Release 3.19.0 (2026-04-28)

• Based on upstream Nix 2.34.6.

What's Changed

Update to upstream Nix 2.34

Determinate Nix is now based on upstream Nix 2.34, which includes a large number of bug fixes and improvements.

Provenance is preserved when copying paths to the daemon

Previously, nix copy would not forward provenance information to the recipient.

This has been fixed, such that building a derivation on machine A and nix copying it to machine B will show the same provenance.

PR: DeterminateSystems/nix-src#399

Full Changelog: v3.18.1...v3.19.0