v2.34.2

Fixes

• Faster cache-status checks. When --check-cache-status is enabled,
  nix-eval-jobs now skips the binary-cache query for a derivation as soon as it
  finds that the outputs can be substituted, instead of always querying every
  output. This reduces network round-trips and speeds up evaluation against
  remote caches (@Mic92, #414).

• Daemon-only settings no longer warn. Config keys that only apply to the
  Nix daemon (such as allowed-users and trusted-users) could still trigger
  "unknown setting" warnings because the code registering them was dropped by
  the linker. The settings are now reliably registered before nix.conf is
  read, so the warnings stay silent (@booxter, #416).

• Safer /nix/store mounts when run as root. Running nix-eval-jobs as root
  could cause /nix/store to be remounted without its ro,nosuid,nodev flags
  on the host. nix-eval-jobs now unshares its mount namespace first, matching
  Nix's own behavior, so the host store mount is left untouched
  (@tomberek, #417, refs NixOS/nix#13242, NixOS/nixpkgs#177946).

Internal

• Constituent/aggregate jobs now reuse Nix's fillInOutputPaths instead of
  computing output hashes by hand, keeping output-path derivation in sync with
  Nix (@amaanq, #408).

New contributors

• @amaanq (#408)
• @booxter (#416)

Full changelog: v2.34.1...v2.34.2