Release notes for 2.34.0 by xokdvium · Pull Request #15363 · NixOS/nix

xokdvium · 2026-02-27T20:59:37Z

Motivation

Context

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artemist

Missing the libexec/nix-nswrapper command

Co-authored-by: Artemis Tosini <artemis.tosini@obsidian.systems>

roberth · 2026-03-02T17:27:53Z

From running /maintainers/release-notes-todo 2.33.0, here's a potential to do list.
Potential because

this is merged
release notes should be added in the PR ideally

But that said, it's perhaps worth scanning through to see if there's anything we want to still add.

Also this comment creates useful backlinks :)

libutil: More efficient readLittleEndian #15375 (xokdvium)
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Use #include <...> for Windows system headers #15374 (edolstra)
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libutil: Template SyncBase over condition_variable implementation #15371 (xokdvium)
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LocalStore: stop creating outdated profiles symlink #15370 (puffnfresh)
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manual: Skip changelog-d on i686 #15361 (xokdvium)
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Have fun: std::function without null #15360 (roberth)
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Add SysError/WinError constructors that take a HintFmt-producing function #15359 (Ericson2314)
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Remove path setting #15357 (amaanq)
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Fix NarInfoDiskCache::queryCacheRaw on 32 bit platforms #15356 (xokdvium)
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types: remove Path* typedefs #15354 (amaanq)
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Fix package-related CLI messages #15349 (roberth)
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Create two wrappers for unlink #15347 (Ericson2314)
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Return AutoCloseFD in open-like functions #15346 (amaanq)
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Create lint for absolute path literals #15345 (Ericson2314)
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Revert "libstore: replace unlink() with std::filesystem::remove()" #15344 (Ericson2314)
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Fix the nix-community/patsh/0.2.1 flake regression test (again) #15341 (edolstra)
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libstore: convert more Path to std::filesystem::path #15339 (amaanq)
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filetransfer: Use libcurl for Content-Encoding/Transfer-Encoding transparent decompression #15336 (xokdvium)
Content-Encoding decompression is now handled by libcurl #14324 #15336
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Don't throw Interrupted from JSONLogger::write #15335 (dramforever)
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Introduce CanonPath::fromFilename #15333 (xokdvium)
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ci: add Windows nix-util-tests job #15332 (amaanq)
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libutil: Get rid of double-quoting and .string() calls in file-system.cc #15330 (xokdvium)
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file-system: drop redundant quotes around PathFmt and assert relative paths #15329 (amaanq)
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DerivationBuilderImpl: Add more hardening for writeBuilderFile #15328 (xokdvium)
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New diagnostics infra #15326 (Ericson2314)
New diagnostics infrastructure, with lint-url-literals, lint-short-path-literals, and lint-absolute-path-literals settings #8738 #10048 #10281 #15326
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tests/functional/unprivileged-daemon: Use nixpkgs unprivileged support #15325 (artemist)
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libutil: treat EIO as EOF in readLine #15323 (amaanq)
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tests: add writeFull interrupt-handling regression test #15321 (amaanq)
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libutil: Fix writeFull to respect allowInterrupts #15319 (xokdvium)
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registry: fix symlinked flake registry files broken by convert-end-exes #15314 (amaanq)
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libutil: replace string-based Path with std::filesystem::path across core libraries #15313 (amaanq)
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cli: continue converting Path to std::filesystem::path in CLI commands #15312 (amaanq)
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libutil: return std::filesystem::path from XDG directory helpers #15311 (amaanq)
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PathLocks allow to fail on Wine #15310 (amaanq)
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Fix initialization of ioport in Worker on Windows #15308 (amaanq)
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windows: add a separate local_shorthand_path test #15307 (puffnfresh)
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Centralize I/O error handling and make read/write functions portable #15305 (amaanq)
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Misc file system fixes, especially for windows #15301 (amaanq)
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Add special error message for empty derivation file #15298 (dramforever)
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Reapply "Use the hash modulo in the derivation outputs" #15296 (Mic92)
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libexpr: Use temporary value in ExprOpUpdate::eval #15295 (xokdvium)
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libutil: Drop superflous .string() in pathExists and pathAccessible #15294 (xokdvium)
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fix(EvalState): Use make_shared for enable_shared_from_this compatibi… #15291 (roberth)
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Add setting narinfo-cache-meta-ttl #15287 (edolstra)
New setting narinfo-cache-meta-ttl #15287
