mirror of
https://github.com/NixOS/nix.git
synced 2025-11-13 14:02:42 +01:00
Improve error formatting
Changes:
* The divider lines are gone. These were in practice a bit confusing,
in particular with --show-trace or --keep-going, since then there
were multiple lines, suggesting a start/end which wasn't the case.
* Instead, multi-line error messages are now indented to align with
the prefix (e.g. "error: ").
* The 'description' field is gone since we weren't really using it.
* 'hint' is renamed to 'msg' since it really wasn't a hint.
* The error is now printed *before* the location info.
* The 'name' field is no longer printed since most of the time it
wasn't very useful since it was just the name of the exception (like
EvalError). Ideally in the future this would be a unique, easily
googleable error ID (like rustc).
* "trace:" is now just "…". This assumes error contexts start with
something like "while doing X".
Example before:
error: --- AssertionError ---------------------------------------------------------------------------------------- nix
at: (7:7) in file: /home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/default.nix
6|
7| x = assert false; 1;
| ^
8|
assertion 'false' failed
----------------------------------------------------- show-trace -----------------------------------------------------
trace: while evaluating the attribute 'x' of the derivation 'hello-2.10'
at: (192:11) in file: /home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/make-derivation.nix
191| // (lib.optionalAttrs (!(attrs ? name) && attrs ? pname && attrs ? version)) {
192| name = "${attrs.pname}-${attrs.version}";
| ^
193| } // (lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix && (attrs ? name || (attrs ? pname && attrs ? version)))) {
Example after:
error: assertion 'false' failed
at: (7:7) in file: /home/eelco/Dev/nixpkgs/pkgs/applications/misc/hello/default.nix
6|
7| x = assert false; 1;
| ^
8|
… while evaluating the attribute 'x' of the derivation 'hello-2.10'
at: (192:11) in file: /home/eelco/Dev/nixpkgs/pkgs/stdenv/generic/make-derivation.nix
191| // (lib.optionalAttrs (!(attrs ? name) && attrs ? pname && attrs ? version)) {
192| name = "${attrs.pname}-${attrs.version}";
| ^
193| } // (lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform && !dontAddHostSuffix && (attrs ? name || (attrs ? pname && attrs ? version)))) {
This commit is contained in:
Eelco Dolstra
parent
259100332f
commit
8d4268d190
31 changed files with 249 additions and 422 deletions
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@ -87,8 +87,8 @@ void handleDiffHook(
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printError(chomp(diffRes.second));
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} catch (Error & error) {
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ErrorInfo ei = error.info();
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ei.hint = hintfmt("diff hook execution failed: %s",
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(error.info().hint.has_value() ? error.info().hint->str() : ""));
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// FIXME: wrap errors.
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ei.msg = hintfmt("diff hook execution failed: %s", ei.msg.str());
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logError(ei);
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}
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}
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@ -439,12 +439,9 @@ void DerivationGoal::repairClosure()
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/* Check each path (slow!). */
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for (auto & i : outputClosure) {
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if (worker.pathContentsGood(i)) continue;
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logError({
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.name = "Corrupt path in closure",
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.hint = hintfmt(
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"found corrupted or missing path '%s' in the output closure of '%s'",
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worker.store.printStorePath(i), worker.store.printStorePath(drvPath))
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});
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printError(
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"found corrupted or missing path '%s' in the output closure of '%s'",
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worker.store.printStorePath(i), worker.store.printStorePath(drvPath));
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auto drvPath2 = outputsToDrv.find(i);
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if (drvPath2 == outputsToDrv.end())
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addWaitee(upcast_goal(worker.makeSubstitutionGoal(i, Repair)));
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@ -877,9 +874,12 @@ void DerivationGoal::buildDone()
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statusToString(status));
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if (!logger->isVerbose() && !logTail.empty()) {
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msg += (format("; last %d log lines:") % logTail.size()).str();
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for (auto & line : logTail)
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msg += "\n " + line;
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msg += fmt(";\nlast %d log lines:\n", logTail.size());
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for (auto & line : logTail) {
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msg += "> ";
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msg += line;
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msg += "\n";
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}
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}
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if (diskFull)
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@ -1055,12 +1055,9 @@ HookReply DerivationGoal::tryBuildHook()
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} catch (SysError & e) {
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if (e.errNo == EPIPE) {
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logError({
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.name = "Build hook died",
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.hint = hintfmt(
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"build hook died unexpectedly: %s",
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chomp(drainFD(worker.hook->fromHook.readSide.get())))
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});
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printError(
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"build hook died unexpectedly: %s",
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chomp(drainFD(worker.hook->fromHook.readSide.get())));
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worker.hook = 0;
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return rpDecline;
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} else
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@ -3068,10 +3065,7 @@ void DerivationGoal::registerOutputs()
