Update flake.lock

[hrp2-14]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/4524271976b625a4a605beefd893f270620fd751?narHash=sha256-%2BuWLQZccFHwqpGqr2Yt5VsW/PbeJVTn9Dk6SHWhNRPw%3D' (2025-09-01)
  → 'github:hercules-ci/flake-parts/52a2caecc898d0b46b2b905f058ccc5081f842da?narHash=sha256-8oNVE8TrD19ulHinjaqONf9QWCKK%2Bw4url56cdStMpM%3D' (2025-11-12)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:nix-community/nixpkgs.lib/a73b9c743612e4244d865a2fdee11865283c04e6?narHash=sha256-x2rJ%2BOvzq0sCMpgfgGaaqgBSwY%2BLST%2BWbZ6TytnT9Rk%3D' (2025-08-10)
  → 'github:nix-community/nixpkgs.lib/719359f4562934ae99f5443f20aa06c2ffff91fc?narHash=sha256-b0yj6kfvO8ApcSE%2BQmA6mUfu8IYG6/uU28OFn4PaC8M%3D' (2025-10-29)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/ab0f3607a6c7486ea22229b92ed2d355f1482ee0?narHash=sha256-zwE/e7CuPJUWKdvvTCB7iunV4E/%2BG0lKfv4kk/5Izdg%3D' (2025-09-10)
  → 'github:NixOS/nixpkgs/9da7f1cf7f8a6e2a7cb3001b048546c92a8258b4?narHash=sha256-SlybxLZ1/e4T2lb1czEtWVzDCVSTvk9WLwGhmxFmBxI%3D' (2025-11-11)

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, close and re-open this pull request.

[cmastalli]

@nim65s -- it looks like something needs to be fixed in Nix.

[nim65s]

I think the proper fix would be to release v3.1.1 with #1440

I'll push a faster workaround here for now though

[cmastalli]

I think the proper fix would be to release v3.1.1 with #1440

We could proceed with a new release.

[nim65s]

py-crocoddyl> ImportError: dlopen(/nix/var/nix/builds/nix-7763-3152016158/source/build/bindings/python/crocoddyl/libcrocoddyl_pywrap_float64.cpython-313-darwin.so, 0x0002): symbol not found in flat namespace '__ZNK9crocoddyl16StateAbstractTplIdE14safe_integrateERKN5Eigen3RefIKNS2_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS2_11InnerStrideILi1EEEEESB_NS3_IS5_Li0ES8_EE'

Hum, that's new, and unexpected :/

[cmastalli]

py-crocoddyl> ImportError: dlopen(/nix/var/nix/builds/nix-7763-3152016158/source/build/bindings/python/crocoddyl/libcrocoddyl_pywrap_float64.cpython-313-darwin.so, 0x0002): symbol not found in flat namespace '__ZNK9crocoddyl16StateAbstractTplIdE14safe_integrateERKN5Eigen3RefIKNS2_6MatrixIdLin1ELi1ELi0ELin1ELi1EEELi0ENS2_11InnerStrideILi1EEEEESB_NS3_IS5_Li0ES8_EE'

Hum, that's new, and unexpected :/

Can you advise me on how to reproduce it? @Sergim96 -- could you have a look at it?

[cmastalli]

Hey @nim65s -- I don't see any issue from the code side. Do you have any idea what is happening? Should we merge this PR?

[nim65s]

We should not merge before we can understand I think. I'll try to work on this soon

[cmastalli]

We should not merge before we can understand I think. I'll try to work on this soon

It looks like an ABI mismatch, i.e., mixing different Eigen index sizes or mixing Nix and non‑Nix builds.