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-rw-r--r--src/build-remote/build-remote.cc40
-rw-r--r--src/libexpr/eval-cache.cc17
-rw-r--r--src/libexpr/eval-cache.hh6
-rw-r--r--src/libexpr/eval.hh3
-rw-r--r--src/libstore/build.cc13
-rw-r--r--src/nix/app.cc2
-rw-r--r--src/nix/build.cc29
-rw-r--r--src/nix/command.cc23
-rw-r--r--src/nix/flake.cc11
-rw-r--r--src/nix/installables.cc113
-rw-r--r--src/nix/installables.hh23
-rw-r--r--src/nix/log.cc13
-rw-r--r--src/nix/repl.cc7
-rw-r--r--src/nix/search.cc2
14 files changed, 185 insertions, 117 deletions
diff --git a/src/build-remote/build-remote.cc b/src/build-remote/build-remote.cc
index 3579d8fff..5247cefa6 100644
--- a/src/build-remote/build-remote.cc
+++ b/src/build-remote/build-remote.cc
@@ -103,7 +103,7 @@ static int _main(int argc, char * * argv)
drvPath = store->parseStorePath(readString(source));
auto requiredFeatures = readStrings<std::set<std::string>>(source);
- auto canBuildLocally = amWilling
+ auto canBuildLocally = amWilling
&& ( neededSystem == settings.thisSystem
|| settings.extraPlatforms.get().count(neededSystem) > 0)
&& allSupportedLocally(requiredFeatures);
@@ -170,7 +170,45 @@ static int _main(int argc, char * * argv)
if (rightType && !canBuildLocally)
std::cerr << "# postpone\n";
else
+ {
+ // build the hint template.
+ string hintstring = "derivation: %s\nrequired (system, features): (%s, %s)";
+ hintstring += "\n%s available machines:";
+ hintstring += "\n(systems, maxjobs, supportedFeatures, mandatoryFeatures)";
+
+ for (unsigned int i = 0; i < machines.size(); ++i) {
+ hintstring += "\n(%s, %s, %s, %s)";
+ }
+
+ // add the template values.
+ string drvstr;
+ if (drvPath.has_value())
+ drvstr = drvPath->to_string();
+ else
+ drvstr = "<unknown>";
+
+ auto hint = hintformat(hintstring);
+ hint
+ % drvstr
+ % neededSystem
+ % concatStringsSep<StringSet>(", ", requiredFeatures)
+ % machines.size();
+
+ for (auto & m : machines) {
+ hint % concatStringsSep<vector<string>>(", ", m.systemTypes)
+ % m.maxJobs
+ % concatStringsSep<StringSet>(", ", m.supportedFeatures)
+ % concatStringsSep<StringSet>(", ", m.mandatoryFeatures);
+ }
+
+ logError({
+ .name = "Remote build",
+ .description = "Failed to find a machine for remote build!",
+ .hint = hint
+ });
+
std::cerr << "# decline\n";
+ }
break;
}
diff --git a/src/libexpr/eval-cache.cc b/src/libexpr/eval-cache.cc
index deb32484f..46177a0a4 100644
--- a/src/libexpr/eval-cache.cc
+++ b/src/libexpr/eval-cache.cc
@@ -405,7 +405,7 @@ Value & AttrCursor::forceValue()
return v;
}
-std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(Symbol name)
+std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(Symbol name, bool forceErrors)
{
if (root->db) {
if (!cachedValue)
@@ -422,9 +422,12 @@ std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(Symbol name)
if (attr) {
if (std::get_if<missing_t>(&attr->second))
return nullptr;
- else if (std::get_if<failed_t>(&attr->second))
- throw EvalError("cached failure of attribute '%s'", getAttrPathStr(name));
- else
+ else if (std::get_if<failed_t>(&attr->second)) {
