nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-12-08 18:11:02 +01:00
Code Activity

Merge pull request #113 from DeterminateSystems/eelcodolstra/fh-851-lock-nar-hashes-by-default

Browse source 
Add lazy-locks setting
This commit is contained in:
Eelco Dolstra 2025-06-19 17:01:14 +00:00 • committed by GitHub
commit 1d5e161755
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
4 changed files with 20 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

13
src/libexpr/include/nix/expr/eval-settings.hh
View file

@ -262,6 +262,19 @@ struct EvalSettings : Config
R"(
If set to true, flakes and trees fetched by [`builtins.fetchTree`](@docroot@/language/builtins.md#builtins-fetchTree) are only copied to the Nix store when they're used as a dependency of a derivation. This avoids copying (potentially large) source trees unnecessarily.
)"};
// FIXME: this setting should really be in libflake, but it's
// currently needed in mountInput().
Setting<bool> lazyLocks{
this,
false,
"lazy-locks",
R"(
If enabled, Nix only includes NAR hashes in lock file entries if they're necessary to lock the input (i.e. when there is no other attribute that allows the content to be verified, like a Git revision).
This is not backward compatible with older versions of Nix.
If disabled, lock file entries always contain a NAR hash.
)"
};
};
/**

2
src/libexpr/paths.cc
View file

@ -91,7 +91,7 @@ StorePath EvalState::mountInput(
storeFS->mount(CanonPath(store->printStorePath(storePath)), accessor);
if (requireLockable && (!settings.lazyTrees || !input.isLocked()) && !input.getNarHash())
if (requireLockable && (!settings.lazyTrees || !settings.lazyLocks || !input.isLocked()) && !input.getNarHash())
input.attrs.insert_or_assign("narHash", getNarHash()->to_string(HashFormat::SRI, true));
if (originalInput.getNarHash() && *getNarHash() != *originalInput.getNarHash())