# Latest

**URL:** https://discourse.julialang.org/latest.md?page=22

[Latest](https://discourse.julialang.org/latest.md) · [Categories](https://discourse.julialang.org/categories.md) · [Tags](https://discourse.julialang.org/tags.md)

**Page:** 23

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## [\[ANN\]: PhaseTypeDistributions.jl, PhaseTypeDistributionsFitting.jl (and FixedSparsityMatrices.jl)](https://discourse.julialang.org/t/ann-phasetypedistributions-jl-phasetypedistributionsfitting-jl-and-fixedsparsitymatrices-jl/137631)

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**Author:** [@yoninazarathy](https://discourse.julialang.org/u/yoninazarathy)\
**Replies:** 1\
**Last updated:** [June 25, 2026, 10:27am UTC](https://discourse.julialang.org/t/ann-phasetypedistributions-jl-phasetypedistributionsfitting-jl-and-fixedsparsitymatrices-jl/137631 "2026-06-25T10:27:55Z")

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We’re happy to announce two new packages for phase-type (PH) distributions, plus a supporting third package for structured matrices (which may be useful in its own right). A phase-type distribution is the distribution o…

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## [Sensitivity Analysis on ODE system](https://discourse.julialang.org/t/sensitivity-analysis-on-ode-system/137757)

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**Author:** [@violabini](https://discourse.julialang.org/u/violabini)\
**Replies:** 4\
**Last updated:** [June 25, 2026, 9:40am UTC](https://discourse.julialang.org/t/sensitivity-analysis-on-ode-system/137757 "2026-06-25T09:40:40Z")

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Hi everyone, I am trying to use automatic differentiation in julia to compute the Jacobian of my outputs wrt my design variables for local sensitivity, but my ODEs are nearly coupled as for example du\[3\]=A\*du\[2\]+B u\[1\].…

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## [How to Create Global Parameters in ModelingToolkit.jl](https://discourse.julialang.org/t/how-to-create-global-parameters-in-modelingtoolkit-jl/60065)

<div class="topic-metadata">

**Author:** [@Brad\_Carman](https://discourse.julialang.org/u/Brad_Carman)\
**Replies:** 6\
**Last updated:** [June 25, 2026, 9:37am UTC](https://discourse.julialang.org/t/how-to-create-global-parameters-in-modelingtoolkit-jl/60065 "2026-06-25T09:37:00Z")

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Is it possible to create global parameters? For example, when modeling a gas or fluid, it would be convenient to define them globally, similar to how is done in SimScape with a domain definition. I attempted to create …

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## [A package with multiple support for multiple GPU types](https://discourse.julialang.org/t/a-package-with-multiple-support-for-multiple-gpu-types/137789)

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**Author:** [@BananaMaster3](https://discourse.julialang.org/u/BananaMaster3)\
**Replies:** 3\
**Last updated:** [June 25, 2026, 4:00am UTC](https://discourse.julialang.org/t/a-package-with-multiple-support-for-multiple-gpu-types/137789 "2026-06-25T04:00:08Z")

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Hey all! I’m currently working on a package that uses the GPU. Being a good citizen, I’m adding support for different pipelines (via KernelAbstractions.jl, if that helps). How should I architect this in the package? I …

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## [Opinions on SPy?](https://discourse.julialang.org/t/opinions-on-spy/137591)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 6\
**Last updated:** [June 24, 2026, 6:22pm UTC](https://discourse.julialang.org/t/opinions-on-spy/137591 "2026-06-24T18:22:10Z")

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Had anyone tried SPy, yet another python-like interpreter/compiler (motivations here) ? What’s your thoughts about it ?

