Add traces to errors while updating flake lock file
Example: $ nix build --show-trace error: unable to download 'https://api.github.com/repos/NixOS/nixpkgs/commits/no-such-branch': HTTP error 422 ('') response body: { "message": "No commit found for SHA: no-such-branch", "documentation_url": "https://docs.github.com/rest/reference/repos#get-a-commit" } … while fetching the input 'github:NixOS/nixpkgs/no-such-branch' … while updating the flake input 'nixpkgs' … while updating the lock file of flake 'git+file:///home/eelco/Dev/nix'
This commit is contained in:
Eelco Dolstra
parent
8e758d402b
commit
c03f41055d
2 changed files with 252 additions and 231 deletions
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@ -298,284 +298,298 @@ LockedFlake lockFlake(
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auto flake = getFlake(state, topRef, lockFlags.useRegistries, flakeCache);
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// FIXME: symlink attack
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auto oldLockFile = LockFile::read(
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flake.sourceInfo->actualPath + "/" + flake.lockedRef.subdir + "/flake.lock");
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try {
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debug("old lock file: %s", oldLockFile);
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// FIXME: symlink attack
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auto oldLockFile = LockFile::read(
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flake.sourceInfo->actualPath + "/" + flake.lockedRef.subdir + "/flake.lock");
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// FIXME: check whether all overrides are used.
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std::map<InputPath, FlakeInput> overrides;
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std::set<InputPath> overridesUsed, updatesUsed;
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debug("old lock file: %s", oldLockFile);
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for (auto & i : lockFlags.inputOverrides)
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overrides.insert_or_assign(i.first, FlakeInput { .ref = i.second });
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// FIXME: check whether all overrides are used.
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std::map<InputPath, FlakeInput> overrides;
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std::set<InputPath> overridesUsed, updatesUsed;
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LockFile newLockFile;
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for (auto & i : lockFlags.inputOverrides)
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overrides.insert_or_assign(i.first, FlakeInput { .ref = i.second });
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std::vector<FlakeRef> parents;
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LockFile newLockFile;
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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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computeLocks;
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std::vector<FlakeRef> parents;
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computeLocks = [&](
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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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{
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debug("computing lock file node '%s'", printInputPath(inputPathPrefix));
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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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computeLocks;
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/* Get the overrides (i.e. attributes of the form
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'inputs.nixops.inputs.nixpkgs.url = ...'). */
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// FIXME: check this
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for (auto & [id, input] : flake.inputs) {
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for (auto & [idOverride, inputOverride] : input.overrides) {
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computeLocks = [&](
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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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{
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debug("computing lock file node '%s'", printInputPath(inputPathPrefix));
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/* Get the overrides (i.e. attributes of the form
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'inputs.nixops.inputs.nixpkgs.url = ...'). */
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// FIXME: check this
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for (auto & [id, input] : flake.inputs) {
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for (auto & [idOverride, inputOverride] : input.overrides) {
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auto inputPath(inputPathPrefix);
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inputPath.push_back(id);
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inputPath.push_back(idOverride);
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overrides.insert_or_assign(inputPath, inputOverride);
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}
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}
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/* Go over the flake inputs, resolve/fetch them if
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necessary (i.e. if they're new or the flakeref changed
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from what's in the lock file). */
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for (auto & [id, input2] : flakeInputs) {
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auto inputPath(inputPathPrefix);
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inputPath.push_back(id);
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inputPath.push_back(idOverride);
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overrides.insert_or_assign(inputPath, inputOverride);
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}
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}
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auto inputPathS = printInputPath(inputPath);
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debug("computing input '%s'", inputPathS);
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/* Go over the flake inputs, resolve/fetch them if
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necessary (i.e. if they're new or the flakeref changed
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from what's in the lock file). */
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for (auto & [id, input2] : flakeInputs) {
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auto inputPath(inputPathPrefix);
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inputPath.push_back(id);
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auto inputPathS = printInputPath(inputPath);
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debug("computing input '%s'", inputPathS);
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try {
