# Latest

**URL:** https://discourse.julialang.org/latest.md?page=88

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

**Page:** 89

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## [Is it safe to broadcast \`setindex!\` with views of the same array?](https://discourse.julialang.org/t/is-it-safe-to-broadcast-setindex-with-views-of-the-same-array/133620)

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**Author:** [@Sevi](https://discourse.julialang.org/u/Sevi)\
**Replies:** 4\
**Last updated:** [November 3, 2025, 4:53pm UTC](https://discourse.julialang.org/t/is-it-safe-to-broadcast-setindex-with-views-of-the-same-array/133620 "2025-11-03T16:53:25Z")

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I tried to find out looking here and through the documentation, but I couldn’t find a concrete answer so far: Is it safe to re-order array elements in-place using a view into the same array, like so: julia\> A = rand(10…

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## [How to make the double parallelization in the CMAEvolutionStrategy.jl?](https://discourse.julialang.org/t/how-to-make-the-double-parallelization-in-the-cmaevolutionstrategy-jl/133611)

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**Author:** [@Xu\_Shan](https://discourse.julialang.org/u/Xu_Shan)\
**Replies:** 5\
**Last updated:** [November 3, 2025, 2:38pm UTC](https://discourse.julialang.org/t/how-to-make-the-double-parallelization-in-the-cmaevolutionstrategy-jl/133611 "2025-11-03T14:38:34Z")

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Hi, I’m wondering whether it’s possible to combine parallelization inside the cost function with the parallel evaluation across the CMA-ES population (CMAEvolutionStrategy.jl). Here’s my situation: I’m optimizing mode…

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## [ERROR: Error building \`RCall\`:](https://discourse.julialang.org/t/error-error-building-rcall/102450)

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**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\
**Replies:** 1\
**Last updated:** [November 3, 2025, 10:57am UTC](https://discourse.julialang.org/t/error-error-building-rcall/102450 "2025-11-03T10:57:36Z")

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I’m getting this error (below) when trying to build RCall. it suggest Try adding /Library/Frameworks/R.framework/Resources/lib to the "LD\_LIBRARY\_PATH" environmental variable but i don’t know how to do. Can someone tel…

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## [WSL 1 vs WSL 2](https://discourse.julialang.org/t/wsl-1-vs-wsl-2/133599)

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**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 5\
**Last updated:** [November 3, 2025, 3:26am UTC](https://discourse.julialang.org/t/wsl-1-vs-wsl-2/133599 "2025-11-03T03:26:26Z")

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I’m curious which you use since Julia only supports WSL 2 (tier 2), but I think works for both. Note, WSL 1 still supported, and neither is clearly better. " WSL 2 is “20x faster compared to WSL 1” for file access, but …

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## [How does the j\_xx function generated?](https://discourse.julialang.org/t/how-does-the-j-xx-function-generated/133590)

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**Author:** [@envyslee](https://discourse.julialang.org/u/envyslee)\
**Replies:** 7\
**Last updated:** [November 2, 2025, 11:46pm UTC](https://discourse.julialang.org/t/how-does-the-j-xx-function-generated/133590 "2025-11-02T23:46:39Z")

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Julia 1.12.1 LLVM 18.1.0 When I build Julia, it runs command “./julia-debug -O0 -C “native” --output-o path/basecompiler-debug-o.a.tmp --startup-file=no --warn-overwrite=yes -g1 Base\_compiler.jl --buildroot ./ --dataro…

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## [Makie Poly Tooltips issue](https://discourse.julialang.org/t/makie-poly-tooltips-issue/133606)

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**Author:** [@AUK1939](https://discourse.julialang.org/u/AUK1939)\
**Replies:** 2\
**Last updated:** [November 2, 2025, 10:06pm UTC](https://discourse.julialang.org/t/makie-poly-tooltips-issue/133606 "2025-11-02T22:06:49Z")

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I can’t seem to get makie tooltips working for Poly objects. Here is a MWE using GLMakie using GLMakie.Makie.GeometryBasics f = Figure() Axis(f\[1, 1\], aspect = DataAspect()) # shape decomposition with custom tooltip …

