Hi, i have some trouble with cargo add...

[BakinSergey]

$ uname -a
Linux ****** 6.17.0-35-generic #35~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 26 19:30:42 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

$ rustc -V
rustc 1.97.0 (2d8144b78 2026-07-07)

$ cargo add csgrs
Updating crates.io index
Adding csgrs v0.20.1 to dependencies
Features:
+ amf-io
+ chull
+ chull-io
+ contour_tracing
+ delaunay
+ dxf
+ dxf-io
+ f64
+ fast-surface-nets
+ hershey
+ hershey-text
+ image
+ image-io
+ metaballs
+ nom
+ obj-io
+ offset
+ parry3d-f64
+ ply-io
+ rapier3d-f64
+ sdf
+ stl-io
+ stl_io
+ svg
+ svg-io
+ truetype-text
+ ttf-parser
+ ttf-utils
9 deactivated features
Updating crates.io index
error: failed to select a version for the requirement core2 = "^0.4"
version 0.4.0 is yanked
location searched: crates.io index
required by package csgrs v0.20.1
... which satisfies dependency csgrs = "^0.20.1" of package `csg_edu v0.1.0 (/home/...

any idea?

i try earlier version,
15.0 was last succesfully installed, all of later fail with this error

[timschmidt]

For the last year or so I've been working on more robust numerics to underpin csgrs which you can experiment with here: https://github.com/timschmidt/csgrs/tree/hyperreal

After much effort we are finally nearing a release with the new math.

It seems a few of the dependencies of the old releases have bitrot in the meantime. Apologies for that.

If your application can handle a slight performance penalty (optimization is ongoing), please investigate the hyperreal branch. It has much improved meshing, 2D curves, booleans, and offsets, and operates at infinite precision, only approximating at IO boundaries. I will push to get a release with the new numerics out soon. Your testing and feedback would be welcome!

[BakinSergey]

Thx, i will wait for release. I have no app based on csgrs(yet).
I pulled repo for introducing myself with csgrs, this was attemp to build first sample from README.

[timschmidt]

I've merged the hyperreal branch to main. It has progressed enough. I am still working on memory and performance optimizations for hypermesh and hypercurve, it's direct dependencies, so expect continued improvement. It is already competitive with CGAL EPECK and OpenCASCADE across a broad range of inputs. I will release when optimization passes are through.

[Blatko1]

Using the main branch as the crate source gives an error: "no matching package named hypercurve found". Also pulling the repo and testing the examples gives the same error.