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Introduce a "failed" value type (v2) #15286 (xokdvium)
C API: Errors returned from your primops are not treated as recoverable by default #13930 #15286
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Filesystem error improvements #15283 (Ericson2314)
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libstore: Fix pct-encoding issues in store references #15280 (xokdvium)
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Windows: don't use bar log format #15278 (puffnfresh)
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LocalStore: stop creating outdated profiles symlink #15277 (puffnfresh)
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libstore: refactor tryToBuild with coroutine lambdas and RAII #15274 (amaanq)
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libutil: More robust check for NIX_UBSAN_ENABLED #15273 (xokdvium)
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Eval warnings #15272 (roberth)
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libexpr: Optimise Value::type(), ValueStorage::getInternalType() #15271 (xokdvium)
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libexpr: Make sure EvalState::lookupVar is inlined #15270 (xokdvium)
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tests: quote PATH in external-builders test heredoc #15267 (amaanq)
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libstore: structured diagnostics for local build rejection #15266 (amaanq)
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libfetchers/git-utils: Add GitError class for deduplicating error… #15265 (xokdvium)
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build(deps): bump korthout/backport-action from 4.0.1 to 4.1.0 #15257 (app/dependabot)
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build(deps): bump cachix/install-nix-action from 31.9.0 to 31.9.1 #15256 (app/dependabot)
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repl: catch all errors during tab completion #15255 (amaanq)
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fix(tests): use glob instead of regex in nix-shell test #15254 (roberth)
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libflake: fix assertion crash when malformed URL falls through to path scheme #15253 (amaanq)
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upload-release: disable containerd image store to preserve gzip layer compression #15252 (amaanq)
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Split file-system-at.{cc,hh} from file-descriptor.{cc,hh} #15251 (Ericson2314)
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Remove suppport for not having lchown #15250 (Ericson2314)
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fix(packaging): restrict nix-nswrapper to Linux platforms #15248 (roberth)
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Better ref casting DX #15247 (roberth)
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libstore: guard against empty archive in unpack paths #15242 (amaanq)
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libutil: fix isInDir rejecting paths starting with dot #15241 (amaanq)
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libstore-tests: Fix mTLS test for redirect, correctly propagate tries #15240 (xokdvium)
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meson: Only enable -Wno-interference-size with GCC #15239 (xokdvium)
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Add missing temproots for cached sources and existing derivations #15237 (xokdvium)
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libutil-tests: Fix crash on Windows #15235 (artemist)
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libstore: remove Settings::nixStore in favor of StoreConfigBase::getDefaultNixStoreDir #15233 (amaanq)
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libstore: inline willBuildLocally and canBuildLocally into call sites #15232 (amaanq)
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libstore: inline getMachines into call sites #15231 (amaanq)
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flake: Use Wine 11 for running mingw tests #15230 (artemist)
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Emit basic dry run message for garbage collection #15229 (lisanna-dettwyler)
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libstore: extract ProfileDirsOptions from Settings #15228 (amaanq)
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libstore: extract NarInfoDiskCacheSettings from Settings #15227 (amaanq)
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Get rid of the settings-dependent writeDerivation wrapper #15219 (Ericson2314)
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libstore: make substitution use the per-store getReadOnly method #15218 (amaanq)
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libstore: pass stateDir to acquireUserLock instead of using global #15217 (amaanq)
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fix: #15208 #15216 (lovesegfault)
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Unhardcode alignas cache line size #15213 (xokdvium)
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libstore: extract WorkerSettings from Settings #15211 (amaanq)
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libstore: add HttpBinaryCacheStoreConfig constructor that takes a ParsedURL #15209 (amaanq)
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libstore: make FileTransfer injectable into HttpBinaryCacheStore #15206 (amaanq)
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Increase the open file soft limit to the hard limit #15205 (edolstra)
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Deduplicate nix repl and nix log #15203 (Ericson2314)
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libstore: migrate caFile, netrcFile, and downloadSpeed to FileTransferSettings #15202 (amaanq)
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beta nix-installer: add release-note #15201 (mkenigs)
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store-config: remove unnecessary const from Setting<> fields #15200 (amaanq)
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nix-copy-closure: create LegacySSHStoreConfig directly #15197 (amaanq)
