Merge pull request #6036 from tweag/balsoft/and-yet-another-follows-bugfix
Flake follows: resolve all follows to absolute
This commit is contained in:
Eelco Dolstra
GitHub
commit
fcb33440b6
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@ -89,11 +89,11 @@ static void expectType(EvalState & state, ValueType type,
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static std::map<FlakeId, FlakeInput> parseFlakeInputs(
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EvalState & state, Value * value, const Pos & pos,
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const std::optional<Path> & baseDir);
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const std::optional<Path> & baseDir, InputPath lockRootPath);
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static FlakeInput parseFlakeInput(EvalState & state,
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const std::string & inputName, Value * value, const Pos & pos,
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const std::optional<Path> & baseDir)
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const std::optional<Path> & baseDir, InputPath lockRootPath)
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{
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expectType(state, nAttrs, *value, pos);
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@ -117,10 +117,12 @@ static FlakeInput parseFlakeInput(EvalState & state,
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expectType(state, nBool, *attr.value, *attr.pos);
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input.isFlake = attr.value->boolean;
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} else if (attr.name == sInputs) {
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input.overrides = parseFlakeInputs(state, attr.value, *attr.pos, baseDir);
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input.overrides = parseFlakeInputs(state, attr.value, *attr.pos, baseDir, lockRootPath);
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} else if (attr.name == sFollows) {
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expectType(state, nString, *attr.value, *attr.pos);
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input.follows = parseInputPath(attr.value->string.s);
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auto follows(parseInputPath(attr.value->string.s));
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follows.insert(follows.begin(), lockRootPath.begin(), lockRootPath.end());
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input.follows = follows;
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} else {
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switch (attr.value->type()) {
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case nString:
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@ -166,7 +168,7 @@ static FlakeInput parseFlakeInput(EvalState & state,
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static std::map<FlakeId, FlakeInput> parseFlakeInputs(
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EvalState & state, Value * value, const Pos & pos,
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const std::optional<Path> & baseDir)
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const std::optional<Path> & baseDir, InputPath lockRootPath)
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{
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std::map<FlakeId, FlakeInput> inputs;
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@ -178,7 +180,8 @@ static std::map<FlakeId, FlakeInput> parseFlakeInputs(
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inputAttr.name,
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inputAttr.value,
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*inputAttr.pos,
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baseDir));
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baseDir,
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lockRootPath));
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}
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return inputs;
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@ -188,7 +191,8 @@ static Flake getFlake(
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EvalState & state,
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const FlakeRef & originalRef,
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bool allowLookup,
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FlakeCache & flakeCache)
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FlakeCache & flakeCache,
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InputPath lockRootPath)
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{
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auto [sourceInfo, resolvedRef, lockedRef] = fetchOrSubstituteTree(
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state, originalRef, allowLookup, flakeCache);
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@ -223,7 +227,7 @@ static Flake getFlake(
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auto sInputs = state.symbols.create("inputs");
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if (auto inputs = vInfo.attrs->get(sInputs))
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flake.inputs = parseFlakeInputs(state, inputs->value, *inputs->pos, flakeDir);
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flake.inputs = parseFlakeInputs(state, inputs->value, *inputs->pos, flakeDir, lockRootPath);
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auto sOutputs = state.symbols.create("outputs");
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@ -289,6 +293,11 @@ static Flake getFlake(
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return flake;
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}
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Flake getFlake(EvalState & state, const FlakeRef & originalRef, bool allowLookup, FlakeCache & flakeCache)
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{
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return getFlake(state, originalRef, allowLookup, flakeCache, {});
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}
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Flake getFlake(EvalState & state, const FlakeRef & originalRef, bool allowLookup)
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{
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FlakeCache flakeCache;
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@ -334,22 +343,12 @@ LockedFlake lockFlake(
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std::vector<FlakeRef> parents;
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struct LockParent {
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/* The path to this parent. */
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InputPath path;
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/* Whether we are currently inside a top-level lockfile
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(inputs absolute) or subordinate lockfile (inputs
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relative). */
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bool absolute;
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};
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std::function<void(
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const FlakeInputs & flakeInputs,
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std::shared_ptr<Node> node,
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const InputPath & inputPathPrefix,
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std::shared_ptr<const Node> oldNode,
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const LockParent & parent,
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const InputPath & lockRootPath,
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const Path & parentPath,
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bool trustLock)>
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computeLocks;
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@ -359,7 +358,7 @@ LockedFlake lockFlake(
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std::shared_ptr<Node> node,
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const InputPath & inputPathPrefix,
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std::shared_ptr<const Node> oldNode,
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const LockParent & parent,
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const InputPath & lockRootPath,
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const Path & parentPath,
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bool trustLock)
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{
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@ -404,17 +403,7 @@ LockedFlake lockFlake(
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if (input.follows) {
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InputPath target;
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if (parent.absolute && !hasOverride) {
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target = *input.follows;
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} else {
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if (hasOverride) {
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target = inputPathPrefix;
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target.pop_back();
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} else
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target = parent.path;
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for (auto & i : *input.follows) target.push_back(i);
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}
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target.insert(target.end(), input.follows->begin(), input.follows->end());
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debug("input '%s' follows '%s'", inputPathS, printInputPath(target));
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node->inputs.insert_or_assign(id, target);
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@ -487,23 +476,25 @@ LockedFlake lockFlake(
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break;
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}
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}
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auto absoluteFollows(lockRootPath);
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absoluteFollows.insert(absoluteFollows.end(), follows->begin(), follows->end());
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fakeInputs.emplace(i.first, FlakeInput {
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.follows = *follows,
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.follows = absoluteFollows,
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});
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}
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}
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}
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LockParent newParent {
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.path = inputPath,
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.absolute = true
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};
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auto localPath(parentPath);
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// If this input is a path, recurse it down.