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## [Juliaup likely corrupted, no longer works for 1.12 (only) for me](https://discourse.julialang.org/t/juliaup-likely-corrupted-no-longer-works-for-1-12-only-for-me/133184)

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**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 7\
**Last updated:** [November 2, 2025, 7:54pm UTC](https://discourse.julialang.org/t/juliaup-likely-corrupted-no-longer-works-for-1-12-only-for-me/133184 "2025-11-02T19:54:40Z")

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I had a problem, and now a new one, very likely related. For a while now I’ve gotten (and for RCs, that I could run): $ juliaup default 1.12 Configured the default Julia version to be '1.12'. but it wasn’t working (I …

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## [Molly.jl - trying to understand di-atomic example](https://discourse.julialang.org/t/molly-jl-trying-to-understand-di-atomic-example/133430)

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**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 19\
**Last updated:** [November 2, 2025, 5:41pm UTC](https://discourse.julialang.org/t/molly-jl-trying-to-understand-di-atomic-example/133430 "2025-11-02T17:41:47Z")

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Thanks for lots of help on previous Molly.jl questions. I’m trying to understand the " Simulating diatomic molecules example. I have re-structured the example to attempt to figure out the key ideas. See below (I skipped…

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## [How to color points in scatter plot by value?](https://discourse.julialang.org/t/how-to-color-points-in-scatter-plot-by-value/11740)

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**Author:** [@e3c6](https://discourse.julialang.org/u/e3c6)\
**Replies:** 23\
**Last updated:** [November 2, 2025, 4:26pm UTC](https://discourse.julialang.org/t/how-to-color-points-in-scatter-plot-by-value/11740 "2025-11-02T16:26:24Z")

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I have a list of 3-dimensional points. I want to plot them in a plane scatter plot (using the first two-dimensions), and then color each point according to the third value. How can I do this?

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## [Modelling collisions of agents with the environment in discrete time](https://discourse.julialang.org/t/modelling-collisions-of-agents-with-the-environment-in-discrete-time/133229)

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**Author:** [@simonsteiger](https://discourse.julialang.org/u/simonsteiger)\
**Replies:** 1\
**Last updated:** [November 2, 2025, 2:00pm UTC](https://discourse.julialang.org/t/modelling-collisions-of-agents-with-the-environment-in-discrete-time/133229 "2025-11-02T14:00:09Z")

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Hi everyone, I am new to agent-based modelling and have recently started using Agents.jl for a research project. Thanks a lot for this great package! The model should simulate how (for example) coconuts disperse throug…

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## [Fail to register: "Project file should contain name, uuid and version"](https://discourse.julialang.org/t/fail-to-register-project-file-should-contain-name-uuid-and-version/133587)

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**Author:** [@AliceandBob](https://discourse.julialang.org/u/AliceandBob)\
**Replies:** 3\
**Last updated:** [November 2, 2025, 1:53pm UTC](https://discourse.julialang.org/t/fail-to-register-project-file-should-contain-name-uuid-and-version/133587 "2025-11-02T13:53:03Z")

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Error while trying to register: “Project file should contain name, uuid and version” Zou-Bo/MomentumED.jl@18103e1

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## [Neovim + lsp + formatter (again)](https://discourse.julialang.org/t/neovim-lsp-formatter-again/132800)

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**Author:** [@benkj](https://discourse.julialang.org/u/benkj)\
**Replies:** 4\
**Last updated:** [November 2, 2025, 12:50pm UTC](https://discourse.julialang.org/t/neovim-lsp-formatter-again/132800 "2025-11-02T12:50:30Z")

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This is a common topic, but I find quite hard to find up to date information online. Indeed, the official wiki is very old. There are some information in this post and on lspconfig that can be adapted to nvim 0.11 and m…

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## [Writing a Common JuliaCon Minisymposium Proposal on Computational Humanities & Social Science?](https://discourse.julialang.org/t/writing-a-common-juliacon-minisymposium-proposal-on-computational-humanities-social-science/133604)