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## [Solver differences between sim!(::SimModel) and sim!(::PredictiveController) in ModelPredictiveControl.jl](https://discourse.julialang.org/t/solver-differences-between-sim-simmodel-and-sim-predictivecontroller-in-modelpredictivecontrol-jl/120819)

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**Author:** [@Bart\_van\_de\_Lint](https://discourse.julialang.org/u/Bart_van_de_Lint)\
**Replies:** 19\
**Last updated:** [June 24, 2026, 5:15pm UTC](https://discourse.julialang.org/t/solver-differences-between-sim-simmodel-and-sim-predictivecontroller-in-modelpredictivecontrol-jl/120819 "2026-06-24T17:15:12Z")

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I am trying to use NMPC in ModelPredictiveControl.jl, but while my model runs with sim!(model) it gets a boundserror with sim!(nmpc). To try to find out what is going on, I tried to run the two sim! functions on a simpl…

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## [Precompiling package extensions?](https://discourse.julialang.org/t/precompiling-package-extensions/137728)

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**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 16\
**Last updated:** [June 24, 2026, 10:14am UTC](https://discourse.julialang.org/t/precompiling-package-extensions/137728 "2026-06-24T10:14:55Z")

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Is it possible to precompile code in package extensions with PrecompileTools.jl? Say I have a package Foo.jl with an extension FooMakieExt.jl for Makie.jl recipes. I would liike to write precompile workloads that would …

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## [Forem problems](https://discourse.julialang.org/t/forem-problems/137762)

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**Author:** [@oheil](https://discourse.julialang.org/u/oheil)\
**Replies:** 1\
**Last updated:** [June 24, 2026, 10:13am UTC](https://discourse.julialang.org/t/forem-problems/137762 "2026-06-24T10:13:38Z")

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A few weeks ago, Forem (https://forem.julialang.org/) was updated to the latest version. Since then, I’ve been having significant problems using and moderating the platform. In my moderation work, I keep encountering th…

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## [How does JETLS.jl cache/index external package symbols and docs?](https://discourse.julialang.org/t/how-does-jetls-jl-cache-index-external-package-symbols-and-docs/137611)

<div class="topic-metadata">

**Author:** [@askvorts](https://discourse.julialang.org/u/askvorts)\
**Replies:** 4\
**Last updated:** [June 24, 2026, 8:25am UTC](https://discourse.julialang.org/t/how-does-jetls-jl-cache-index-external-package-symbols-and-docs/137611 "2026-06-24T08:25:34Z")

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I maintain a VS Code–based editor that bundles a fork of julia-vscode. We currently don’t start LanguageServer.jl, partly to avoid SymbolServer.jl’s large serialized symbol cache and a fragile re-indexing path. We’re als…

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## [What's a good prompt for AI agents running Julia numerical simulation tests](https://discourse.julialang.org/t/whats-a-good-prompt-for-ai-agents-running-julia-numerical-simulation-tests/137766)

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**Author:** [@YiboXia](https://discourse.julialang.org/u/YiboXia)\
**Replies:** 2\
**Last updated:** [June 23, 2026, 7:51pm UTC](https://discourse.julialang.org/t/whats-a-good-prompt-for-ai-agents-running-julia-numerical-simulation-tests/137766 "2026-06-23T19:51:19Z")

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Hi guys， Recently I have been using an AI coding agent(claude code) to do some numerical simulation test. The agent frequently crashes the run in many cases, for example with julia -e "..." Does anyone have some reliab…

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## [Use \`Core.stdout\` and \`Core.stderr\` per default](https://discourse.julialang.org/t/use-core-stdout-and-core-stderr-per-default/134256)

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**Author:** [@PatrickHaecker](https://discourse.julialang.org/u/PatrickHaecker)\
**Replies:** 1\
**Last updated:** [June 23, 2026, 3:26pm UTC](https://discourse.julialang.org/t/use-core-stdout-and-core-stderr-per-default/134256 "2026-06-23T15:26:37Z")

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When using the --trim functionality, it quickly becomes inconvenient to always write the io to be Core.stdout when the non-trimmable Base.stdout was so convient as the default parameter (I focus here on stdout, but the s…

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## [Julia-snail in Emacs and multithreading](https://discourse.julialang.org/t/julia-snail-in-emacs-and-multithreading/137761)

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**Author:** [@mahmah](https://discourse.julialang.org/u/mahmah)\
**Replies:** 1\
**Last updated:** [June 23, 2026, 2:12pm UTC](https://discourse.julialang.org/t/julia-snail-in-emacs-and-multithreading/137761 "2026-06-23T14:12:33Z")

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How to set up julia-snail so that it launches julia as -t auto? Thanks!

