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Move substitution into Input::fetch()

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Closes #3520.
This commit is contained in:
Eelco Dolstra 2020-05-30 01:16:53 +02:00
parent 0e7f77a59a
commit 89e0b3e2d6
3 changed files with 20 additions and 55 deletions
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30
src/libexpr/flake/flake.cc
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@ -52,36 +52,6 @@ static std::tuple<fetchers::Tree, FlakeRef, FlakeRef> fetchOrSubstituteTree(
bool allowLookup,
FlakeCache & flakeCache)
{
/* The tree may already be in the Nix store, or it could be
substituted (which is often faster than fetching from the
original source). So check that. */
if (originalRef.input.isDirect() && originalRef.input.isImmutable() && originalRef.input.hasAllInfo()) {
try {
auto storePath = originalRef.input.computeStorePath(*state.store);
state.store->ensurePath(storePath);
debug("using substituted/cached input '%s' in '%s'",
originalRef, state.store->printStorePath(storePath));
auto actualPath = state.store->toRealPath(storePath);
if (state.allowedPaths)
state.allowedPaths->insert(actualPath);
return {
Tree {
.actualPath = actualPath,
.storePath = std::move(storePath),
},
originalRef,
originalRef
};
} catch (Error & e) {
debug("substitution of input '%s' failed: %s", originalRef, e.what());
}
}
auto resolvedRef = lookupInFlakeCache(flakeCache,
maybeLookupFlake(state.store,
lookupInFlakeCache(flakeCache, originalRef), allowLookup));