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globals: use StoreReference types in CLI argument handlers #15195 (amaanq)
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Make nix daemon a StoreConfigCommand #15194 (amaanq)
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DerivationBuilder: Preserve death signal across setuid,setgid #15193 (xokdvium)
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globals: change store settings to use StoreReference types directly #15192 (amaanq)
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Move nix::handleExceptions to libutil #15188 (artemist)
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Factor out serveUnixSocket #15187 (amaanq)
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Support build users on unprivileged users with subuid/subgid #15183 (artemist)
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meson: Add -Werror=return-type and -Werror=non-virtual-dtor flags #15180 (xokdvium)
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check isFlake in nixpkgsFlakeRef #15175 (KiaraGrouwstra)
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libutil: Assorted collection of fixes, address UBSan failure in AutoDelete #15172 (xokdvium)
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Add Derivation::shouldResolve() method, use in nix-shell #15170 (amaanq)
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Add -Werror=c99-designator and fix brace elision warnings #15168 (roberth)
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libcmd/repl: Fix issues with :ll before anything is loaded, get rid o… #15167 (xokdvium)
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NarIndexer: Implement skip #15163 (xokdvium)
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worker-protocol: embed features in Version and add Number inner type #15161 (amaanq)
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builtins.flakeRefToString: Evaluate attributes #15160 (edolstra)
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BinaryCacheStore::queryPathInfoUncached(): Ensure noexcept #15157 (edolstra)
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libstore: move logic of findRuntimeRoots to new file #15156 (artemist)
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worker-protocol: replace version bit-shifting with structs #15155 (amaanq)
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libutil: Add overflow check to alignUp #15149 (xokdvium)
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tests: fix URL literals in functional tests #15148 (Mic92)
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libutil: Fix mingw build #15147 (xokdvium)
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libcmd: add new StoreConfigCommand class #15145 (artemist)
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libutil: add terminator option to readLine #15144 (artemist)
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Support garbage collection in external daemon #15143 (artemist)
New command nix store roots-daemon for serving GC roots #15143
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libutil: Add openNewFileForWrite helper function, wrap callsites #15141 (xokdvium)
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input-cache.hh: Add missing #pragma once #15137 (edolstra)
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build(deps): bump docker/login-action from 3.6.0 to 3.7.0 #15135 (app/dependabot)
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Fix: QueryPathInfo throws on invalid path error in daemon #15134 (pkpbynum)
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libstore/s3-binary-cache-store: Add Content-MD5 header as message int… #15127 (xokdvium)
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Support gc-runtime functional tests in VMs #15123 (artemist)
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libstore: fix runtime gc on non-standard store paths #15122 (artemist)
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libstore: introduce CanonicalizePathMetadataOptions for canonicalisePathMetaData #15119 (amaanq)
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libstore: introduce ExitStatusFlags for exit status computation #15118 (amaanq)
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libstore: add PersonalityArgs struct for setPersonality #15117 (amaanq)
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Refactor fstat into a wrapper in libutil #15111 (artemist)
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libutil: add useful functions to Pid #15110 (artemist)
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nix-store: fsync generated key files #15107 (bouk)
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libstore: decide how to build in one spot #15104 (amaanq)
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libstore: split out local build and store related settings under LocalSettings #15101 (amaanq)
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libstore: move command-specific settings to their own files #15099 (amaanq)
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tests/functional: fix nix-shell fixed-output derivation test #15098 (amaanq)
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Some small fixes #15095 (Ericson2314)
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tests/functional: isolate git tests from host signing config #15094 (amaanq)
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libexpr/parser: Use readable tokens in error messages instead of inte… #15092 (xokdvium)
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globals: refactor diffHook settings #15091 (amaanq)
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std::filesystem::path in some Settings fields #15089 (Ericson2314)
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libutil: unix filesystem add more PathFmt #15086 (JustAGuyTryingHisBest)
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Fix build-hook setting being clobbered #15083 (lisanna-dettwyler)
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repl: support inherit statements and multiple bindings #15082 (roberth)
nix repl now supports inherit and multiple bindings #15082
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Clean up AutoRemoveJail, AutoDelete, and AutoUnmount #15079 (Ericson2314)
