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fetchGit/fetchTree: Allow fetching using only a NAR hash

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Fixes #12027.
This commit is contained in:
Eelco Dolstra 2025-01-28 21:53:57 +01:00
parent a142803c28
commit 5dec1dc086
2 changed files with 13 additions and 7 deletions
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13
src/libexpr/primops/fetchTree.cc
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@ -184,10 +184,15 @@ static void fetchTree(
input = lookupInRegistries(state.store, input).first;
if (state.settings.pureEval && !input.isConsideredLocked(state.fetchSettings)) {
state.error<EvalError>(
"in pure evaluation mode, '%s' will not fetch unlocked input '%s'",
fetcher, input.to_string()
).atPos(pos).debugThrow();
if (input.getNarHash())
warn(
"Input '%s' is unlocked (e.g. lacks a Git revision) but does have a NAR hash. "
"This is deprecated since such inputs are verifiable but may not be reproducible.",
input.to_string());
else
state.error<EvalError>(
"in pure evaluation mode, '%s' will not fetch unlocked input '%s'",
fetcher, input.to_string()).atPos(pos).debugThrow();
}
state.checkURI(input.toURLString());