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## [Julia security advisories](https://discourse.julialang.org/t/julia-security-advisories/65163)

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**Author:** [@nsslh](https://discourse.julialang.org/u/nsslh)\
**Replies:** 24\
**Last updated:** [June 23, 2026, 2:04pm UTC](https://discourse.julialang.org/t/julia-security-advisories/65163 "2026-06-23T14:04:08Z")

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Hi folks, How should I subscribe for Julia security advisories? At the moment, I’m watching for updates to the Julia image on Docker Hub. I need to do better, both in terms of latency and detail. Thanks, Sheldon.

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## [ANN: 🎓🏗️ Course website template based on Computational Thinking @ MIT](https://discourse.julialang.org/t/ann-course-website-template-based-on-computational-thinking-mit/137004)

<div class="topic-metadata">

**Author:** [@fonsp](https://discourse.julialang.org/u/fonsp)\
**Replies:** 7\
**Last updated:** [June 23, 2026, 9:55am UTC](https://discourse.julialang.org/t/ann-course-website-template-based-on-computational-thinking-mit/137004 "2026-06-23T09:55:35Z")

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Are you using Julia to teach a course? The Pluto team would like to announce computational-thinking-template, a repository template for building awesome looking course websites! It features a sidebar, a colorful homepage…

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## [Certificate failure with Zscaler](https://discourse.julialang.org/t/certificate-failure-with-zscaler/137745)

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**Author:** [@johnh](https://discourse.julialang.org/u/johnh)\
**Replies:** 4\
**Last updated:** [June 23, 2026, 9:08am UTC](https://discourse.julialang.org/t/certificate-failure-with-zscaler/137745 "2026-06-23T09:08:29Z")

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My company has recently switched to using Zscaler On my Windows laptop I use WSL juliaup update WARNING: cannot verify julialang-s3.julialang.org’s certificate, issued by ‘CN=Zscaler\_Trust.xxx.com (t)\\ ,OU=IT,O=XXX,…

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## [Memory blow-up when solving a sparse affine Hermitian SDP translated from YALMIP to JuMP](https://discourse.julialang.org/t/memory-blow-up-when-solving-a-sparse-affine-hermitian-sdp-translated-from-yalmip-to-jump/137744)

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**Author:** [@hz-xiaxz](https://discourse.julialang.org/u/hz-xiaxz)\
**Replies:** 10\
**Last updated:** [June 23, 2026, 7:24am UTC](https://discourse.julialang.org/t/memory-blow-up-when-solving-a-sparse-affine-hermitian-sdp-translated-from-yalmip-to-jump/137744 "2026-06-23T07:24:42Z")

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Hi JuMP developers, I am translating a MATLAB/YALMIP semidefinite program to Julia/JuMP + MosekTools. The model comes from a many-body bootstrap calculation. The MATLAB/YALMIP version can solve a small 3 x 3 lattice cas…

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## [Security PSA: 16 Advisories in HTTP.jl (Please upgrade to 2.4.0)](https://discourse.julialang.org/t/security-psa-16-advisories-in-http-jl-please-upgrade-to-2-4-0/137705)

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**Author:** [@Keno](https://discourse.julialang.org/u/Keno)\
**Replies:** 2\
**Last updated:** [June 23, 2026, 6:02am UTC](https://discourse.julialang.org/t/security-psa-16-advisories-in-http-jl-please-upgrade-to-2-4-0/137705 "2026-06-23T06:02:34Z")

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We are in the process of publishing 16 advisories in HTTP.jl all of them fixed in the just-released HTTP.jl 2.4.0. See the SecurityAdvisories.jl repo (Publish HTTP.jl security advisories - Pull Request #549 - JuliaLang/S…

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## [Rocket.jl now interoperates with Observables.jl (and Makie) | v1.9.0](https://discourse.julialang.org/t/rocket-jl-now-interoperates-with-observables-jl-and-makie-v1-9-0/137680)

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**Author:** [@bvdmitri](https://discourse.julialang.org/u/bvdmitri)\
**Replies:** 1\
**Last updated:** [June 22, 2026, 8:19pm UTC](https://discourse.julialang.org/t/rocket-jl-now-interoperates-with-observables-jl-and-makie-v1-9-0/137680 "2026-06-22T20:19:46Z")