+ if (forceErrors)
+ debug("reevaluating failed cached attribute '%s'");
+ else
+ throw CachedEvalError("cached failure of attribute '%s'", getAttrPathStr(name));
+ } else
return std::make_shared<AttrCursor>(root,
std::make_pair(shared_from_this(), name), nullptr, std::move(attr));
}
@@ -469,9 +472,9 @@ std::shared_ptr<AttrCursor> AttrCursor::maybeGetAttr(std::string_view name)
return maybeGetAttr(root->state.symbols.create(name));
}
-std::shared_ptr<AttrCursor> AttrCursor::getAttr(Symbol name)
+std::shared_ptr<AttrCursor> AttrCursor::getAttr(Symbol name, bool forceErrors)
{
- auto p = maybeGetAttr(name);
+ auto p = maybeGetAttr(name, forceErrors);
if (!p)
throw Error("attribute '%s' does not exist", getAttrPathStr(name));
return p;
@@ -600,7 +603,7 @@ bool AttrCursor::isDerivation()
StorePath AttrCursor::forceDerivation()
{
- auto aDrvPath = getAttr(root->state.sDrvPath);
+ auto aDrvPath = getAttr(root->state.sDrvPath, true);
auto drvPath = root->state.store->parseStorePath(aDrvPath->getString());
if (!root->state.store->isValidPath(drvPath) && !settings.readOnlyMode) {
/* The eval cache contains 'drvPath', but the actual path has
diff --git a/src/libexpr/eval-cache.hh b/src/libexpr/eval-cache.hh
index afee85fa9..8ffffc0ed 100644
--- a/src/libexpr/eval-cache.hh
+++ b/src/libexpr/eval-cache.hh
@@ -9,6 +9,8 @@
namespace nix::eval_cache {
+MakeError(CachedEvalError, EvalError);
+
class AttrDb;
class AttrCursor;
@@ -92,11 +94,11 @@ public:
std::string getAttrPathStr(Symbol name) const;
- std::shared_ptr<AttrCursor> maybeGetAttr(Symbol name);
+ std::shared_ptr<AttrCursor> maybeGetAttr(Symbol name, bool forceErrors = false);
std::shared_ptr<AttrCursor> maybeGetAttr(std::string_view name);
- std::shared_ptr<AttrCursor> getAttr(Symbol name);
+ std::shared_ptr<AttrCursor> getAttr(Symbol name, bool forceErrors = false);
std::shared_ptr<AttrCursor> getAttr(std::string_view name);
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index 0382298b3..5855b4ef2 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -375,6 +375,9 @@ struct EvalSettings : Config
Setting<bool> traceFunctionCalls{this, false, "trace-function-calls",
"Emit log messages for each function entry and exit at the 'vomit' log level (-vvvv)."};
+
+ Setting<bool> useEvalCache{this, true, "eval-cache",
+ "Whether to use the flake evaluation cache."};
};
extern EvalSettings evalSettings;
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 233648465..b47aeff3b 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -4880,8 +4880,17 @@ void Worker::run(const Goals & _topGoals)
waitForInput();
else {
if (awake.empty() && 0 == settings.maxBuildJobs)
- throw Error("unable to start any build; either increase '--max-jobs' "
- "or enable remote builds");
+ {
+ if (getMachines().empty())
+ throw Error("unable to start any build; either increase '--max-jobs' "
+ "or enable remote builds."
+ "\nhttps://nixos.org/nix/manual/#chap-distributed-builds");
+ else
+ throw Error("unable to start any build; remote machines may not have "
+ "all required system features."