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auto rewriteOutput = [&]() {
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/* Apply hash rewriting if necessary. */
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if (!outputRewrites.empty()) {
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logWarning({
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.name = "Rewriting hashes",
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.hint = hintfmt("rewriting hashes in '%1%'; cross fingers", actualPath),
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});
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warn("rewriting hashes in '%1%'; cross fingers", actualPath);
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/* FIXME: this is in-memory. */
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StringSink sink;
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@ -3359,10 +3353,7 @@ void DerivationGoal::registerOutputs()
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if (settings.enforceDeterminism)
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throw NotDeterministic(hint);
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logError({
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.name = "Output determinism error",
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.hint = hint
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});
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printError(hint);
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curRound = nrRounds; // we know enough, bail out early
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}
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@ -146,11 +146,8 @@ void SubstitutionGoal::tryNext()
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&& !sub->isTrusted
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&& !info->checkSignatures(worker.store, worker.store.getPublicKeys()))
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{
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logWarning({
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.name = "Invalid path signature",
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.hint = hintfmt("substituter '%s' does not have a valid signature for path '%s'",
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sub->getUri(), worker.store.printStorePath(storePath))
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});
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warn("substituter '%s' does not have a valid signature for path '%s'",
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sub->getUri(), worker.store.printStorePath(storePath));
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tryNext();
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return;
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}
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@ -454,10 +454,7 @@ bool Worker::pathContentsGood(const StorePath & path)
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}
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pathContentsGoodCache.insert_or_assign(path, res);
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if (!res)
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logError({
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.name = "Corrupted path",
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.hint = hintfmt("path '%s' is corrupted or missing!", store.printStorePath(path))
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});
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printError("path '%s' is corrupted or missing!", store.printStorePath(path));
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return res;
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}
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@ -22,10 +22,7 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
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srcFiles = readDirectory(srcDir);
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} catch (SysError & e) {
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if (e.errNo == ENOTDIR) {
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logWarning({
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.name = "Create links - directory",
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.hint = hintfmt("not including '%s' in the user environment because it's not a directory", srcDir)
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});
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warn("not including '%s' in the user environment because it's not a directory", srcDir);
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return;
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}
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throw;
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@ -44,10 +41,7 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
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throw SysError("getting status of '%1%'", srcFile);
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} catch (SysError & e) {
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if (e.errNo == ENOENT || e.errNo == ENOTDIR) {
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logWarning({
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.name = "Create links - skipping symlink",
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.hint = hintfmt("skipping dangling symlink '%s'", dstFile)
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});
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warn("skipping dangling symlink '%s'", dstFile);
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continue;
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}
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throw;
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@ -632,11 +632,7 @@ struct curlFileTransfer : public FileTransfer
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workerThreadMain();
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} catch (nix::Interrupted & e) {
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} catch (std::exception & e) {
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logError({
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.name = "File transfer",
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.hint = hintfmt("unexpected error in download thread: %s",
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e.what())
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});
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printError("unexpected error in download thread: %s", e.what());
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}
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{
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@ -852,11 +848,10 @@ FileTransferError::FileTransferError(FileTransfer::Error error, std::shared_ptr<
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// FIXME: Due to https://github.com/NixOS/nix/issues/3841 we don't know how
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// to print different messages for different verbosity levels. For now
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// we add some heuristics for detecting when we want to show the response.