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Hi all, Rocket.jl is a reactive programming library for Julia, directly inspired by RxJS/ReactiveX — observables, subjects, schedulers, and a large set of composable operators (map, filter, scan, combine\_latest, throttl…

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## [\[pre-ANN\] RestClient.jl](https://discourse.julialang.org/t/pre-ann-restclient-jl/123828)

<div class="topic-metadata">

**Author:** [@tecosaur](https://discourse.julialang.org/u/tecosaur)\
**Replies:** 30\
**Last updated:** [June 22, 2026, 5:51pm UTC](https://discourse.julialang.org/t/pre-ann-restclient-jl/123828 "2026-06-22T17:51:09Z")

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Don’t stress about web APIs I’ve had to deal with a bunch of Web APIs as of late, and because I was getting fed up with the boilerplate I’ve put together RestClient.jl, which aims to make interfacing with Web APIs as …

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## [Debugger stopped working in VSCode?](https://discourse.julialang.org/t/debugger-stopped-working-in-vscode/137727)

<div class="topic-metadata">

**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 2\
**Last updated:** [June 22, 2026, 5:23pm UTC](https://discourse.julialang.org/t/debugger-stopped-working-in-vscode/137727 "2026-06-22T17:23:23Z")

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The debugger in VSCode stopped working for me recently. I am not sure if the problem was introduced in Julia v1.11 or Julia v1.12. Whenever I call @enter fun(arg...) in the REPL the debugger is launched, but I can’t step…

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## [Positron and Julia: a short history of a long-awaited integration effort](https://discourse.julialang.org/t/positron-and-julia-a-short-history-of-a-long-awaited-integration-effort/137651)

<div class="topic-metadata">

**Author:** [@karei](https://discourse.julialang.org/u/karei)\
**Replies:** 13\
**Last updated:** [June 22, 2026, 2:07pm UTC](https://discourse.julialang.org/t/positron-and-julia-a-short-history-of-a-long-awaited-integration-effort/137651 "2026-06-22T14:07:13Z")

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This post may have gone off-topic and lacks a clear point of view.

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## [Fieldnames for an instance of a structure](https://discourse.julialang.org/t/fieldnames-for-an-instance-of-a-structure/137701)

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**Author:** [@Boris](https://discourse.julialang.org/u/Boris)\
**Replies:** 6\
**Last updated:** [June 22, 2026, 11:42am UTC](https://discourse.julialang.org/t/fieldnames-for-an-instance-of-a-structure/137701 "2026-06-22T11:42:30Z")

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Hi, been a while since I have asked a dumb question in New to Julia so here we go. Is there a way to define the function fieldnamesor similar to give me the field names for an instance of a structure? I would like to se…

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## [Why does ForwardDiff.jl give me all-zero Jacobian matrix?](https://discourse.julialang.org/t/why-does-forwarddiff-jl-give-me-all-zero-jacobian-matrix/137714)

<div class="topic-metadata">

**Author:** [@Xu\_Shan](https://discourse.julialang.org/u/Xu_Shan)\
**Replies:** 5\
**Last updated:** [June 22, 2026, 7:45am UTC](https://discourse.julialang.org/t/why-does-forwarddiff-jl-give-me-all-zero-jacobian-matrix/137714 "2026-06-22T07:45:14Z")

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Hi guys, I am using one Julia-based model from https://github.com/LandEcosystems/Sindbad.jl, and tries to use ForwardDiff.jl to calculate the Jacobian of the cost function to the optimized parameters. I run the pipeline…

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## [SciML: Issues using \`GaussAdjoint\` on an \`EnsembleProblem\` with callbacks](https://discourse.julialang.org/t/sciml-issues-using-gaussadjoint-on-an-ensembleproblem-with-callbacks/137503)

<div class="topic-metadata">

**Author:** [@LucasGrasso](https://discourse.julialang.org/u/LucasGrasso)\
**Replies:** 11\
**Last updated:** [June 21, 2026, 8:30pm UTC](https://discourse.julialang.org/t/sciml-issues-using-gaussadjoint-on-an-ensembleproblem-with-callbacks/137503 "2026-06-21T20:30:04Z")