+ "\nhttps://nixos.org/nix/manual/#chap-distributed-builds");
+
+ }
assert(!awake.empty());
}
}
diff --git a/src/nix/app.cc b/src/nix/app.cc
index 3935297cf..80acbf658 100644
--- a/src/nix/app.cc
+++ b/src/nix/app.cc
@@ -8,7 +8,7 @@ namespace nix {
App Installable::toApp(EvalState & state)
{
- auto [cursor, attrPath] = getCursor(state, true);
+ auto [cursor, attrPath] = getCursor(state);
auto type = cursor->getAttr("type")->getString();
diff --git a/src/nix/build.cc b/src/nix/build.cc
index 613cc15eb..13d14a7fb 100644
--- a/src/nix/build.cc
+++ b/src/nix/build.cc
@@ -64,17 +64,24 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixProfile
if (dryRun) return;
- if (outLink != "") {
- for (size_t i = 0; i < buildables.size(); ++i) {
- for (auto & output : buildables[i].outputs)
- if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>()) {
- std::string symlink = outLink;
- if (i) symlink += fmt("-%d", i);
- if (output.first != "out") symlink += fmt("-%s", output.first);
- store2->addPermRoot(output.second, absPath(symlink), true);
- }
- }
- }
+ if (outLink != "")
+ if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>())
+ for (size_t i = 0; i < buildables.size(); ++i)
+ std::visit(overloaded {
+ [&](BuildableOpaque bo) {
+ std::string symlink = outLink;
+ if (i) symlink += fmt("-%d", i);
+ store2->addPermRoot(bo.path, absPath(symlink), true);
+ },
+ [&](BuildableFromDrv bfd) {
+ for (auto & output : bfd.outputs) {
+ std::string symlink = outLink;
+ if (i) symlink += fmt("-%d", i);
+ if (output.first != "out") symlink += fmt("-%s", output.first);
+ store2->addPermRoot(output.second, absPath(symlink), true);
+ }
+ },
+ }, buildables[i]);
updateProfile(buildables);
}
diff --git a/src/nix/command.cc b/src/nix/command.cc
index af36dda89..da32819da 100644
--- a/src/nix/command.cc
+++ b/src/nix/command.cc
@@ -128,20 +128,25 @@ void MixProfile::updateProfile(const Buildables & buildables)
{
if (!profile) return;
- std::optional<StorePath> result;
+ std::vector<StorePath> result;
for (auto & buildable : buildables) {
- for (auto & output : buildable.outputs) {
- if (result)
- throw Error("'--profile' requires that the arguments produce a single store path, but there are multiple");
- result = output.second;
- }
+ std::visit(overloaded {
+ [&](BuildableOpaque bo) {
+ result.push_back(bo.path);
+ },
+ [&](BuildableFromDrv bfd) {
+ for (auto & output : bfd.outputs) {
+ result.push_back(output.second);
+ }
+ },
+ }, buildable);
}
- if (!result)
- throw Error("'--profile' requires that the arguments produce a single store path, but there are none");
+ if (result.size() != 1)
+ throw Error("'--profile' requires that the arguments produce a single store path, but there are %d", result.size());
- updateProfile(*result);
+ updateProfile(result[0]);
}
MixDefaultProfile::MixDefaultProfile()
diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index 80d8654bc..653f8db1b 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -572,7 +572,7 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
Strings{templateName == "" ? "defaultTemplate" : templateName},
Strings(attrsPathPrefixes), lockFlags);
- auto [cursor, attrPath] = installable.getCursor(*evalState, true);
+ auto [cursor, attrPath] = installable.getCursor(*evalState);
auto templateDir = cursor->getAttr("path")->getString();
@@ -782,7 +782,6 @@ struct CmdFlakeArchive : FlakeCommand, MixJSON, MixDryRun
struct CmdFlakeShow : FlakeCommand
{
bool showLegacy = false;
- bool useEvalCache = true;
CmdFlakeShow()
{
@@ -791,12 +790,6 @@ struct CmdFlakeShow : FlakeCommand
.description = "show the contents of the 'legacyPackages' output",
.handler = {&showLegacy, true}
});
-
- addFlag({
- .longName = "no-eval-cache",
- .description = "do not use the flake evaluation cache",
- .handler = {[&]() { useEvalCache = false; }}
- });
}
std::string description() override
