This needs a few things:

 Problem 1: nothing provides requested (crate(cool_asserts/default) >= 2.0.3 with crate(cool_asserts/default) < 3.0.0~)
 Problem 2: nothing provides requested (crate(matrixcompare-core/default) >= 0.1.0 with crate(matrixcompare-core/default) < 0.2.0~)
 Problem 3: nothing provides requested (crate(matrixcompare/default) >= 0.3.0 with crate(matrixcompare/default) < 0.4.0~)
 Problem 4: nothing provides requested (crate(matrixmultiply/default) >= 0.3.0 with crate(matrixmultiply/default) < 0.4.0~)
 Problem 5: nothing provides requested (crate(nalgebra-macros/default) >= 0.2.2 with crate(nalgebra-macros/default) < 0.3.0~)
 Problem 6: nothing provides requested (crate(simba) >= 0.9.0 with crate(simba) < 0.10.0~)
 Problem 7: nothing provides requested (crate(simba/std) >= 0.9.0 with crate(simba/std) < 0.10.0~)

I am shipping a rust-postcard update that includes an integration feature for nalgebra, which is available everywhere but EPEL10. Rather than dropping the integration feature, since nalgebra is needed in EPEL10 anyway, I am planning to take care of branching this package and its substantial dependency tree, which includes the following chains:

indent_write : cool_asserts : nalgebra
nalgebra-macros : nalgebra
               num : matrixcompare-mock
matrixcompare-core : matrixcompare-mock : matrixcompare : nalgebra
rawpointer : matrixmultiply : nalgebra
      az : fixed : simba
          cordic : simba
safe_arch : wide : simba : nalgebra

nalgebra : postcard
nalgebra : triforce-lv2

This needs https://src.fedoraproject.org/rpms/rust-matrixcompare-mock/pull-request/2 to avoid branching a small pile of compat packages, and I think I will need to do a little work on rust-matrixmultiply before branching, too.

https://src.fedoraproject.org/rpms/rust-matrixmultiply/pull-request/2

We also have:

thread-tree : matrixmultiply

which I missed before.

and now that I have actually built rust-nalgebra in mock for EPEL10, I see that we need

mint : nalgebra

for installability

FEDORA-EPEL-2025-6a0149f4e0 (rust-az-1.2.1-7.el10_1, rust-cool_asserts-2.0.3-2.el10_1, and 18 more) has been submitted as an update to Fedora EPEL 10.1.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2025-6a0149f4e0

FEDORA-EPEL-2025-6a0149f4e0 has been pushed to the Fedora EPEL 10.1 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2025-6a0149f4e0

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

FEDORA-EPEL-2025-6a0149f4e0 (rust-az-1.2.1-7.el10_1, rust-cool_asserts-2.0.3-2.el10_1, and 18 more) has been pushed to the Fedora EPEL 10.1 stable repository.
If problem still persists, please make note of it in this bug report.