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Cleanup stat usage #15077 (Ericson2314)
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Prepare for nixpkgs 25.11, enable S3 support in static builds #15076 (xokdvium)
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Share the exception-using chmod wrapper with more code #15075 (Ericson2314)
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Fix destruction of DerivationBuilder implementations #15072 (xokdvium)
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tests: fix sandbox-paths in cancelled-builds test #15071 (roberth)
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build-result: Make Failure an alias for BuildError #15070 (amaanq)
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ci: Drop magic-nix-cache #15062 (xokdvium)
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build-result: throw better #15061 (amaanq)
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Support readLinkAt and openFileEnsureBeneathNoSymlinks on Windows too #15060 (Ericson2314)
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feat(libstore/aws-creds): route AWS CRT logs through Nix logger #15059 (lovesegfault)
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libstore: split out GCSettings #15058 (amaanq)
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linux-derivation-builder: Explicitly specify nstype for setns calls i… #15056 (xokdvium)
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Add new VM test with unprivileged daemon user #15054 (artemist)
New setting ignore-gc-delete-failure for local stores #15054
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libstore: split out LogFileSettings #15051 (amaanq)
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libstore: add SQLite::Settings struct for explicit configuration #15050 (amaanq)
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fix(libstore/filetransfer): skip Accept-Encoding header for S3 SigV4 requests #15048 (lovesegfault)
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fix(libstore/filetransfer): restart source before upload retries #15047 (lovesegfault)
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nix config check: improve error when no nix-env in PATH #15046 (juhp)
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Remove nixDataDir, NIX_DATA_DIR #15045 (Ericson2314)
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Remove Settings::nixPrefix #15044 (Ericson2314)
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Split out AutoAllocateUidSettings #15043 (Ericson2314)
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Factor out NarCache from RemoteFSAccessor #15040 (Ericson2314)
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libutil: Add unix::readLinkAt function #15039 (xokdvium)
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More IO portability cleanups #15038 (Ericson2314)
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realisePath(): Move into EvalState #15037 (edolstra)
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ci: Bump magic-nix-cache to disable on 429 #15031 (xokdvium)
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libutil: Add PathFmt wrapped type for formatting fs::path, fix all double-quoting issues #15030 (xokdvium)
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libutil: add Signature struct for typed signatures #15029 (amaanq)
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Deduplicate copyFdRange with new readOffset #15028 (Ericson2314)
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libutil: add missing tracking URLs for external-builders and blake3-h… #15025 (cole-h)
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libstore: make withAWS depend on aws-c-common availability #15021 (OPNA2608)
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Use CompressionAlgo enum throughout #15020 (xokdvium)
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Catch SystemError in portable code #15015 (Ericson2314)
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nar-accessor: Fix thread safety of seekableGetNarBytes, use Sink, reduce memory usage of nix store cat #15013 (xokdvium)
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libutil: fix linux build on fresh glibc and gcc #15011 (trofi)
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tests: use valid signature format in protocol characterization tests #15010 (amaanq)
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Fix typo spotted by coderabbit #15008 (edolstra)
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doc: add nix-cache-info format documentation #15006 (roberth)
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Add Nix32 encoding documentation #15004 (roberth)
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libstore: Do not mark connections as bad when RemoteStore::narFromPath is called as a coroutine #14998 (xokdvium)
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Remove more obsolete daemon operations #14995 (edolstra)
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resolverCallbackWrapper(): Catch exceptions #14994 (edolstra)
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Limit the number of active curl handles #14993 (edolstra)
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More NAR accessor / listing cleanup #14990 (Ericson2314)
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Move LocalStore::querySubstitutablePaths() to Store #14989 (edolstra)
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Remove WorkerProto::Op::HasSubstitutes #14988 (edolstra)
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Two NAR accessor / listing cleanups #14986 (Ericson2314)
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More windows fixes #14984 (xokdvium)
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fetchTree: reject relative file: paths for tarballs #14983 (roberth)
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fixGitURL: fix crash for "relative" file: paths and reject unsupported SCP URLs #14981 (roberth)
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Use known folders for nix data on windows #14973 (xokdvium)
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Fix concurrent builder failure empty message bugs #14972 (roberth)
