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Fix transitive input locking.

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Fixes reproducibility issue described in #9143

Fixes #9143
This commit is contained in:
Vladimir Kryachko 2023-10-16 16:51:49 -04:00
parent 201c115c3e
commit a2f0ba6a6d
1 changed files with 7 additions and 3 deletions
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10
src/libexpr/flake/flake.cc
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@ -351,10 +351,13 @@ LockedFlake lockFlake(
debug("old lock file: %s", oldLockFile);
std::map<InputPath, FlakeInput> overrides;
std::set<InputPath> explicitCliOverrides;
std::set<InputPath> overridesUsed, updatesUsed;
for (auto & i : lockFlags.inputOverrides)
for (auto & i : lockFlags.inputOverrides) {
overrides.insert_or_assign(i.first, FlakeInput { .ref = i.second });
explicitCliOverrides.insert(i.first);
}
LockFile newLockFile;
@ -425,6 +428,7 @@ LockedFlake lockFlake(
ancestors? */
auto i = overrides.find(inputPath);
bool hasOverride = i != overrides.end();
bool hasCliOverride = explicitCliOverrides.find(inputPath) != explicitCliOverrides.end();
if (hasOverride) {
overridesUsed.insert(inputPath);
// Respect the “flakeness” of the input even if we
@ -460,7 +464,7 @@ LockedFlake lockFlake(
if (oldLock
&& oldLock->originalRef == *input.ref
&& !hasOverride)
&& !hasCliOverride)
{
debug("keeping existing input '%s'", inputPathS);
@ -541,7 +545,7 @@ LockedFlake lockFlake(
nuked the next time we update the lock
file. That is, overrides are sticky unless you
use --no-write-lock-file. */
auto ref = input2.ref ? *input2.ref : *input.ref;
auto ref = (input2.ref && explicitCliOverrides.contains(inputPath)) ? *input2.ref : *input.ref;
if (input.isFlake) {
Path localPath = parentPath;