,
message,
..
}) => {
writeln!(process().stdout().lock(), "{}", message)?;
info!("This is the version for the rustup toolchain manager, not the rustc compiler.");
fn rustc_version() -> std::result::Result<String, Box<dyn std::error::Error>> {
let cfg = &mut common::set_globals(false, true)?;
let cwd = std::env::current_dir()?;
if let Some(t) = process().args().find(|x| x.starts_with('+')) {
debug!("Fetching rustc version from toolchain `{}`", t);
cfg.set_toolchain_override(&t[1..]);
}
let toolchain = cfg.find_or_install_override_toolchain_or_default(&cwd)?.0;
Ok(toolchain.rustc_version())
}
match rustc_version() {
Ok(version) => info!("The currently active `rustc` version is `{}`", version),
Err(err) => debug!("Wanted to tell you the current rustc version, too, but ran into this error: {}", err),
}
return Ok(utils::ExitCode(0));
}
Err(e) => {
{
let clap::Error { kind, message, .. } = &e;
if [
InvalidSubcommand,
UnknownArgument,
MissingArgumentOrSubcommand,
]
.contains(kind)
{
writeln!(process().stdout().lock(), "{}", message)?;
return Ok(utils::ExitCode(1));
}
}
Err(e)
}
}?;
let verbose = matches.is_present("verbose");
let quiet = matches.is_present("quiet");
let cfg = &mut common::set_globals(verbose, quiet)?;
if let Some(t) = matches.value_of("+toolchain") {
cfg.set_toolchain_override(&t[1..]);
}
if maybe_upgrade_data(cfg, &matches)? {
return Ok(utils::ExitCode(0));
}
cfg.check_metadata_version()?;
Ok(match matches.subcommand() {
("dump-testament", _) => common::dump_testament()?,
("show", Some(c)) => match c.subcommand() {
("active-toolchain", Some(m)) => handle_epipe(show_active_toolchain(cfg, m))?,
("home", Some(_)) => handle_epipe(show_rustup_home(cfg))?,
("profile", Some(_)) => handle_epipe(show_profile(cfg))?,
("keys", Some(_)) => handle_epipe(show_keys(cfg))?,
(_, _) => handle_epipe(show(cfg, c))?,
},
("install", Some(m)) => deprecated("toolchain install", cfg, m, update)?,
("update", Some(m)) => update(cfg, m)?,
("check", Some(_)) => check_updates(cfg)?,
("uninstall", Some(m)) => deprecated("toolchain uninstall", cfg, m, toolchain_remove)?,
("default", Some(m)) => default_(cfg, m)?,
("toolchain", Some(c)) => match c.subcommand() {
("install", Some(m)) => update(cfg, m)?,
("list", Some(m)) => handle_epipe(toolchain_list(cfg, m))?,
("link", Some(m)) => toolchain_link(cfg, m)?,
("uninstall", Some(m)) => toolchain_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("target", Some(c)) => match c.subcommand() {
("list", Some(m)) => handle_epipe(target_list(cfg, m))?,
("add", Some(m)) => target_add(cfg, m)?,
("remove", Some(m)) => target_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("component", Some(c)) => match c.subcommand() {
("list", Some(m)) => handle_epipe(component_list(cfg, m))?,
("add", Some(m)) => component_add(cfg, m)?,
("remove", Some(m)) => component_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("override", Some(c)) => match c.subcommand() {
("list", Some(_)) => handle_epipe(common::list_overrides(cfg))?,
("set", Some(m)) => override_add(cfg, m)?,
("unset", Some(m)) => override_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("run", Some(m)) => run(cfg, m)?,
("which", Some(m)) => which(cfg, m)?,
("doc", Some(m)) => doc(cfg, m)?,
("man", Some(m)) => man(cfg, m)?,
("self", Some(c)) => match c.subcommand() {
("update", Some(_)) => self_update::update(cfg)?,
("uninstall", Some(m)) => self_uninstall(m)?,
(_, _) => unreachable!(),
},
("set", Some(c)) => match c.subcommand() {
("default-host", Some(m)) => set_default_host_triple(cfg, m)?,
("profile", Some(m)) => set_profile(cfg, m)?,
("auto-self-update", Some(m)) => set_auto_self_update(cfg, m)?,
(_, _) => unreachable!(),
},
("completions", Some(c)) => {
if let Some(shell) = c.value_of("shell") {
(output_completion_script(
shell.parse::<Shell>().unwrap(),
c.value_of("command")
.and_then(|cmd| cmd.parse::<CompletionCommand>().ok())
.unwrap_or(CompletionCommand::Rustup),
))?
