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Suppressing the Juliaup outdated Julia version message #1256

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#1258
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Suppressing the Juliaup outdated Julia version message#1256
#1258
@asinghvi17

Description

@asinghvi17
asinghvi17
opened on Sep 27, 2025

When running Julia in applications that look for stderr output as indications of errors, this Juliaup output can become highly annoying.

juliaup/src/bin/julialauncher.rs

Lines 482 to 508 in 5cc3c1b

JuliaupConfigChannel::DirectDownloadChannel {
path,
url: _,
local_etag,
server_etag,
version: _,
} => {
if local_etag != server_etag {
if channel.starts_with("nightly") {
// Nightly is updateable several times per day so this message will show
// more often than not unless folks update a couple of times a day.
// Also, folks using nightly are typically more experienced and need
// less detailed prompting
eprintln!(
"A new `nightly` version is available. Install with `juliaup update`."
);
} else {
eprintln!(
"A new version of Julia for the `{}` channel is available. Run:",
channel
);
eprintln!();
eprintln!(" juliaup update");
eprintln!();
eprintln!("to install the latest Julia for the `{}` channel.", channel);
}
}

Would it be possible to control that via ENV variable? If such a PR is welcomed I can whip something up.

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