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**Author:** [@Alex\_Tantos](https://discourse.julialang.org/u/Alex_Tantos)\
**Replies:** 0\
**Last updated:** [November 2, 2025, 11:36am UTC](https://discourse.julialang.org/t/writing-a-common-juliacon-minisymposium-proposal-on-computational-humanities-social-science/133604 "2025-11-02T11:36:41Z")

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Hello everyone. I was thinking of proposing a minisymposium on Computational Humanities & Social Science for JuliaCon 2026 and I’m looking for co-hosts to collaborate either for this year or the next. The Call for Minis…

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## [JuliaC - Modifying flags passed to julia and cc compiler](https://discourse.julialang.org/t/juliac-modifying-flags-passed-to-julia-and-cc-compiler/133601)

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**Author:** [@xlxs4](https://discourse.julialang.org/u/xlxs4)\
**Replies:** 0\
**Last updated:** [November 2, 2025, 9:42am UTC](https://discourse.julialang.org/t/juliac-modifying-flags-passed-to-julia-and-cc-compiler/133601 "2025-11-02T09:42:24Z")

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To modify the flags passed to the julia and cc compiler invocations by JuliaC, I’m using it programmatically. To modify the arguments passed to julia I can use julia\_args. If I use the JuliaC binary (juliac) I can pass a…

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## [How to set python version in a package wrapped by PythonCall (Solved: operator error)](https://discourse.julialang.org/t/how-to-set-python-version-in-a-package-wrapped-by-pythoncall-solved-operator-error/133598)

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**Author:** [@KajWiik](https://discourse.julialang.org/u/KajWiik)\
**Replies:** 1\
**Last updated:** [November 2, 2025, 8:27am UTC](https://discourse.julialang.org/t/how-to-set-python-version-in-a-package-wrapped-by-pythoncall-solved-operator-error/133598 "2025-11-02T08:27:12Z")

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I am writing a wrapper package using PythonCall and I would like to set the python version to \<= 3.13. I tried to set the version in CondaPkg.toml: \[deps\] python = "\<=3.13" but it doesn’t seem to work (version is still…

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## [Lux/Enzyme error when Training my model?](https://discourse.julialang.org/t/lux-enzyme-error-when-training-my-model/133442)

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**Author:** [@rkube](https://discourse.julialang.org/u/rkube)\
**Replies:** 9\
**Last updated:** [November 2, 2025, 1:44am UTC](https://discourse.julialang.org/t/lux-enzyme-error-when-training-my-model/133442 "2025-11-02T01:44:19Z")

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Hi, I’m trying to get a simple language model to train using Lux/Enzyme and get a big scary error. Does anyone have insight into how to get to the bottom of this? Is there an error in the MWE? I tried Zygote and it run…

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## [MakieTypstEngine.jl: a proof of concept for rendering typst strings in makie](https://discourse.julialang.org/t/makietypstengine-jl-a-proof-of-concept-for-rendering-typst-strings-in-makie/133523)

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**Author:** [@SuperGrobi](https://discourse.julialang.org/u/SuperGrobi)\
**Replies:** 14\
**Last updated:** [November 1, 2025, 10:14pm UTC](https://discourse.julialang.org/t/makietypstengine-jl-a-proof-of-concept-for-rendering-typst-strings-in-makie/133523 "2025-11-01T22:14:14Z")

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During the hackathon at JuliaCon in Paris, @Alseidon and I started playing around with passing typst strings (from typstry.jl) through makie, to a custom wrapper around the typst compiler, and back to makie, essentially …

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## [Best way to install and use julia on Nix/NixoS](https://discourse.julialang.org/t/best-way-to-install-and-use-julia-on-nix-nixos/109948)

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**Author:** [@Sparsetacus](https://discourse.julialang.org/u/Sparsetacus)\
**Replies:** 18\
**Last updated:** [November 1, 2025, 9:42pm UTC](https://discourse.julialang.org/t/best-way-to-install-and-use-julia-on-nix-nixos/109948 "2025-11-01T21:42:32Z")

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Hi there, I am a julia user new to Nix environment. And I am wondering what is the best way to install julia and use it under this platform. I see 3 ways : using julia package from Nix pkgs; using julia-bin packag…

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## [Compositional Methods in GeometricIntegrators.jl](https://discourse.julialang.org/t/compositional-methods-in-geometricintegrators-jl/133595)