} else {
unreachable!()
}
}
(_, _) => unreachable!(),
})
}
pub(crate) fn cli() -> App<'static, 'static> {
let mut app = App::new("rustup")
.version(common::version())
.about("The Rust toolchain installer")
.after_help(RUSTUP_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.arg(
verbose_arg("Enable verbose output"),
)
.arg(
Arg::with_name("quiet")
.conflicts_with("verbose")
.help("Disable progress output")
.short("q")
.long("quiet"),
)
.arg(
Arg::with_name("+toolchain")
.help("release channel (e.g. +stable) or custom toolchain to set override")
.validator(|s| {
if s.starts_with('+') {
Ok(())
} else {
Err("Toolchain overrides must begin with '+'".into())
}
}),
)
.subcommand(
SubCommand::with_name("dump-testament")
.about("Dump information about the build")
.setting(AppSettings::Hidden), // Not for users, only CI
)
.subcommand(
SubCommand::with_name("show")
.about("Show the active and installed toolchains or profiles")
.after_help(SHOW_HELP)
.arg(
verbose_arg("Enable verbose output with rustc information for all installed toolchains"),
)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.subcommand(
SubCommand::with_name("active-toolchain")
.about("Show the active toolchain")
.after_help(SHOW_ACTIVE_TOOLCHAIN_HELP)
.arg(
verbose_arg("Enable verbose output with rustc information"),
),
)
.subcommand(
SubCommand::with_name("home")
.about("Display the computed value of RUSTUP_HOME"),
)
.subcommand(SubCommand::with_name("profile").about("Show the current profile"))
.subcommand(SubCommand::with_name("keys").about("Display the known PGP keys")),
)
.subcommand(
SubCommand::with_name("install")
.about("Update Rust toolchains")
.after_help(INSTALL_HELP)
.setting(AppSettings::Hidden) // synonym for 'toolchain install'
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
)
.arg(
Arg::with_name("profile")
.long("profile")
.takes_value(true)
.possible_values(Profile::names())
.required(false),
)
.arg(
Arg::with_name("no-self-update")
.help("Don't perform self-update when running the `rustup install` command")
.long("no-self-update")
.takes_value(false),
)
.arg(
Arg::with_name("force")
.help("Force an update, even if some components are missing")
.long("force")
.takes_value(false),
).arg(
Arg::with_name("force-non-host")
.help("Install toolchains that require an emulator. See https://github.com/rust-lang/rustup/wiki/Non-host-toolchains")
.long("force-non-host")
.takes_value(false)
),
)
.subcommand(
SubCommand::with_name("uninstall")
.about("Uninstall Rust toolchains")
.setting(AppSettings::Hidden) // synonym for 'toolchain uninstall'
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
),
)
.subcommand(
SubCommand::with_name("update")
.about("Update Rust toolchains and rustup")
.aliases(&["upgrade", "up"])
.after_help(UPDATE_HELP)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(false)
.multiple(true),
)
.arg(
Arg::with_name("no-self-update")
.help("Don't perform self update when running the `rustup update` command")
.long("no-self-update")
.takes_value(false),
)
.arg(
Arg::with_name("force")
.help("Force an update, even if some components are missing")
.long("force")
.takes_value(false),
)
.arg(
Arg::with_name("force-non-host")
.help("Install toolchains that require an emulator. See https://github.com/rust-lang/rustup/wiki/Non-host-toolchains")
.long("force-non-host")
.takes_value(false)),
)
.subcommand(SubCommand::with_name("check").about("Check for updates to Rust toolchains and rustup"))
.subcommand(
SubCommand::with_name("default")
.about("Set the default toolchain")
.after_help(DEFAULT_HELP)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(false),
),
)
.subcommand(
SubCommand::with_name("toolchain")
.about("Modify or query the installed toolchains")