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if (response && (response->size() < 1024 || response->find("<html>") != string::npos)) {
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err.hint = hintfmt("%1%\n\nresponse body:\n\n%2%", normaltxt(hf.str()), *response);
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} else {
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err.hint = hf;
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}
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if (response && (response->size() < 1024 || response->find("<html>") != string::npos))
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err.msg = hintfmt("%1%\n\nresponse body:\n\n%2%", normaltxt(hf.str()), *response);
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else
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err.msg = hf;
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}
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bool isUri(const string & s)
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@ -150,12 +150,7 @@ LocalStore::LocalStore(const Params & params)
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struct group * gr = getgrnam(settings.buildUsersGroup.get().c_str());
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if (!gr)
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logError({
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.name = "'build-users-group' not found",
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.hint = hintfmt(
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"warning: the group '%1%' specified in 'build-users-group' does not exist",
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settings.buildUsersGroup)
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});
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printError("warning: the group '%1%' specified in 'build-users-group' does not exist", settings.buildUsersGroup);
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else {
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struct stat st;
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if (stat(realStoreDir.c_str(), &st))
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@ -1403,12 +1398,8 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
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Path linkPath = linksDir + "/" + link.name;
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string hash = hashPath(htSHA256, linkPath).first.to_string(Base32, false);
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if (hash != link.name) {
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logError({
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.name = "Invalid hash",
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.hint = hintfmt(
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"link '%s' was modified! expected hash '%s', got '%s'",
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linkPath, link.name, hash)
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});
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printError("link '%s' was modified! expected hash '%s', got '%s'",
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linkPath, link.name, hash);
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if (repair) {
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if (unlink(linkPath.c_str()) == 0)
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printInfo("removed link '%s'", linkPath);
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@ -1441,11 +1432,8 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
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auto current = hashSink->finish();
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if (info->narHash != nullHash && info->narHash != current.first) {
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logError({
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.name = "Invalid hash - path modified",
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.hint = hintfmt("path '%s' was modified! expected hash '%s', got '%s'",
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printStorePath(i), info->narHash.to_string(Base32, true), current.first.to_string(Base32, true))
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});
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printError("path '%s' was modified! expected hash '%s', got '%s'",
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printStorePath(i), info->narHash.to_string(Base32, true), current.first.to_string(Base32, true));
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if (repair) repairPath(i); else errors = true;
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} else {
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@ -1496,10 +1484,7 @@ void LocalStore::verifyPath(const Path & pathS, const StringSet & store,
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if (!done.insert(pathS).second) return;
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if (!isStorePath(pathS)) {
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logError({
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.name = "Nix path not found",
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.hint = hintfmt("path '%s' is not in the Nix store", pathS)
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});
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printError("path '%s' is not in the Nix store", pathS);
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return;
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}
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@ -1522,10 +1507,7 @@ void LocalStore::verifyPath(const Path & pathS, const StringSet & store,
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auto state(_state.lock());
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invalidatePath(*state, path);
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} else {
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logError({
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.name = "Missing path with referrers",
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.hint = hintfmt("path '%s' disappeared, but it still has valid referrers!", pathS)
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});
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printError("path '%s' disappeared, but it still has valid referrers!", pathS);
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if (repair)
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try {
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repairPath(path);
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@ -126,16 +126,13 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
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NixOS (example: $fontconfig/var/cache being modified). Skip
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those files. FIXME: check the modification time. */
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if (S_ISREG(st.st_mode) && (st.st_mode & S_IWUSR)) {
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logWarning({
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.name = "Suspicious file",
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.hint = hintfmt("skipping suspicious writable file '%1%'", path)
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});
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warn("skipping suspicious writable file '%1%'", path);
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return;
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}
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/* This can still happen on top-level files. */
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if (st.st_nlink > 1 && inodeHash.count(st.st_ino)) {
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debug(format("'%1%' is already linked, with %2% other file(s)") % path % (st.st_nlink - 2));
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debug("'%s' is already linked, with %d other file(s)", path, st.st_nlink - 2);
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return;
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}
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@ -191,10 +188,7 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
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}
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if (st.st_size != stLink.st_size) {
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logWarning({
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.name = "Corrupted link",
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.hint = hintfmt("removing corrupted link '%1%'", linkPath)
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});
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warn("removing corrupted link '%s'", linkPath);
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unlink(linkPath.c_str());
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goto retry;
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}
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@ -229,10 +223,7 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
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/* Atomically replace the old file with the new hard link. */
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if (rename(tempLink.c_str(), path.c_str()) == -1) {
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if (unlink(tempLink.c_str()) == -1)
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logError({
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.name = "Unlink error",
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.hint = hintfmt("unable to unlink '%1%'", tempLink)
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});
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printError("unable to unlink '%1%'", tempLink);
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if (errno == EMLINK) {
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/* Some filesystems generate too many links on the rename,
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rather than on the original link. (Probably it
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@ -211,7 +211,7 @@ void handleSQLiteBusy(const SQLiteBusy & e)
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lastWarned = now;
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logWarning({
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.name = "Sqlite busy",
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.hint = hintfmt(e.what())
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.msg = hintfmt(e.what())
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});
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}
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