@@ -934,7 +927,7 @@ struct CmdFlakeShow : FlakeCommand
}
};
- auto cache = openEvalCache(*state, flake, useEvalCache);
+ auto cache = openEvalCache(*state, flake);
visit(*cache->getRoot(), {}, fmt(ANSI_BOLD "%s" ANSI_NORMAL, flake->flake.lockedRef), "");
}
diff --git a/src/nix/installables.cc b/src/nix/installables.cc
index 59b52ce95..ea152709f 100644
--- a/src/nix/installables.cc
+++ b/src/nix/installables.cc
@@ -183,8 +183,7 @@ void completeFlakeRefWithFragment(
auto flakeRef = parseFlakeRef(flakeRefS, absPath("."));
auto evalCache = openEvalCache(*evalState,
- std::make_shared<flake::LockedFlake>(lockFlake(*evalState, flakeRef, lockFlags)),
- true);
+ std::make_shared<flake::LockedFlake>(lockFlake(*evalState, flakeRef, lockFlags)));
auto root = evalCache->getRoot();
@@ -273,7 +272,7 @@ Buildable Installable::toBuildable()
}
std::vector<std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>>
-Installable::getCursors(EvalState & state, bool useEvalCache)
+Installable::getCursors(EvalState & state)
{
auto evalCache =
std::make_shared<nix::eval_cache::EvalCache>(std::nullopt, state,
@@ -282,9 +281,9 @@ Installable::getCursors(EvalState & state, bool useEvalCache)
}
std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>
-Installable::getCursor(EvalState & state, bool useEvalCache)
+Installable::getCursor(EvalState & state)
{
- auto cursors = getCursors(state, useEvalCache);
+ auto cursors = getCursors(state);
if (cursors.empty())
throw Error("cannot find flake attribute '%s'", what());
return cursors[0];
@@ -308,16 +307,15 @@ struct InstallableStorePath : Installable
for (auto & [name, output] : drv.outputs)
outputs.emplace(name, output.path(*store, drv.name));
return {
- Buildable {
+ BuildableFromDrv {
.drvPath = storePath,
.outputs = std::move(outputs)
}
};
} else {
return {
- Buildable {
- .drvPath = {},
- .outputs = {{"out", storePath}}
+ BuildableOpaque {
+ .path = storePath,
}
};
}
@@ -333,33 +331,20 @@ Buildables InstallableValue::toBuildables()
{
Buildables res;
- StorePathSet drvPaths;
+ std::map<StorePath, OutputPathMap> drvsToOutputs;
+ // Group by derivation, helps with .all in particular
for (auto & drv : toDerivations()) {
- Buildable b{.drvPath = drv.drvPath};
- drvPaths.insert(drv.drvPath);
-
auto outputName = drv.outputName;
if (outputName == "")
- throw Error("derivation '%s' lacks an 'outputName' attribute", state->store->printStorePath(*b.drvPath));
-
- b.outputs.emplace(outputName, drv.outPath);
-
- res.push_back(std::move(b));
+ throw Error("derivation '%s' lacks an 'outputName' attribute", state->store->printStorePath(drv.drvPath));
+ drvsToOutputs[drv.drvPath].insert_or_assign(outputName, drv.outPath);
}
- // Hack to recognize .all: if all drvs have the same drvPath,
- // merge the buildables.
- if (drvPaths.size() == 1) {
- Buildable b{.drvPath = *drvPaths.begin()};
- for (auto & b2 : res)
- for (auto & output : b2.outputs)
- b.outputs.insert_or_assign(output.first, output.second);
- Buildables bs;
- bs.push_back(std::move(b));
- return bs;
- } else
- return res;
+ for (auto & i : drvsToOutputs)
+ res.push_back(BuildableFromDrv { i.first, i.second });
+
+ return res;
}
struct InstallableAttrPath : InstallableValue
@@ -434,12 +419,11 @@ Value * InstallableFlake::getFlakeOutputs(EvalState & state, const flake::Locked
ref<eval_cache::EvalCache> openEvalCache(
EvalState & state,
- std::shared_ptr<flake::LockedFlake> lockedFlake,
- bool useEvalCache)
+ std::shared_ptr<flake::LockedFlake> lockedFlake)
{
auto fingerprint = lockedFlake->getFingerprint();
return make_ref<nix::eval_cache::EvalCache>(
- useEvalCache && evalSettings.pureEval
+ evalSettings.useEvalCache && evalSettings.pureEval
? std::optional { std::cref(fingerprint) }
: std::nullopt,
state,
@@ -474,10 +458,9 @@ static std::string showAttrPaths(const std::vector<std::string> & paths)