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**Author:** [@leespen1](https://discourse.julialang.org/u/leespen1)\
**Replies:** 0\
**Last updated:** [November 1, 2025, 6:23pm UTC](https://discourse.julialang.org/t/compositional-methods-in-geometricintegrators-jl/133595 "2025-11-01T18:23:05Z")

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How can I use a compositional method, based on the implicit midpoint rule, in GeometricIntegrators.jl? My idea of a compositional method is based on Chapter V.3 Symmetric Composition Methods of Hairer et al.'s Geometric…

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## [Experiences with small binary compilation? Python wrapper, interface with NumPy?](https://discourse.julialang.org/t/experiences-with-small-binary-compilation-python-wrapper-interface-with-numpy/133578)

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**Author:** [@croberts](https://discourse.julialang.org/u/croberts)\
**Replies:** 5\
**Last updated:** [November 1, 2025, 3:28pm UTC](https://discourse.julialang.org/t/experiences-with-small-binary-compilation-python-wrapper-interface-with-numpy/133578 "2025-11-01T15:28:12Z")

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This post is asking about the practical status of Julia small binary compilation, particularly for interfacing with Numpy Arrays in Python. Suppose: (1) There is a large model written in python, where data is passed ar…

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## [JuliaC with --trim=no](https://discourse.julialang.org/t/juliac-with-trim-no/133592)

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**Author:** [@jdm204](https://discourse.julialang.org/u/jdm204)\
**Replies:** 2\
**Last updated:** [November 1, 2025, 3:25pm UTC](https://discourse.julialang.org/t/juliac-with-trim-no/133592 "2025-11-01T15:25:01Z")

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Hi, Is JuliaC supposed to work compiling arbitrary code with --trim=no? I’m trying to compile an interactive Makie plot (wouldn’t expect it to work with --trim), so I set --trim=no. I don’t mind a (very) large binary i…

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## [Test deps with workspaces](https://discourse.julialang.org/t/test-deps-with-workspaces/133591)

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**Author:** [@gdalle](https://discourse.julialang.org/u/gdalle)\
**Replies:** 2\
**Last updated:** [November 1, 2025, 3:10pm UTC](https://discourse.julialang.org/t/test-deps-with-workspaces/133591 "2025-11-01T15:10:29Z")

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I have a few questions on the new workflow for test dependencies, which should be enabled in 1.12 thanks to the \[workspace\] section: Does the parent package have to be listed in test/Project.toml now? It didn’t have to…

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## [Side effects (or intended effects) in TidierData?](https://discourse.julialang.org/t/side-effects-or-intended-effects-in-tidierdata/133438)

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**Author:** [@rocco\_sprmnt21](https://discourse.julialang.org/u/rocco_sprmnt21)\
**Replies:** 11\
**Last updated:** [October 31, 2025, 10:53pm UTC](https://discourse.julialang.org/t/side-effects-or-intended-effects-in-tidierdata/133438 "2025-10-31T22:53:35Z")

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julia\> df4 = DataFrame(x = \["a", "b", "a", "b", "C", "a"\], y = 1:6, yz = 13:18, a = \[join(rand('a':'z',4)) for \_ in 1:6\], ab = 12:-1:7) 6×5 DataFrame Row │ x y yz a ab │ String Int64 Int6…

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## [Asking LLM a very difficult question](https://discourse.julialang.org/t/asking-llm-a-very-difficult-question/133571)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 7\
**Last updated:** [December 10, 2025, 2:00pm UTC](https://discourse.julialang.org/t/asking-llm-a-very-difficult-question/133571 "2025-12-10T14:00:21Z")

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I tried asking to several LLM (ChatGPT, Gemini..) the question : “what’s odd with this parking slot”.. None told me what looks obviously very odd in the photo, even after several hints/attempts:

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## [Solving Projection onto Linear Equality for Multiple Input Vectors](https://discourse.julialang.org/t/solving-projection-onto-linear-equality-for-multiple-input-vectors/133428)