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/* Do we have an override for this input from one of the
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ancestors? */
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auto i = overrides.find(inputPath);
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bool hasOverride = i != overrides.end();
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if (hasOverride) overridesUsed.insert(inputPath);
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auto & input = hasOverride ? i->second : input2;
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/* Do we have an override for this input from one of the
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ancestors? */
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auto i = overrides.find(inputPath);
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bool hasOverride = i != overrides.end();
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if (hasOverride) overridesUsed.insert(inputPath);
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auto & input = hasOverride ? i->second : input2;
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/* Resolve 'follows' later (since it may refer to an input
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path we haven't processed yet. */
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if (input.follows) {
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InputPath target;
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if (hasOverride || input.absolute)
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/* 'follows' from an override is relative to the
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root of the graph. */
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target = *input.follows;
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else {
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/* Otherwise, it's relative to the current flake. */
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target = inputPathPrefix;
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for (auto & i : *input.follows) target.push_back(i);
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}
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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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continue;
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}
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/* Resolve 'follows' later (since it may refer to an input
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path we haven't processed yet. */
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if (input.follows) {
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InputPath target;
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if (hasOverride || input.absolute)
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/* 'follows' from an override is relative to the
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root of the graph. */
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target = *input.follows;
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else {
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/* Otherwise, it's relative to the current flake. */
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target = inputPathPrefix;
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for (auto & i : *input.follows) target.push_back(i);
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}
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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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continue;
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}
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assert(input.ref);
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assert(input.ref);
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/* Do we have an entry in the existing lock file? And we
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don't have a --update-input flag for this input? */
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std::shared_ptr<LockedNode> oldLock;
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/* Do we have an entry in the existing lock file? And we
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don't have a --update-input flag for this input? */
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std::shared_ptr<LockedNode> oldLock;
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updatesUsed.insert(inputPath);
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updatesUsed.insert(inputPath);
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if (oldNode && !lockFlags.inputUpdates.count(inputPath))
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if (auto oldLock2 = get(oldNode->inputs, id))
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if (auto oldLock3 = std::get_if<0>(&*oldLock2))
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oldLock = *oldLock3;
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if (oldNode && !lockFlags.inputUpdates.count(inputPath))
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if (auto oldLock2 = get(oldNode->inputs, id))
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if (auto oldLock3 = std::get_if<0>(&*oldLock2))
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oldLock = *oldLock3;
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if (oldLock
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&& oldLock->originalRef == *input.ref
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&& !hasOverride)
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{
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debug("keeping existing input '%s'", inputPathS);
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if (oldLock
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&& oldLock->originalRef == *input.ref
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&& !hasOverride)
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{
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debug("keeping existing input '%s'", inputPathS);
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/* Copy the input from the old lock since its flakeref
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didn't change and there is no override from a
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higher level flake. */
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auto childNode = std::make_shared<LockedNode>(
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oldLock->lockedRef, oldLock->originalRef, oldLock->isFlake);
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/* Copy the input from the old lock since its flakeref
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didn't change and there is no override from a
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higher level flake. */
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auto childNode = std::make_shared<LockedNode>(
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oldLock->lockedRef, oldLock->originalRef, oldLock->isFlake);
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node->inputs.insert_or_assign(id, childNode);
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node->inputs.insert_or_assign(id, childNode);
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/* If we have an --update-input flag for an input
