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nix copy does not copy when file disappeared on destination

bug

Status: Open.

#16273 In NixOS/nix;

· tomalexander opened on Aug 8, 2026

local-overlay store: GC frees nothing under --max-freed, on an uninitialised bytesFreed

Status: Open.

#16269 In NixOS/nix;

· gubasso opened on Aug 6, 2026

abort: bit out of range 0 - FD_SETSIZE on fd_set

bug

Status: Open.

#16258 In NixOS/nix;

· Sigmanificient opened on Aug 3, 2026

String interpolation shows up as "path segment" in trace

bug

error-messagesConfusing messages and better diagnosticsConfusing messages and better diagnostics

languageThe Nix expression language; parser, interpreter, primops, evaluation, etcThe Nix expression language; parser, interpreter, primops, evaluation, etc

Status: Open.

#16253 In NixOS/nix;

· roberth opened on Aug 2, 2026

Hardening derivation handling

Status: Open.

#16237 In NixOS/nix;

· xokdvium opened on Jul 29, 2026

DerivationView: avoid copying when varying derivation inputs

Status: Open.

#16236 In NixOS/nix;

· Ericson2314 opened on Jul 29, 2026

Replace requires std::is_same_v<Inputs, ...> member constraints on DerivationT with free functions using ADL

Status: Open.

#16235 In NixOS/nix;

· Ericson2314 opened on Jul 29, 2026

Flake Git inputs specifying only a rev always add/lock to the default ref

bug

Status: Open.

#16233 In NixOS/nix;

· gabschne opened on Jul 29, 2026

No fast, painfree way to add local file to store and get hash.

featureFeature request or proposalFeature request or proposal

Status: Open.

#16232 In NixOS/nix;

· YellowOnion opened on Jul 29, 2026

Download progress bar for nix-shell

featureFeature request or proposalFeature request or proposal

Status: Open.

#16231 In NixOS/nix;

· isolatedwebappdev opened on Jul 29, 2026

nix registry pin cannot handle a flake type change

bug

Status: Open.

#16221 In NixOS/nix;

· fgaz opened on Jul 27, 2026

path:/abs cuts out parent, while path:./rel does not

bug

flakes

Status: Open.

#16214 In NixOS/nix;

· roberth opened on Jul 25, 2026

·  

flakes stabilisation