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handle circular flake dependencies in list-inputs

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This commit is contained in:
Matthew Kenigsberg 2020-05-21 16:58:02 -06:00
parent 5f64655ff4
commit 8d67794da1
1 changed files with 9 additions and 3 deletions
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12
src/nix/flake.cc
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@ -158,20 +158,26 @@ struct CmdFlakeListInputs : FlakeCommand, MixJSON
else {
logger->stdout("%s", flake.flake.lockedRef);
std::unordered_set<std::shared_ptr<Node>> visited;
std::function<void(const Node & node, const std::string & prefix)> recurse;
recurse = [&](const Node & node, const std::string & prefix)
{
for (const auto & [i, input] : enumerate(node.inputs)) {
//auto tree2 = tree.child(i + 1 == inputs.inputs.size());
bool firstVisit = visited.insert(input.second).second;
bool last = i + 1 == node.inputs.size();
auto lockedNode = std::dynamic_pointer_cast<const LockedNode>(input.second);
logger->stdout("%s" ANSI_BOLD "%s" ANSI_NORMAL ": %s",
prefix + (last ? treeLast : treeConn), input.first,
std::dynamic_pointer_cast<const LockedNode>(input.second)->lockedRef);
recurse(*input.second, prefix + (last ? treeNull : treeLine));
lockedNode ? lockedNode->lockedRef : flake.flake.lockedRef);
if (firstVisit) recurse(*input.second, prefix + (last ? treeNull : treeLine));
}
};
visited.insert(flake.lockFile.root);
recurse(*flake.lockFile.root, "");
}
}