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**Author:** [@RoyiAvital](https://discourse.julialang.org/u/RoyiAvital)\
**Replies:** 11\
**Last updated:** [October 31, 2025, 8:52pm UTC](https://discourse.julialang.org/t/solving-projection-onto-linear-equality-for-multiple-input-vectors/133428 "2025-10-31T20:52:18Z")

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I am after solving the projection onto a Linear Equation problem: \\arg \\min\_{\\boldsymbol{x}} \\frac{1}{2} {\\left\\| \\boldsymbol{x} - \\boldsymbol{y} \\right\\|}\_{2}^{2} \\; \\text{ subject to } \\boldsymbol{A} \\boldsymbol{x} =…

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## [Simple Python Program with Juliacall Segfaults](https://discourse.julialang.org/t/simple-python-program-with-juliacall-segfaults/133517)

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**Author:** [@greatpet](https://discourse.julialang.org/u/greatpet)\
**Replies:** 4\
**Last updated:** [October 31, 2025, 8:28pm UTC](https://discourse.julialang.org/t/simple-python-program-with-juliacall-segfaults/133517 "2025-10-31T20:28:24Z")

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This simple Python program calling a Julia function crashes sporadically with segfault. # juliacall\_compute\_square.py from juliacall import Main as jl print(f"julia version : {jl.VERSION}") numstring = input("Enter a nu…

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## [Dynamic include file selection with world age constraints in Julia 1.12 - alternatives to conditional include?](https://discourse.julialang.org/t/dynamic-include-file-selection-with-world-age-constraints-in-julia-1-12-alternatives-to-conditional-include/133581)

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**Author:** [@sfuerst](https://discourse.julialang.org/u/sfuerst)\
**Replies:** 3\
**Last updated:** [October 31, 2025, 6:36pm UTC](https://discourse.julialang.org/t/dynamic-include-file-selection-with-world-age-constraints-in-julia-1-12-alternatives-to-conditional-include/133581 "2025-10-31T18:36:03Z")

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Hi everyone, I’m facing a challenge with Julia 1.12’s stricter world age semantics. I have a pattern where I conditionally include different implementation variants based on configuration, but this no longer works in Ju…

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## [\[ANN\] SnakeBar.jl - A progress bar that fills your terminal with space-filling curves](https://discourse.julialang.org/t/ann-snakebar-jl-a-progress-bar-that-fills-your-terminal-with-space-filling-curves/133580)

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**Author:** [@majoburo](https://discourse.julialang.org/u/majoburo)\
**Replies:** 2\
**Last updated:** [October 31, 2025, 4:58pm UTC](https://discourse.julialang.org/t/ann-snakebar-jl-a-progress-bar-that-fills-your-terminal-with-space-filling-curves/133580 "2025-10-31T16:58:25Z")

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Hey everyone, I just released my first Julia package, SnakeBar.jl – a progress bar that draws a random space-filling curve per process in your terminal! Any comments are appreciated! Happy Halloween! Community reactio…

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## [Clearing up common beginner misconceptions](https://discourse.julialang.org/t/clearing-up-common-beginner-misconceptions/133404)

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**Author:** [@Benny](https://discourse.julialang.org/u/Benny)\
**Replies:** 16\
**Last updated:** [October 31, 2025, 2:23pm UTC](https://discourse.julialang.org/t/clearing-up-common-beginner-misconceptions/133404 "2025-10-31T14:23:31Z")

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To preface, this is just one person’s attempt to help people save some time and engage with a new language with more reasonable expectations, not a standalone or authoritative source of information. I expect learning abo…

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## [\[ANN\] ManifoldsBase.jl 1.0](https://discourse.julialang.org/t/ann-manifoldsbase-jl-1-0/125752)

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**Author:** [@kellertuer](https://discourse.julialang.org/u/kellertuer)\
**Replies:** 17\
**Last updated:** [October 31, 2025, 12:57pm UTC](https://discourse.julialang.org/t/ann-manifoldsbase-jl-1-0/125752 "2025-10-31T12:57:55Z")

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ManifoldsBase.jl is moving to a stable version 1.0 A few years back, we in JuliaManifolds decided, that it would be nice to have a general interface package for the manifolds defined in Manifolds.jl, since that allows …

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