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of this input, then we must fetch the flake to
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update it. */
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auto lb = lockFlags.inputUpdates.lower_bound(inputPath);
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/* If we have an --update-input flag for an input
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of this input, then we must fetch the flake to
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update it. */
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auto lb = lockFlags.inputUpdates.lower_bound(inputPath);
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auto hasChildUpdate =
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lb != lockFlags.inputUpdates.end()
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&& lb->size() > inputPath.size()
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&& std::equal(inputPath.begin(), inputPath.end(), lb->begin());
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auto hasChildUpdate =
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lb != lockFlags.inputUpdates.end()
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&& lb->size() > inputPath.size()
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&& std::equal(inputPath.begin(), inputPath.end(), lb->begin());
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if (hasChildUpdate) {
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auto inputFlake = getFlake(
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state, oldLock->lockedRef, false, flakeCache);
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computeLocks(inputFlake.inputs, childNode, inputPath, oldLock);
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} else {
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/* No need to fetch this flake, we can be
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lazy. However there may be new overrides on the
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inputs of this flake, so we need to check
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those. */
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FlakeInputs fakeInputs;
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if (hasChildUpdate) {
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auto inputFlake = getFlake(
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state, oldLock->lockedRef, false, flakeCache);
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computeLocks(inputFlake.inputs, childNode, inputPath, oldLock);
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} else {
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/* No need to fetch this flake, we can be
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lazy. However there may be new overrides on the
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inputs of this flake, so we need to check
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those. */
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FlakeInputs fakeInputs;
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for (auto & i : oldLock->inputs) {
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if (auto lockedNode = std::get_if<0>(&i.second)) {
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fakeInputs.emplace(i.first, FlakeInput {
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.ref = (*lockedNode)->originalRef,
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.isFlake = (*lockedNode)->isFlake,
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});
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} else if (auto follows = std::get_if<1>(&i.second)) {
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fakeInputs.emplace(i.first, FlakeInput {
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.follows = *follows,
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.absolute = true
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});
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for (auto & i : oldLock->inputs) {
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if (auto lockedNode = std::get_if<0>(&i.second)) {
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fakeInputs.emplace(i.first, FlakeInput {
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.ref = (*lockedNode)->originalRef,
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.isFlake = (*lockedNode)->isFlake,
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});
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} else if (auto follows = std::get_if<1>(&i.second)) {
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fakeInputs.emplace(i.first, FlakeInput {
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.follows = *follows,
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.absolute = true
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});
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}
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}
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computeLocks(fakeInputs, childNode, inputPath, oldLock);
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}
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} else {
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/* We need to create a new lock file entry. So fetch
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this input. */
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debug("creating new input '%s'", inputPathS);
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if (!lockFlags.allowMutable && !input.ref->input.isImmutable())
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throw Error("cannot update flake input '%s' in pure mode", inputPathS);
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if (input.isFlake) {
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auto inputFlake = getFlake(state, *input.ref, lockFlags.useRegistries, flakeCache);
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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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"original" field, rather than the
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override. This ensures that the override isn't
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nuked the next time we update the lock
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file. That is, overrides are sticky unless you
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use --no-write-lock-file. */
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auto childNode = std::make_shared<LockedNode>(
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inputFlake.lockedRef, input2.ref ? *input2.ref : *input.ref);
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node->inputs.insert_or_assign(id, childNode);
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/* Guard against circular flake imports. */
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for (auto & parent : parents)
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if (parent == *input.ref)
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throw Error("found circular import of flake '%s'", parent);
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parents.push_back(*input.ref);
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Finally cleanup([&]() { parents.pop_back(); });