.after_help(TOOLCHAIN_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list")
.about("List installed toolchains")
.arg(
verbose_arg("Enable verbose output with toolchain information"),
),
)
.subcommand(
SubCommand::with_name("install")
.about("Install or update a given toolchain")
.aliases(&["update", "add"])
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
)
.arg(
Arg::with_name("profile")
.long("profile")
.takes_value(true)
.possible_values(Profile::names())
.required(false),
)
.arg(
Arg::with_name("no-self-update")
.help(
"Don't perform self update when running the\
`rustup toolchain install` command",
)
.long("no-self-update")
.takes_value(false),
)
.arg(
Arg::with_name("components")
.help("Add specific components on installation")
.long("component")
.short("c")
.takes_value(true)
.multiple(true)
.use_delimiter(true),
)
.arg(
Arg::with_name("targets")
.help("Add specific targets on installation")
.long("target")
.short("t")
.takes_value(true)
.multiple(true)
.use_delimiter(true),
)
.arg(
Arg::with_name("force")
.help("Force an update, even if some components are missing")
.long("force")
.takes_value(false),
)
.arg(
Arg::with_name("allow-downgrade")
.help("Allow rustup to downgrade the toolchain to satisfy your component choice")
.long("allow-downgrade")
.takes_value(false),
)
.arg(
Arg::with_name("force-non-host")
.help("Install toolchains that require an emulator. See https://github.com/rust-lang/rustup/wiki/Non-host-toolchains")
.long("force-non-host")
.takes_value(false)),
)
.subcommand(
SubCommand::with_name("uninstall")
.about("Uninstall a toolchain")
.alias("remove")
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
),
)
.subcommand(
SubCommand::with_name("link")
.about("Create a custom toolchain by symlinking to a directory")
.after_help(TOOLCHAIN_LINK_HELP)
.arg(
Arg::with_name("toolchain")
.help("Custom toolchain name")
.required(true),
)
.arg(
Arg::with_name("path")
.help("Path to the directory")
.required(true),
),
),
)
.subcommand(
SubCommand::with_name("target")
.about("Modify a toolchain's supported targets")
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list")
.about("List installed and available targets")
.arg(
Arg::with_name("installed")
.long("--installed")
.help("List only installed targets"),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("add")
.about("Add a target to a Rust toolchain")
.alias("install")
.arg(Arg::with_name("target").required(true).multiple(true).help(
"List of targets to install; \
\"all\" installs all available targets",
))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("remove")
.about("Remove a target from a Rust toolchain")
.alias("uninstall")
.arg(Arg::with_name("target").required(true).multiple(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
),
)
.subcommand(
SubCommand::with_name("component")
.about("Modify a toolchain's installed components")
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list")
.about("List installed and available components")
.arg(
Arg::with_name("installed")
.long("--installed")
.help("List only installed components"),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("add")
.about("Add a component to a Rust toolchain")
.arg(Arg::with_name("component").required(true).multiple(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
)
.arg(Arg::with_name("target").long("target").takes_value(true)),
)
.subcommand(
SubCommand::with_name("remove")
.about("Remove a component from a Rust toolchain")
.arg(Arg::with_name("component").required(true).multiple(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
)
.arg(Arg::with_name("target").long("target").takes_value(true)),
),
)
.subcommand(
SubCommand::with_name("override")
.about("Modify directory toolchain overrides")