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Hello there, I am rather new to Julia, and I am trying to implement a Neural ODE model that relies on event callbacks to terminate integration. I am using the GaussAdjoint, given that it supports callbacks and that it w…

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## [QML.jl 0.13](https://discourse.julialang.org/t/qml-jl-0-13/137733)

<div class="topic-metadata">

**Author:** [@barche](https://discourse.julialang.org/u/barche)\
**Replies:** 2\
**Last updated:** [June 21, 2026, 8:20pm UTC](https://discourse.julialang.org/t/qml-jl-0-13/137733 "2026-06-21T20:20:59Z")

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It has been a while since a new version of QML.jl was announced here, so here are some highlights of the latest release, some of which were already present in previous unannounced versions: Support for the newest Makie…

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## [\[ANN\] BaseDirs.jl (was XDG)](https://discourse.julialang.org/t/ann-basedirs-jl-was-xdg/95953)

<div class="topic-metadata">

**Author:** [@tecosaur](https://discourse.julialang.org/u/tecosaur)\
**Replies:** 5\
**Last updated:** [June 21, 2026, 2:26pm UTC](https://discourse.julialang.org/t/ann-basedirs-jl-was-xdg/95953 "2026-06-21T14:26:58Z")

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After much indecision regarding the package name, BaseDirs is finally registered! :partying\_face: See the Pre-ANN/RFC thread for a recap on what the package is, but the TLDR; is it provides a cross-platform way of findi…

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## [\[ANN\] Update to TruncatedDistributions.jl](https://discourse.julialang.org/t/ann-update-to-truncateddistributions-jl/137729)

<div class="topic-metadata">

**Author:** [@yoninazarathy](https://discourse.julialang.org/u/yoninazarathy)\
**Replies:** 0\
**Last updated:** [June 21, 2026, 12:08pm UTC](https://discourse.julialang.org/t/ann-update-to-truncateddistributions-jl/137729 "2026-06-21T12:08:00Z")

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I’m happy to announce a substantial update to TruncatedDistributions.jl, now at 0.3.0. The package has been around for a couple of years, but was fairly bare. It now gives solid support for the truncated multivariate no…

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## [\[ANN\] MakieControlPlots](https://discourse.julialang.org/t/ann-makiecontrolplots/137718)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 1\
**Last updated:** [June 21, 2026, 6:56am UTC](https://discourse.julialang.org/t/ann-makiecontrolplots/137718 "2026-06-21T06:56:39Z")

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We ported our package, ControlPlots, to use Makie as its backend. This removes the dependency on Python. It comes with a GUI for interactive exploration of the plot, similar to Matplotlib: MakieControlPlots offers: …

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## [Cannot precompile LanguageServer in julia1.10.6 on win11](https://discourse.julialang.org/t/cannot-precompile-languageserver-in-julia1-10-6-on-win11/137723)

<div class="topic-metadata">

**Author:** [@York](https://discourse.julialang.org/u/York)\
**Replies:** 1\
**Last updated:** [June 21, 2026, 4:28am UTC](https://discourse.julialang.org/t/cannot-precompile-languageserver-in-julia1-10-6-on-win11/137723 "2026-06-21T04:28:47Z")

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I cannot precompile my julia 1.10.6 LanuageServer in my new win11. Could you tell me what the problem is? I tried reinstalling Julia, but that didn’t solve it. Run in julia REPL using Pkg Pkg.precompile() Precompiling …

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## [How to update a gitlab-hosted package in General registry?](https://discourse.julialang.org/t/how-to-update-a-gitlab-hosted-package-in-general-registry/137457)

<div class="topic-metadata">

**Author:** [@Vasily\_Pisarev](https://discourse.julialang.org/u/Vasily_Pisarev)\
**Replies:** 5\
**Last updated:** [June 20, 2026, 9:33pm UTC](https://discourse.julialang.org/t/how-to-update-a-gitlab-hosted-package-in-general-registry/137457 "2026-06-20T21:33:03Z")

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I want to update the registry record for a package hosted on gitlab.com for which I have an owner role although the repo is not under my account. I have tried to do so via juliahub.com but after I confirm OAuth access I …

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