nix-cli: use pure/restricted eval for help pages#14086
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edolstra merged 1 commit intoNixOS:masterfrom Sep 26, 2025
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This avoids any complications that can arise from the environment affecting evaluation of the help pages (which don't need to be calling out to anything external anyways) A recent example of one of these problems is NixOS#14085, which would break help pages by causing them to make invalid calls to the dummy store they're evaluated with Fixes: NixOS#14062 Co-authored-by: Sergei Zimmerman <sergei@zimmerman.foo>
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This avoids any complications that can arise from the environment affecting evaluation of the help pages (which don't need to be calling out to anything external anyways) I don't think this is actively causing problems now - though it did in Nix! - so this is largely preventative, but I don't really see a reason why this was ever running in impure mode in the first place either Based-on: NixOS/nix#14086 Co-authored-by: Sergei Zimmerman <sergei@zimmerman.foo> Change-Id: Ice0c760562d70c09934249edc3b767473516d372
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## Bug fixes (crashes) - Fix segfaults from `toView()` when compiled with newer nixpkgs (NixOS/nix#14154) - Fix use-after-move in `DerivationGoal::repairClosure` and `SampleStack` (NixOS/nix#14086) - Fix assertion failure on partially valid derivation outputs (NixOS/nix#14137) - Fix `RestrictedStore::addDependency` recursion causing crashes (NixOS/nix#14729) - Fix crash on flakerefs containing newlines (NixOS/nix#14450) ## Bug fixes (functionality) - Fix fakeSSH check breaking SSH copies with `user@host` format (NixOS/nix#14150) - Fix `builtins.dirOf` regression from Nix 2.23 (NixOS/nix#14515) - Restore missing `isAllowed` check in `ChrootLinuxDerivationBuilder` (NixOS/nix#14531) - Fix curl with c-ares failing to resolve DNS in sandbox on macOS (NixOS/nix#14792) - Fix tarball percent decoding for `file://` URIs (NixOS/nix#14729) - `exportReferencesGraph`: Handle heterogeneous arrays (NixOS/nix#13861) - Fix filesystem ops in store optimization (NixOS/nix#14676) ## Bug fixes (output) - Fix double-quoting of paths in logs (NixOS/nix#14210) - Include path in world-writable error messages (NixOS/nix#14785) ## Improvements - Better git refnames validation (NixOS/nix#14253) - Use pure/restricted eval for help pages (NixOS/nix#14156) - Improve store-reference compatibility with IPv6 ZoneId literals (NixOS/nix#14134) - Correct `build-dir` error in manual (NixOS/nix#14745) ## Build system - Add mdbook 0.5 support (NixOS/nix#14690) - Drop legacy Apple SDK pattern (NixOS/nix#13976) https://github.com/NixOS/nix/releases/tag/2.31.3
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Changelog of fixes: ## Bug fixes (crashes) - Fix segfaults from `toView()` when compiled with newer nixpkgs (NixOS/nix#14154) - Fix use-after-move in `DerivationGoal::repairClosure` and `SampleStack` (NixOS/nix#14086) - Fix assertion failure on partially valid derivation outputs (NixOS/nix#14137) - Fix `RestrictedStore::addDependency` recursion causing crashes (NixOS/nix#14729) - Fix crash on flakerefs containing newlines (NixOS/nix#14450) ## Bug fixes (functionality) - Fix fakeSSH check breaking SSH copies with `user@host` format (NixOS/nix#14150) - Fix `builtins.dirOf` regression from Nix 2.23 (NixOS/nix#14515) - Restore missing `isAllowed` check in `ChrootLinuxDerivationBuilder` (NixOS/nix#14531) - Fix curl with c-ares failing to resolve DNS in sandbox on macOS (NixOS/nix#14792) - Fix tarball percent decoding for `file://` URIs (NixOS/nix#14729) - `exportReferencesGraph`: Handle heterogeneous arrays (NixOS/nix#13861) - Fix filesystem ops in store optimization (NixOS/nix#14676) ## Bug fixes (output) - Fix double-quoting of paths in logs (NixOS/nix#14210) - Include path in world-writable error messages (NixOS/nix#14785) ## Improvements - Better git refnames validation (NixOS/nix#14253) - Use pure/restricted eval for help pages (NixOS/nix#14156) - Improve store-reference compatibility with IPv6 ZoneId literals (NixOS/nix#14134) - Correct `build-dir` error in manual (NixOS/nix#14745) ## Build system - Add mdbook 0.5 support (NixOS/nix#14690) - Drop legacy Apple SDK pattern (NixOS/nix#13976) https://github.com/NixOS/nix/releases/tag/2.31.3
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philiptaron
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Changelog of fixes: ## Bug fixes (crashes) - Fix segfaults from `toView()` when compiled with newer nixpkgs (NixOS/nix#14154) - Fix use-after-move in `DerivationGoal::repairClosure` and `SampleStack` (NixOS/nix#14086) - Fix assertion failure on partially valid derivation outputs (NixOS/nix#14137) - Fix `RestrictedStore::addDependency` recursion causing crashes (NixOS/nix#14729) - Fix crash on flakerefs containing newlines (NixOS/nix#14450) ## Bug fixes (functionality) - Fix fakeSSH check breaking SSH copies with `user@host` format (NixOS/nix#14150) - Fix `builtins.dirOf` regression from Nix 2.23 (NixOS/nix#14515) - Restore missing `isAllowed` check in `ChrootLinuxDerivationBuilder` (NixOS/nix#14531) - Fix curl with c-ares failing to resolve DNS in sandbox on macOS (NixOS/nix#14792) - Fix tarball percent decoding for `file://` URIs (NixOS/nix#14729) - `exportReferencesGraph`: Handle heterogeneous arrays (NixOS/nix#13861) - Fix filesystem ops in store optimization (NixOS/nix#14676) ## Bug fixes (output) - Fix double-quoting of paths in logs (NixOS/nix#14210) - Include path in world-writable error messages (NixOS/nix#14785) ## Improvements - Better git refnames validation (NixOS/nix#14253) - Use pure/restricted eval for help pages (NixOS/nix#14156) - Improve store-reference compatibility with IPv6 ZoneId literals (NixOS/nix#14134) - Correct `build-dir` error in manual (NixOS/nix#14745) ## Build system - Add mdbook 0.5 support (NixOS/nix#14690) - Drop legacy Apple SDK pattern (NixOS/nix#13976) https://github.com/NixOS/nix/releases/tag/2.31.3
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Motivation
Note
This patch was sent to me on Matrix by @xokdvium. Thanks!
This avoids any complications that can arise from the environment
affecting evaluation of the help pages (which don't need to be calling
out to anything external anyways)
A recent example of one of these problems is
#14085, which would break help pages
by causing them to make invalid calls to the dummy store they're
evaluated with
Context
Fixes #14062
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