favicon here hometagsblogmicrobio cvtech cvgpg keys

Juliaup is the next generation version manager for Julia

Soc Virnyl Estela | 2023-05-16 | reading time: ~3min

The Julia programming language has gained more improvements over the years. The latest version as of writing is 1.9.0 - one of the biggest improvements of Julia in the 1.x series. Hoping more to come!

What is Juliaup?§

juliaup is a version manager for Julia much like pyenv or rbenv. It's functionality closely aligns with rustup.

If you want to know more, check out their github repository at https://github.com/JuliaLang/juliaup.

Why should you use Juliaup?§

The usual way of downloading release binaries at the official website is not really much of a hassle. However, downloading different versions of Julia can take more time to browse around.

There are two version managers for Julia: jill.py and juliaup.

As you may have noticed, jill.py is a python script that installs Julia and juliaup is written in Rust. I cannot compare their differences as I never tried the former. I suggest you try either one of them.

Installing a Julia release channel in juliaup is quite easy. To check available channels, you run juliaup list. To add a channel, say 1.5.0, you run juilaup add 1.5.1. To make a channel the default, you run juliaup default 1.5.0.

For me, you should use juliaup since it includes features such as the ability to run a version (as long as it is added) using their own Julia caller called julialauncher. You can symlink or alias that as julia. For example, if you want to run version 1.6.0, you can do so by running julialauncher +1.6.0 or julia +1.6.0.

There is plan in the future releases to make a duplicate launcher of julialauncher that is called julia. I do believe it will just add more confusion though. I just symlink it instead. But that is because juliaup has not been hosted yet on crates.io. See issue #639.

Anything to improve?§

I think a feature I want to have in juliaup is this one - https://github.com/JuliaLang/juliaup/issues/10. I do think that the idea of having juliaup.toml in the root directory of a project is convenient. Rust does that with rust-toolchain.toml. But again, it is up to debate because there were some issues of maybe duplicating the functionality of Project.toml and Manifest.toml and selecting the version inside those two configuration files mitigates that issue rather than using juliaup.toml. The workaround for now is to use the JULIAUP_CHANNEL environmental variable with direnv or whatever env "manipulation" tool you use.

Again, if you want to explore juliaup, you can do so by checking first the repository at https://github.com/JuliaLang/juliaup.

If you use openSUSE, just run sudo zypper in juliaup and you are good to go.

Articles from blogs I follow around the net

Leaktracer: A Rust allocator to trace memory allocations

A few days ago, I had a memory issue in one of my Rust applications. The application was huge, and for some reason the memory kept growing with hundreds of gigabytes of memory allocated, but I couldn't find the source of the leak. Of course I know there…

via Christian Visintin BlogJune 26, 2025

Status update, June 2025

Hi all! This month, two large patch series have been merged into wlroots! The first one is toplevel capture, which will allow tools such as grim and xdg-desktop-portal-wlr to capture the contents of a specific window. The wlroots side is super simple becau…

via emersionJune 20, 2025

Contra Ptacek's Terrible Article On AI

A few days ago, I was presented with an article titled “My AI Skeptic Friends Are All Nuts” by Thomas Ptacek. I thought it was not very good, and didn't give it a second thought. To quote the formidable Baldur Bjarnason: “I don’t recommend reading it, but…

via LudicityJune 19, 2025

Exploiting Erlang OTP with Zip files: CVE-2025-4748

There’s a new Erlang OTP vulnerability, CVE-2025-4748. It’s an Absolute Path Traversal vulnerability involving a Zip archive, which I have a lot of practice with. It affects Erlang OTP, which a coworker has already written about recently and noted the nece…

via GreyNoise LabsJune 17, 2025

Furries Need To Learn That Sunlight Is The Best Disinfectant

Next month, AMC+ is premiering a new series about furries that tracked down sexual abusers hiding within the furry fandom. It’s called, The Furry Detectives: Unmasking A Monster. You can watch the trailer for this below. And I do recommend watching the tra…

via Dhole MomentsJune 12, 2025

Unionize or die

Tech workers have long resisted the suggestion that we should be organized into unions. The topic is consistently met with a cold reception by tech workers when it is raised, and no big tech workforce is meaningfully organized. This is a fatal mistake – an…

via Drew DeVault's blogJune 09, 2025

#FckICE 2025 - cumulative leaks and data

let the games begin

via maia blogJune 09, 2025

Recently

A little late on this one, but I got around to it! Reading I got stuck on two books: books that I want to enjoy but can’t get any momentum on. So my reading “stats” are suffering and this is a light year for books so far. But I switched gears to read Gla…

via macwright.comJune 06, 2025

Elevate hover/focus effects with transitions across multiple elements

You can elevate hover/focus effects by triggering transitions on more than one element. With the right orchestration, you can create more nuanced effects.

via Rob O'Leary | BlogJune 01, 2025

Generative AI will probably make blogs better

Generative AI will probably make blogs better. Have you ever searched for something on Google and found the first one, two, or three blog posts to be utter nonsense? That's because these blog posts have been optimized not for human consumption, but rather …

via pcloadletterMay 30, 2025

The everlasting now

Continuing the experiment. My first post in this series was manually crafted, but coding a static almost-a-site generator, without having to worry about all the interrelationships on the old site was quick, & in Rust terms at least, relatively easy. This i…

via Mike KreuzerMay 23, 2025

The Date that wasn't

A tale of lakes, dates and random results.

via Technically PersonalMay 03, 2025

Body::poll_progress

This describes a proposal for a cancelation problem with hyper’s request and response bodies. hyper is an HTTP library for the Rust language. Background: what is the Body trait? The Body trait used by hyper is meant to represent a potentially streaming (…

via seanmonstarApril 22, 2025

#Rx Writing Challenge 2025

This is a short reflection on my experience of the recent writing challenge I took part in. Over the past two weeks, I have participated in the #RxWritingChallenge 1—a daily, 30-minute writing group starting at 9 AM every morning. Surrounded by fellow doct…

via Ul-lingaApril 05, 2025

My coffee workflow

My coffee workflow by Clement Delafargue on April 1, 2025 Tagged as: coffee, espresso, flair58, v60. It is my first April cools’ and I guess I could start by talking about coffee. If you’ve seen me in person, it won’t be a surprise, I guess. This po…

via Clément Delafargue - RSS feedApril 01, 2025

LLDB's TypeSystems: An Unfinished Interface

Well, it's "done". TypeSystemRust has a (semi) working prototype for LLDB 19.x. It doesn't support expressions or MSVC targets (i.e. PDB debug info), and there are a whole host of catastrophic crashes, but it more or less proves what it needs to: Rust's de…

via Cracking the ShellMarch 28, 2025

Simple Web Augmented Generation

A guide to building a simple web application using augmented generation.

via Ishan WritesMarch 10, 2025

Backup Yubikey Strategy

After a local security meetup where I presented about Webauthn, I had a really interesting chat with a member about a possible Yubikey management strategy. Normally when you purchase a yubikey it's recommended that you buy two of them - one primary and one…

via Firstyear's blog-a-logFebruary 28, 2025

Generated by openring-rs

favicon here hometagsblogmicrobio cvtech cvgpg keys