nix flake check fails after updating rust-overlay

[KiaraGrouwstra]

Describe the bug
nix flake check fails after updating rust-overlay.

To Reproduce

1. update rust-overlay to a commit from oxalica/rust-overlay@419e7fa
2. run nix flake check
3. find error:

++ command cargo check --release --all-targets
error: failed to load source for dependency nickel-lang-core

Caused by:
Unable to update https://github.com/tweag/nickel#0f02aa14

Caused by:
failed to update replaced source https://github.com/tweag/nickel#0f02aa14

Caused by:
failed to parse manifest at /nix/store/xhh6jnnyly8bbwdfx2gcvq7csb3xp9pr-vendor-cargo-deps/6801daa5f5bc5590ce15a017efc004f351bc501be9288af5e41c713ac948c061/nickel-lang-core-0.1.0/Cargo.toml

Caused by:
dependency (ansi_term) specified without providing a local path, Git repository, version, or workspace dependency to use

Expected behavior
no error

Environment

• NixOS 24.11
• master

Additional context

[yannham]

Fixed by #77 as well (that has updated the flake.lock entirely).