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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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own lock file. */
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computeLocks(
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inputFlake.inputs, childNode, inputPath,
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oldLock
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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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}
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else {
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auto [sourceInfo, resolvedRef, lockedRef] = fetchOrSubstituteTree(
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state, *input.ref, lockFlags.useRegistries, flakeCache);
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node->inputs.insert_or_assign(id,
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std::make_shared<LockedNode>(lockedRef, *input.ref, false));
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}
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}
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computeLocks(fakeInputs, childNode, inputPath, oldLock);
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}
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} else {
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/* We need to create a new lock file entry. So fetch
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this input. */
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debug("creating new input '%s'", inputPathS);
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if (!lockFlags.allowMutable && !input.ref->input.isImmutable())
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throw Error("cannot update flake input '%s' in pure mode", inputPathS);
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if (input.isFlake) {
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auto inputFlake = getFlake(state, *input.ref, lockFlags.useRegistries, flakeCache);
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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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"original" field, rather than the
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override. This ensures that the override isn't
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nuked the next time we update the lock
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file. That is, overrides are sticky unless you
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use --no-write-lock-file. */
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auto childNode = std::make_shared<LockedNode>(
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inputFlake.lockedRef, input2.ref ? *input2.ref : *input.ref);
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node->inputs.insert_or_assign(id, childNode);
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/* Guard against circular flake imports. */
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for (auto & parent : parents)
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if (parent == *input.ref)
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throw Error("found circular import of flake '%s'", parent);
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parents.push_back(*input.ref);
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Finally cleanup([&]() { parents.pop_back(); });
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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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own lock file. */
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computeLocks(
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inputFlake.inputs, childNode, inputPath,
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oldLock
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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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}
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else {
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auto [sourceInfo, resolvedRef, lockedRef] = fetchOrSubstituteTree(
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state, *input.ref, lockFlags.useRegistries, flakeCache);
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node->inputs.insert_or_assign(id,
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std::make_shared<LockedNode>(lockedRef, *input.ref, false));
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} catch (Error & e) {
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e.addTrace({}, "while updating the flake input '%s'", inputPathS);
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throw;
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}
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}
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}
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};
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};
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computeLocks(
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flake.inputs, newLockFile.root, {},
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lockFlags.recreateLockFile ? nullptr : oldLockFile.root);
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computeLocks(
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flake.inputs, newLockFile.root, {},
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lockFlags.recreateLockFile ? nullptr : oldLockFile.root);
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for (auto & i : lockFlags.inputOverrides)
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if (!overridesUsed.count(i.first))
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warn("the flag '--override-input %s %s' does not match any input",
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printInputPath(i.first), i.second);
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for (auto & i : lockFlags.inputOverrides)
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if (!overridesUsed.count(i.first))
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warn("the flag '--override-input %s %s' does not match any input",
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printInputPath(i.first), i.second);
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for (auto & i : lockFlags.inputUpdates)
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if (!updatesUsed.count(i))
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warn("the flag '--update-input %s' does not match any input", printInputPath(i));
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for (auto & i : lockFlags.inputUpdates)
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if (!updatesUsed.count(i))
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warn("the flag '--update-input %s' does not match any input", printInputPath(i));
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/* Check 'follows' inputs. */
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newLockFile.check();
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/* Check 'follows' inputs. */
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newLockFile.check();