.after_help(OVERRIDE_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list").about("List directory toolchain overrides"),
)
.subcommand(
SubCommand::with_name("set")
.about("Set the override toolchain for a directory")
.alias("add")
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true),
)
.arg(
Arg::with_name("path")
.long("path")
.takes_value(true)
.help("Path to the directory"),
),
)
.subcommand(
SubCommand::with_name("unset")
.about("Remove the override toolchain for a directory")
.after_help(OVERRIDE_UNSET_HELP)
.alias("remove")
.arg(
Arg::with_name("path")
.long("path")
.takes_value(true)
.help("Path to the directory"),
)
.arg(
Arg::with_name("nonexistent")
.long("nonexistent")
.takes_value(false)
.help("Remove override toolchain for all nonexistent directories"),
),
),
)
.subcommand(
SubCommand::with_name("run")
.about("Run a command with an environment configured for a given toolchain")
.after_help(RUN_HELP)
.setting(AppSettings::TrailingVarArg)
.arg(
Arg::with_name("install")
.help("Install the requested toolchain if needed")
.long("install"),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true),
)
.arg(
Arg::with_name("command")
.required(true)
.multiple(true)
.use_delimiter(false),
),
)
.subcommand(
SubCommand::with_name("which")
.about("Display which binary will be run for a given command")
.arg(Arg::with_name("command").required(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("doc")
.alias("docs")
.about("Open the documentation for the current toolchain")
.after_help(DOC_HELP)
.arg(
Arg::with_name("path")
.long("path")
.help("Only print the path to the documentation"),
)
.args(
&DOCS_DATA
.iter()
.map(|(name, help_msg, _)| Arg::with_name(name).long(name).help(help_msg))
.collect::<Vec<_>>(),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
)
.group(
ArgGroup::with_name("page").args(
&DOCS_DATA
.iter()
.map(|(name, _, _)| *name)
.collect::<Vec<_>>(),
),
)
.arg(Arg::with_name("topic").help(TOPIC_ARG_HELP)),
);
if cfg!(not(target_os = "windows")) {
app = app.subcommand(
SubCommand::with_name("man")
.about("View the man page for a given command")
.arg(Arg::with_name("command").required(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
);
}
app = app
.subcommand(
SubCommand::with_name("self")
.about("Modify the rustup installation")
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("update").about("Download and install updates to rustup"),
)
.subcommand(
SubCommand::with_name("uninstall")
.about("Uninstall rustup.")
.arg(Arg::with_name("no-prompt").short("y")),
)
.subcommand(
SubCommand::with_name("upgrade-data")
.about("Upgrade the internal data format."),
),
)
.subcommand(
SubCommand::with_name("set")
.about("Alter rustup settings")
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("default-host")
.about("The triple used to identify toolchains when not specified")
.arg(Arg::with_name("host_triple").required(true)),
)
.subcommand(
SubCommand::with_name("profile")
.about("The default components installed")
.arg(
Arg::with_name("profile-name")
.required(true)
.possible_values(Profile::names())
.default_value(Profile::default_name()),
),
)
.subcommand(
SubCommand::with_name("auto-self-update")
.about("The rustup auto self update mode")
.arg(
Arg::with_name("auto-self-update-mode")
.required(true)
.possible_values(SelfUpdateMode::modes())
.default_value(SelfUpdateMode::default_mode()),
),
),
);
// Clap provides no good way to say that help should be printed in all
// cases where an argument without a default is not provided. The following
// creates lists out all the conditions where the "shell" argument are
// provided and give the default of "rustup". This way if "shell" is not
// provided then the help will still be printed.