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Misc builder fixes #14971 (Ericson2314)
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Use openFileReadonly in more places #14970 (xokdvium)
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libutil: RestoreRegularFile is an FdSink #14968 (xokdvium)
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chore: replace edolstra/flake-compat with NixOS/flake-compat #14966 (drupol)
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systemd: Delegate cgroup management without turning on controllers. #14965 (shlevy)
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- skip
libflake-tests: fix leak in nix_api_store_test.nix_api_load_flake_with_flags #14963 (corngood)
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Fix mingw build (once again), add openFileReadonly and clean up error.hh to include WinError #14962 (xokdvium)
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libutil/union-source-accessor: Barf on non-existent directories #14961 (xokdvium)
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PathInputScheme::getAccessor(): Drop unnecessary call to queryPathInfo() #14960 (edolstra)
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Move {init,create}GitRepo to tests/functional/common/functions.sh #14959 (edolstra)
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SourceAccessor: Allow the lstat cache to be invalidated #14957 (edolstra)
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libutil-tests: fix openFileEnsureBeneathNoSymlinks.works on cygwin #14953 (corngood)
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- skip
Install nix-manual in default user profile #14952 (koberbe)
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Add example commands to source installation #14949 (iljah)
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RemoteFSAccessor: Make the local NAR cache content-addressed #14948 (edolstra)
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BinaryCacheStoreConfig: Change localNarCache to std::filesystem::path #14947 (edolstra)
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Fix structured-attrs test failure in dev shell #14946 (edolstra)
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- skip
Use unreachable in nix::listNarImpl() #14944 (iljah)
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libutil: Implement unix::fchmodatTryNoFollow, use in deletePath #14935 (xokdvium)
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Remove regex from isNixCommand #14928 (Zaczero)
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Remove redundant try/catch #14925 (Zaczero)
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Get rid of real store paths in docs/tests #14923 (edolstra)
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packaging: fix lowdown with overridden nixpkgs #14921 (zowoq)
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tests/functional: Reduce max-call-depth for stack overflow tests #14920 (xokdvium)
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Fix creation of cgroups #14919 (artemist)
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Rename realPathInSandbox() -> realPathInHost() #14918 (edolstra)
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ci: Stop uploading docker images for pre-release versions #14916 (xokdvium)
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fix: replace unused-result of set::extract with erase #14911 (tomfitzhenry)
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upload-release.pl: Fix up nix-channels bucket location, use awscli2 #14903 (xokdvium)
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Drop kaitai checks #14897 (xokdvium)
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libutil: Fix on freebsd #14896 (xokdvium)
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Undo accidental push to master #14894 (edolstra)
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Improve builtins.path docs wrt recursive, sha256 #14892 (roberth)
- has note
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clang-tidy cleanups #14890 (Mic92)
- has note
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ci: GitHub releng for release automation #14888 (xokdvium)
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docs: fix typos #14887 (steelman)
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eval-cache: fix parsing of contexts #14879 (ConnorBaker)
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ci: Run flake-regressions also with the newly built daemon #14874 (xokdvium)
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ci: Move docker_push_image into a separate workflow #14872 (xokdvium)
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daemon: fix deadlock when SSH client disconnects during remote builds #14865 (Mic92)
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- skip
libutil: Make MemorySourceAccessor throw more precise errors #14862 (xokdvium)
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- skip
fix: make --rebuild failures actionable #14855 (NoRePercussions)
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Fix empty input path segfault (#14816) #14846 (roberth)
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- skip
Add buffered line reads to BufferedSource #14845 (Zaczero)
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packaging: disable LTO on cygwin #14844 (corngood)
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docs: document older let expression syntax #14843 (mdaniels5757)
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docs: add missing semicolon to let-in grammar #14842 (mdaniels5757)
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docs: fix string interpolation links on syntax page #14841 (mdaniels5757)
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libstore/filetransfer: Fix double callback on enqueueFileTransfer that is shutting down #14838 (xokdvium)
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libstore/store-api: Do not query all substituters for substitutable p… #14837 (xokdvium)
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Fix reserve pitfall in printString #14835 (Zaczero)
