Issues

• fetchTree: fetching the same tree from different local paths only mounts one and changes to one are visible in others

  bug
  NixOS/nix#16553 · Filter by author yorickvP opened on Oct 2, 2026

• derivation: output names with whitespace should be rejected

  error-messages
  NixOS/nix#16552 · Filter by author yorickvP opened on Oct 2, 2026
  3

• Allow nix flake check to replay logs for already realised checks

  feature
  NixOS/nix#16551 · Filter by author malik-n opened on Oct 2, 2026

• flakes: builtins.toXML and nix run use checkout path instead of store path

  bug
  NixOS/nix#16550 · Filter by author yorickvP opened on Oct 2, 2026

• Fetchers: local git trees skip a directory when there's a file with the same name plus a non-ASCII character (src/ next to srcü)

  bug
  NixOS/nix#16549 · Filter by author yorickvP opened on Oct 2, 2026

• tests/functional/gc-closure.sh can fail with SIGPIPE (exit 141) at printf | head -n1

  bug
  NixOS/nix#16546 · Filter by author fzakaria opened on Oct 2, 2026

• Ccache stdenv is slow, and new contributor documentatioon

  NixOS/nix#16540 · Filter by author MaxistheSpy opened on Sep 30, 2026

• Please generate scripts for mounting the nix-store volume and launching the nix-daemon

  feature
  NixOS/nix#16539 · Filter by author novasharper opened on Sep 30, 2026

• :doc command unfolds partial applications even when definition has documentation

  bug
  NixOS/nix#16531 · Filter by author leana8959 opened on Sep 27, 2026
  2

• int overflow in builtins.compareVersions

  bug
  NixOS/nix#16526 · Filter by author yorickvP opened on Sep 26, 2026
  7

• derivation { system = "\\"; … } creates unreadable .drv file

  bug
  NixOS/nix#16525 · Filter by author yorickvP opened on Sep 26, 2026

• Define the behavior of findGenerations with concurrent profile modifications

  NixOS/nix#16524 · Filter by author xokdvium opened on Sep 26, 2026

• nix-util-tests-run tests failing

  bug
  NixOS/nix#16520 · Filter by author abkein opened on Sep 26, 2026
  3

• builtins.fetchTree never substitutes a pinned tree from a binary cache, but an equivalent locked flake input does

  bug
  NixOS/nix#16509 · Filter by author fzakaria opened on Sep 23, 2026
  9

• ffmpeg-kit-next not able to install with Nix

  installer
  NixOS/nix#16505 · Filter by author cdebaixo opened on Sep 23, 2026
  2

• Remote builder + missing trusted public key = confusing error

  feature
  NixOS/nix#16500 · Filter by author yshui opened on Sep 21, 2026
  2

• RegisterCommand plugins still resolve too late for top-level nix <plugin-cmd> (2.36)

  NixOS/nix#16498 · Filter by author mikenrafter opened on Sep 21, 2026
  8

• outputChecks: symbolic sibling-output references fail to resolve when the sibling was already valid

  NixOS/nix#16485 · Filter by author hartmanfrost opened on Sep 18, 2026

• Preview and organize changes before downloading

  feature
  NixOS/nix#16484 · Filter by author kelian-4 opened on Sep 18, 2026
  7

• [local-store] SQLite error when executing operations on read-only local store

  bug
  NixOS/nix#16475 · Filter by author RyanTorok opened on Sep 16, 2026
  1

• Hook or Cuckoo Filter for Nix Store via Nix Daemon Protocol

  feature
  NixOS/nix#16468 · Filter by author DerDennisOP opened on Sep 14, 2026
  1

• builtins.fetchTarball fails with a large archive when url starts with file://

  bug
  NixOS/nix#16463 · Filter by author poacubed opened on Sep 12, 2026
  2

• nix profile add conflict message has new/old packages backwards

  bugerror-messages
  NixOS/nix#16448 · Filter by author Jaculabilis opened on Sep 10, 2026

• macOS installer breaks an existing nix-installer volume, spins forever, and mishandles a root-only synthetic.conf

  NixOS/nix#16447 · Filter by author EclipseIsDead opened on Sep 10, 2026

• Remote building over ssh can cause hangs on lots of output, ssh-ng:// seems fine

  bug
  NixOS/nix#16437 · Filter by author nh2 opened on Sep 7, 2026
  1