let completion_defaults = Shell::variants()
.iter()
.map(|&shell| ("shell", Some(shell), "rustup"))
.collect::<Vec<_>>();
app.subcommand(
SubCommand::with_name("completions")
.about("Generate tab-completion scripts for your shell")
.after_help(COMPLETIONS_HELP)
.setting(AppSettings::ArgRequiredElseHelp)
.arg(Arg::with_name("shell").possible_values(&Shell::variants()))
.arg(
Arg::with_name("command")
.possible_values(&CompletionCommand::variants())
.default_value_ifs(&completion_defaults[..]),
),
)
}
fn verbose_arg<'a, 'b>(help: &'b str) -> Arg<'a, 'b> {
Arg::with_name("verbose")
.help(help)
.takes_value(false)
.short("v")
.long("verbose")
}
fn maybe_upgrade_data(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<bool> {
match m.subcommand() {
("self", Some(c)) => match c.subcommand() {
("upgrade-data", Some(_)) => {
cfg.upgrade_data()?;
Ok(true)
}
_ => Ok(false),
},
_ => Ok(false),
}
}
fn update_bare_triple_check(cfg: &Cfg, name: &str) -> Result<()> {
if let Some(triple) = PartialTargetTriple::new(name) {
warn!("(partial) target triple specified instead of toolchain name");
let installed_toolchains = cfg.list_toolchains()?;
let default = cfg.find_default()?;
let default_name = default.map(|t| t.name().to_string()).unwrap_or_default();
let mut candidates = vec![];
for t in installed_toolchains {
if t == default_name {
continue;
}
if let Ok(desc) = PartialToolchainDesc::from_str(&t) {
fn triple_comp_eq(given: &str, from_desc: Option<&String>) -> bool {
from_desc.map_or(false, |s| *s == *given)
}
let triple_matches = triple
.arch
.as_ref()
.map_or(true, |s| triple_comp_eq(s, desc.target.arch.as_ref()))
&& triple
.os
.as_ref()
.map_or(true, |s| triple_comp_eq(s, desc.target.os.as_ref()))
&& triple
.env
.as_ref()
.map_or(true, |s| triple_comp_eq(s, desc.target.env.as_ref()));
if triple_matches {
candidates.push(t);
}
}
}
match candidates.len() {
0 => err!("no candidate toolchains found"),
1 => writeln!(
process().stdout(),
"\nyou may use the following toolchain: {}\n",
candidates[0]
)?,
_ => {
writeln!(
process().stdout(),
"\nyou may use one of the following toolchains:"
)?;
for n in &candidates {
writeln!(process().stdout(), "{}", n)?;
}
writeln!(process().stdout(),)?;
}
}
bail!(RustupError::ToolchainNotInstalled(name.to_string()));
}
Ok(())
}
fn default_bare_triple_check(cfg: &Cfg, name: &str) -> Result<()> {
if let Some(triple) = PartialTargetTriple::new(name) {
warn!("(partial) target triple specified instead of toolchain name");
let default = cfg.find_default()?;
let default_name = default.map(|t| t.name().to_string()).unwrap_or_default();
if let Ok(mut desc) = PartialToolchainDesc::from_str(&default_name) {
desc.target = triple;
let maybe_toolchain = format!("{}", desc);
let toolchain = cfg.get_toolchain(maybe_toolchain.as_ref(), false)?;
if toolchain.name() == default_name {
warn!(
"(partial) triple '{}' resolves to a toolchain that is already default",
name
);
} else {
writeln!(
process().stdout(),
"\nyou may use the following toolchain: {}\n",
toolchain.name()
)?;
}
return Err(RustupError::ToolchainNotInstalled(name.to_string()).into());
}
}
Ok(())
}
fn default_(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<utils::ExitCode> {
if m.is_present("toolchain") {
let toolchain = m.value_of("toolchain").unwrap();
default_bare_triple_check(cfg, toolchain)?;
let toolchain = cfg.get_toolchain(toolchain, false)?;
let status = if !toolchain.is_custom() {
let distributable = DistributableToolchain::new(&toolchain)?;
Some(distributable.install_from_dist_if_not_installed()?)
} else if !toolchain.exists() && toolchain.name() != "none" {
return Err(RustupError::ToolchainNotInstalled(toolchain.name().to_string()).into());
} else {
None
};
toolchain.make_default()?;
if let Some(status) = status {
writeln!(process().stdout())?;
common::show_channel_update(cfg, toolchain.name(), Ok(status))?;
}
let cwd = utils::current_dir()?;
if let Some((toolchain, reason)) = cfg.find_override(&cwd)? {
info!(
"note that the toolchain '{}' is currently in use ({})",
toolchain.name(),
reason
);
}
} else {
let default_toolchain: Result<String> = cfg
.get_default()?