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libutil: Gracefully fall back from unsupported O_TMPFILE #14832 (xokdvium)
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libstore: reuse parsed derivations in registerValidPaths #14828 (Zaczero)
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libexpr: add nix-expr-benchmarks, add regex optimizations #14827 (Zaczero)
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doc: drop rsync dependency from manual build #14824 (roberth)
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LocalBinaryCacheStore::upsertFile support slash in path #14821 (Ericson2314)
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Assorted windows fixes for libutil, HANDLEs and path handling #14819 (xokdvium)
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Fix up dev shell in a few ways #14818 (Ericson2314)
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Windows fixes #14817 (Ericson2314)
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libutil-tests: Add tests for makeFSSourceAccessor #14815 (xokdvium)
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libutil: Add CompressionAlgo enum, add Suggestions to UnknownCompress… #14814 (xokdvium)
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build(deps): bump actions/download-artifact from 6 to 7 #14808 (app/dependabot)
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build(deps): bump actions/upload-artifact from 5 to 6 #14807 (app/dependabot)
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build(deps): bump korthout/backport-action from 3.4.1 to 4.0.1 #14806 (app/dependabot)
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build(deps): bump cachix/install-nix-action from 31.8.4 to 31.9.0 #14805 (app/dependabot)
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manual: Add note on windows to use a git setting to avoid symlink issues in building #14804 (Eveeifyeve)
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nix: don't require ln to build libstore #14803 (Eveeifyeve)
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Improve the timeouts test #14802 (Ericson2314)
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Use coroutines for worker child I/O #14801 (Ericson2314)
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Use std::filesystem::path in DerivationBuilder #14800 (Ericson2314)
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libfetchers: Bump tarball-cache version to v2 #14799 (xokdvium)
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dev-shell: Set mesonBuildType to debugoptimized #14798 (edolstra)
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Add GitRepo::Options type #14795 (edolstra)
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Create substitution unit tests #14793 (Ericson2314)
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Fix curl with c-ares failing to resolve DNS inside sandbox on macOS #14792 (Enzime)
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treewide: Follow rule of five #14791 (xokdvium)
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Way more RAII for DerivationBuildingGoal #14788 (Ericson2314)
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libstore: include path in the world-writable error #14785 (YawKar)
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libstore: Clean up cruft from filetransfer #14781 (xokdvium)
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libutil/tarfile: Mention pathname in warning #14780 (xokdvium)
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test: add shebangs to shell.nix test scripts #14778 (agucova)
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Fix getenv segfault #14774 (roberth)
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[libstore]: Fix a heap-use-after-free bug #14772 (GrahamDennis)
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Bring nix derivation show in compliance with JSON guidelines #14770 (Ericson2314)
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Replace fetchToStore cache by sourcePathToHash cache #14769 (edolstra)
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C API: Add copy_path to Store API #14768 (pkpbynum)
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C API: Add query_from_hash_part to Store API #14766 (pkpbynum)
C API: New store API methods #14766
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Clean up structured attrs parsing using JSON utils #14754 (Ericson2314)
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Create proper serializer for BuildResult status #14749 (Ericson2314)
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flake: Bump nixpkgs to 25.11 #14688 (xokdvium)
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DrvOutputSubstitutionGoal: Don't actually fetch any store objects #14648 (Ericson2314)
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feat(libstore): add AWS SSO support for S3 authentication #14645 (lovesegfault)
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Fix most remaining stack overflows #14624 (roberth)
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nix-store --print-env: fix shell quoting on _args output #14329 (Mic92)
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Remove dependent realisations #14247 (Ericson2314)
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libstore/filetransfer: add support for MTLS authentication #13030 (vlaci)
Support HTTPS binary caches using mTLS (client certificate) authentication #13002 #13030
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Realisations use regular drv paths again #12464 (Ericson2314)
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Make GitFileSystemObjectSink multi-threaded #12087 (edolstra)
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Support systemd socket activation with multiple sockets #7892 (Ericson2314)
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philiptaron · 2026-03-05T19:11:55Z

This is really nice, Sergei. Way to go. I noticed the quality of the release notes and really appreciate it.

Release notes for 2.34.0

xokdvium added 3 commits February 27, 2026 22:03

release notes: 2.34.0

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xokdvium requested a review from edolstra as a code owner February 27, 2026 20:59

xokdvium added the documentation label Feb 27, 2026