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// This allows us to resolve path inputs relative to the current flake.
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if ((*input.ref).input.getType() == "path")
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localPath = absPath(*input.ref->input.getSourcePath(), parentPath);
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computeLocks(
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mustRefetch
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? getFlake(state, oldLock->lockedRef, false, flakeCache).inputs
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? getFlake(state, oldLock->lockedRef, false, flakeCache, inputPath).inputs
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: fakeInputs,
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childNode, inputPath, oldLock, newParent, parentPath, !mustRefetch);
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childNode, inputPath, oldLock, lockRootPath, parentPath, !mustRefetch);
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} else {
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/* We need to create a new lock file entry. So fetch
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@ -522,7 +513,7 @@ LockedFlake lockFlake(
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if (localRef.input.getType() == "path")
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localPath = absPath(*input.ref->input.getSourcePath(), parentPath);
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auto inputFlake = getFlake(state, localRef, useRegistries, flakeCache);
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auto inputFlake = getFlake(state, localRef, useRegistries, flakeCache, inputPath);
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/* Note: in case of an --override-input, we use
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the *original* ref (input2.ref) for the
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@ -543,13 +534,6 @@ LockedFlake lockFlake(
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parents.push_back(*input.ref);
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Finally cleanup([&]() { parents.pop_back(); });
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// Follows paths from existing inputs in the top-level lockfile are absolute,
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// whereas paths in subordinate lockfiles are relative to those lockfiles.
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LockParent newParent {
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.path = inputPath,
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.absolute = oldLock ? true : false
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};
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/* Recursively process the inputs of this
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flake. Also, unless we already have this flake
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in the top-level lock file, use this flake's
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@ -560,7 +544,7 @@ LockedFlake lockFlake(
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? std::dynamic_pointer_cast<const Node>(oldLock)
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: LockFile::read(
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inputFlake.sourceInfo->actualPath + "/" + inputFlake.lockedRef.subdir + "/flake.lock").root,
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newParent, localPath, false);
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oldLock ? lockRootPath : inputPath, localPath, false);
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}
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else {
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@ -578,17 +562,12 @@ LockedFlake lockFlake(
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}
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};
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LockParent parent {
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.path = {},
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.absolute = true
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};
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// Bring in the current ref for relative path resolution if we have it
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auto parentPath = canonPath(flake.sourceInfo->actualPath + "/" + flake.lockedRef.subdir, true);
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computeLocks(
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flake.inputs, newLockFile.root, {},
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lockFlags.recreateLockFile ? nullptr : oldLockFile.root, parent, parentPath, false);
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lockFlags.recreateLockFile ? nullptr : oldLockFile.root, {}, parentPath, false);
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for (auto & i : lockFlags.inputOverrides)
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if (!overridesUsed.count(i.first))
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@ -730,6 +730,7 @@ cat > $flakeFollowsB/flake.nix <<EOF
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description = "Flake B";
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inputs = {
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foobar.url = "path:$flakeFollowsA/flakeE";
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goodoo.follows = "C/goodoo";
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C = {
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url = "path:./flakeC";
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inputs.foobar.follows = "foobar";
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@ -744,6 +745,7 @@ cat > $flakeFollowsC/flake.nix <<EOF
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description = "Flake C";
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inputs = {
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foobar.url = "path:$flakeFollowsA/flakeE";
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goodoo.follows = "foobar";
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};
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outputs = { ... }: {};
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}
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@ -759,7 +761,7 @@ EOF
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cat > $flakeFollowsE/flake.nix <<EOF
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{
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description = "Flake D";
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description = "Flake E";
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inputs = {};
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outputs = { ... }: {};
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}
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@ -768,6 +770,8 @@ EOF
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git -C $flakeFollowsA add flake.nix flakeB/flake.nix \
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flakeB/flakeC/flake.nix flakeD/flake.nix flakeE/flake.nix
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nix flake metadata $flakeFollowsA
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nix flake update $flakeFollowsA
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oldLock="$(cat "$flakeFollowsA/flake.lock")"
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