.ok_or_else(|| anyhow!("no default toolchain configured"));
writeln!(process().stdout(), "{} (default)", default_toolchain?)?;
}
Ok(utils::ExitCode(0))
}
fn check_updates(cfg: &Cfg) -> Result<utils::ExitCode> {
let mut t = term2::stdout();
let channels = cfg.list_channels()?;
for channel in channels {
match channel {
(ref name, Ok(ref toolchain)) => {
let distributable = DistributableToolchain::new(toolchain)?;
let current_version = distributable.show_version()?;
let dist_version = distributable.show_dist_version()?;
let _ = t.attr(term2::Attr::Bold);
write!(t, "{} - ", name)?;
match (current_version, dist_version) {
(None, None) => {
let _ = t.fg(term2::color::RED);
writeln!(t, "Cannot identify installed or update versions")?;
}
(Some(cv), None) => {
let _ = t.fg(term2::color::GREEN);
write!(t, "Up to date")?;
let _ = t.reset();
writeln!(t, " : {}", cv)?;
}
(Some(cv), Some(dv)) => {
let _ = t.fg(term2::color::YELLOW);
write!(t, "Update available")?;
let _ = t.reset();
writeln!(t, " : {} -> {}", cv, dv)?;
}
(None, Some(dv)) => {
let _ = t.fg(term2::color::YELLOW);
write!(t, "Update available")?;
let _ = t.reset();
writeln!(t, " : (Unknown version) -> {}", dv)?;
}
}
}
(_, Err(err)) => return Err(err),
}
}
check_rustup_update()?;
Ok(utils::ExitCode(0))
}
fn update(cfg: &mut Cfg, m: &ArgMatches<'_>) -> Result<utils::ExitCode> {
let self_update_mode = cfg.get_self_update_mode()?;
// Priority: no-self-update feature > self_update_mode > no-self-update args.
// Update only if rustup does **not** have the no-self-update feature,
// and auto-self-update is configured to **enable**
// and has **no** no-self-update parameter.
let self_update = !self_update::NEVER_SELF_UPDATE
&& self_update_mode == SelfUpdateMode::Enable
&& !m.is_present("no-self-update");
let forced = m.is_present("force-non-host");
if let Some(p) = m.value_of("profile") {
let p = Profile::from_str(p)?;
cfg.set_profile_override(p);
}
let cfg = &cfg;
if cfg.get_profile()? == Profile::Complete {
warn!("{}", common::WARN_COMPLETE_PROFILE);
}
if let Some(names) = m.values_of("toolchain") {
for name in names {
update_bare_triple_check(cfg, name)?;
let toolchain_has_triple = match PartialToolchainDesc::from_str(name) {
Ok(x) => x.has_triple(),
_ => false,
};
if toolchain_has_triple {
let host_arch = TargetTriple::from_host_or_build();
if let Ok(partial_toolchain_desc) = PartialToolchainDesc::from_str(name) {
let target_triple = partial_toolchain_desc.resolve(&host_arch)?.target;
if !forced && !host_arch.can_run(&target_triple)? {
err!("DEPRECATED: future versions of rustup will require --force-non-host to install a non-host toolchain as the default.");
warn!(
"toolchain '{}' may not be able to run on this system.",
name
);
warn!(
"If you meant to build software to target that platform, perhaps try `rustup target add {}` instead?",
target_triple.to_string()
);
}
}
}
let toolchain = cfg.get_toolchain(name, false)?;
let status = if !toolchain.is_custom() {
let components: Vec<_> = m
.values_of("components")
.map(|v| v.collect())
.unwrap_or_else(Vec::new);
let targets: Vec<_> = m
.values_of("targets")
.map(|v| v.collect())
.unwrap_or_else(Vec::new);
let distributable = DistributableToolchain::new(&toolchain)?;
Some(distributable.install_from_dist(
m.is_present("force"),
m.is_present("allow-downgrade"),