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debug("new lock file: %s", newLockFile);
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debug("new lock file: %s", newLockFile);
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/* Check whether we need to / can write the new lock file. */
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if (!(newLockFile == oldLockFile)) {
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/* Check whether we need to / can write the new lock file. */
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if (!(newLockFile == oldLockFile)) {
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auto diff = LockFile::diff(oldLockFile, newLockFile);
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auto diff = LockFile::diff(oldLockFile, newLockFile);
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if (lockFlags.writeLockFile) {
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if (auto sourcePath = topRef.input.getSourcePath()) {
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if (!newLockFile.isImmutable()) {
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if (settings.warnDirty)
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warn("will not write lock file of flake '%s' because it has a mutable input", topRef);
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} else {
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if (!lockFlags.updateLockFile)
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throw Error("flake '%s' requires lock file changes but they're not allowed due to '--no-update-lock-file'", topRef);
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if (lockFlags.writeLockFile) {
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if (auto sourcePath = topRef.input.getSourcePath()) {
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if (!newLockFile.isImmutable()) {
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if (settings.warnDirty)
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warn("will not write lock file of flake '%s' because it has a mutable input", topRef);
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} else {
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if (!lockFlags.updateLockFile)
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throw Error("flake '%s' requires lock file changes but they're not allowed due to '--no-update-lock-file'", topRef);
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|
||||
auto relPath = (topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock";
|
||||
auto relPath = (topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock";
|
||||
|
||||
auto path = *sourcePath + "/" + relPath;
|
||||
auto path = *sourcePath + "/" + relPath;
|
||||
|
||||
bool lockFileExists = pathExists(path);
|
||||
bool lockFileExists = pathExists(path);
|
||||
|
||||
if (lockFileExists) {
|
||||
auto s = chomp(diff);
|
||||
if (s.empty())
|
||||
warn("updating lock file '%s'", path);
|
||||
else
|
||||
warn("updating lock file '%s':\n%s", path, s);
|
||||
} else
|
||||
warn("creating lock file '%s'", path);
|
||||
if (lockFileExists) {
|
||||
auto s = chomp(diff);
|
||||
if (s.empty())
|
||||
warn("updating lock file '%s'", path);
|
||||
else
|
||||
warn("updating lock file '%s':\n%s", path, s);
|
||||
} else
|
||||
warn("creating lock file '%s'", path);
|
||||
|
||||
newLockFile.write(path);
|
||||
newLockFile.write(path);
|
||||
|
||||
topRef.input.markChangedFile(
|
||||
(topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock",
|
||||
lockFlags.commitLockFile
|
||||
? std::optional<std::string>(fmt("%s: %s\n\nFlake input changes:\n\n%s",
|
||||
relPath, lockFileExists ? "Update" : "Add", diff))
|
||||
: std::nullopt);
|
||||
topRef.input.markChangedFile(
|
||||
(topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock",
|
||||
lockFlags.commitLockFile
|
||||
? std::optional<std::string>(fmt("%s: %s\n\nFlake input changes:\n\n%s",
|
||||
relPath, lockFileExists ? "Update" : "Add", diff))
|
||||
: std::nullopt);
|
||||
|
||||
/* Rewriting the lockfile changed the top-level
|
||||
repo, so we should re-read it. FIXME: we could
|
||||
also just clear the 'rev' field... */
|
||||
auto prevLockedRef = flake.lockedRef;
|
||||
FlakeCache dummyCache;
|
||||
flake = getFlake(state, topRef, lockFlags.useRegistries, dummyCache);
|
||||
/* Rewriting the lockfile changed the top-level
|
||||
repo, so we should re-read it. FIXME: we could
|
||||
also just clear the 'rev' field... */
|
||||
auto prevLockedRef = flake.lockedRef;
|
||||
FlakeCache dummyCache;
|
||||
flake = getFlake(state, topRef, lockFlags.useRegistries, dummyCache);
|
||||
|
||||
if (lockFlags.commitLockFile &&
|
||||
flake.lockedRef.input.getRev() &&
|
||||
prevLockedRef.input.getRev() != flake.lockedRef.input.getRev())
|
||||
warn("committed new revision '%s'", flake.lockedRef.input.getRev()->gitRev());
|
||||
if (lockFlags.commitLockFile &&
|
||||
flake.lockedRef.input.getRev() &&
|
||||
prevLockedRef.input.getRev() != flake.lockedRef.input.getRev())
|
||||
warn("committed new revision '%s'", flake.lockedRef.input.getRev()->gitRev());
|
||||
|
||||
/* Make sure that we picked up the change,
|
||||
i.e. the tree should usually be dirty
|
||||
now. Corner case: we could have reverted from a
|
||||
dirty to a clean tree! */
|
||||
if (flake.lockedRef.input == prevLockedRef.input
|
||||
&& !flake.lockedRef.input.isImmutable())
|
||||
throw Error("'%s' did not change after I updated its 'flake.lock' file; is 'flake.lock' under version control?", flake.originalRef);
|
||||
}
|
||||
/* Make sure that we picked up the change,
|
||||
i.e. the tree should usually be dirty
|
||||
now. Corner case: we could have reverted from a
|
||||
dirty to a clean tree! */
|
||||
if (flake.lockedRef.input == prevLockedRef.input
|
||||
&& !flake.lockedRef.input.isImmutable())
|
||||
throw Error("'%s' did not change after I updated its 'flake.lock' file; is 'flake.lock' under version control?", flake.originalRef);
|
||||
}
|
||||
} else
|
||||
throw Error("cannot write modified lock file of flake '%s' (use '--no-write-lock-file' to ignore)", topRef);
|
||||
} else
|
||||
throw Error("cannot write modified lock file of flake '%s' (use '--no-write-lock-file' to ignore)", topRef);
|
||||
} else
|
||||
warn("not writing modified lock file of flake '%s':\n%s", topRef, chomp(diff));
|
||||
}
|
||||
warn("not writing modified lock file of flake '%s':\n%s", topRef, chomp(diff));
|
||||
}
|
||||
|
||||
return LockedFlake { .flake = std::move(flake), .lockFile = std::move(newLockFile) };
|
||||
return LockedFlake { .flake = std::move(flake), .lockFile = std::move(newLockFile) };
|
||||
|
||||
} catch (Error & e) {
|
||||
e.addTrace({}, "while updating the lock file of flake '%s'", flake.lockedRef.to_string());
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
void callFlake(EvalState & state,
|
||||
|
|
|
|||
|
|
@ -132,7 +132,14 @@ std::pair<Tree, Input> Input::fetch(ref<Store> store) const
|
|||
}
|
||||
}
|
||||
|
||||
auto [tree, input] = scheme->fetch(store, *this);
|
||||
auto [tree, input] = [&]() -> std::pair<Tree, Input> {
|
||||
try {
|
||||
return scheme->fetch(store, *this);
|
||||
} catch (Error & e) {
|
||||
e.addTrace({}, "while fetching the input '%s'", to_string());
|
||||
throw;
|
||||
}
|
||||
}();
|
||||
|
||||
if (tree.actualPath == "")
|
||||
tree.actualPath = store->toRealPath(tree.storePath);
|
||||
|
|
|
|||
Loading…
Reference in a new issue