std::tuple<std::string, FlakeRef, InstallableValue::DerivationInfo> InstallableFlake::toDerivation()
{
-
auto lockedFlake = getLockedFlake();
- auto cache = openEvalCache(*state, lockedFlake, true);
+ auto cache = openEvalCache(*state, lockedFlake);
auto root = cache->getRoot();
for (auto & attrPath : getActualAttrPaths()) {
@@ -531,11 +514,10 @@ std::pair<Value *, Pos> InstallableFlake::toValue(EvalState & state)
}
std::vector<std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>>
-InstallableFlake::getCursors(EvalState & state, bool useEvalCache)
+InstallableFlake::getCursors(EvalState & state)
{
auto evalCache = openEvalCache(state,
- std::make_shared<flake::LockedFlake>(lockFlake(state, flakeRef, lockFlags)),
- useEvalCache);
+ std::make_shared<flake::LockedFlake>(lockFlake(state, flakeRef, lockFlags)));
auto root = evalCache->getRoot();
@@ -656,14 +638,17 @@ Buildables build(ref<Store> store, Realise mode,
for (auto & i : installables) {
for (auto & b : i->toBuildables()) {
- if (b.drvPath) {
- StringSet outputNames;
- for (auto & output : b.outputs)
- outputNames.insert(output.first);
- pathsToBuild.push_back({*b.drvPath, outputNames});
- } else
- for (auto & output : b.outputs)
- pathsToBuild.push_back({output.second});
+ std::visit(overloaded {
+ [&](BuildableOpaque bo) {
+ pathsToBuild.push_back({bo.path});
+ },
+ [&](BuildableFromDrv bfd) {
+ StringSet outputNames;
+ for (auto & output : bfd.outputs)
+ outputNames.insert(output.first);
+ pathsToBuild.push_back({bfd.drvPath, outputNames});
+ },
+ }, b);
buildables.push_back(std::move(b));
}
}
@@ -684,16 +669,23 @@ StorePathSet toStorePaths(ref<Store> store,
if (operateOn == OperateOn::Output) {
for (auto & b : build(store, mode, installables))
- for (auto & output : b.outputs)
- outPaths.insert(output.second);
+ std::visit(overloaded {
+ [&](BuildableOpaque bo) {
+ outPaths.insert(bo.path);
+ },
+ [&](BuildableFromDrv bfd) {
+ for (auto & output : bfd.outputs)
+ outPaths.insert(output.second);
+ },
+ }, b);
} else {
if (mode == Realise::Nothing)
settings.readOnlyMode = true;
for (auto & i : installables)
for (auto & b : i->toBuildables())
- if (b.drvPath)
- outPaths.insert(*b.drvPath);
+ if (auto bfd = std::get_if<BuildableFromDrv>(&b))
+ outPaths.insert(bfd->drvPath);
}
return outPaths;
@@ -717,20 +709,21 @@ StorePathSet toDerivations(ref<Store> store,
StorePathSet drvPaths;
for (auto & i : installables)
- for (auto & b : i->toBuildables()) {
- if (!b.drvPath) {
- if (!useDeriver)
- throw Error("argument '%s' did not evaluate to a derivation", i->what());
- for (auto & output : b.outputs) {
- auto derivers = store->queryValidDerivers(output.second);
+ for (auto & b : i->toBuildables())
+ std::visit(overloaded {
+ [&](BuildableOpaque bo) {
+ if (!useDeriver)
+ throw Error("argument '%s' did not evaluate to a derivation", i->what());
+ auto derivers = store->queryValidDerivers(bo.path);
if (derivers.empty())
throw Error("'%s' does not have a known deriver", i->what());
// FIXME: use all derivers?
drvPaths.insert(*derivers.begin());
- }
- } else
- drvPaths.insert(*b.drvPath);
- }
+ },
+ [&](BuildableFromDrv bfd) {
+ drvPaths.insert(bfd.drvPath);
+ },
+ }, b);
return drvPaths;
}
diff --git a/src/nix/installables.hh b/src/nix/installables.hh
index eb34365d4..26e87ee3a 100644
--- a/src/nix/installables.hh
+++ b/src/nix/installables.hh
@@ -14,12 +14,20 @@ struct SourceExprCommand;
namespace eval_cache { class EvalCache; class AttrCursor; }
-struct Buildable
-{
- std::optional<StorePath> drvPath;
+struct BuildableOpaque {
+ StorePath path;
+};
+
+struct BuildableFromDrv {
+ StorePath drvPath;
std::map<std::string, StorePath> outputs;
};
+typedef std::variant<
+ BuildableOpaque,
+ BuildableFromDrv
+> Buildable;
+
typedef std::vector<Buildable> Buildables;
struct App
@@ -54,10 +62,10 @@ struct Installable
}
virtual std::vector<std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>>
- getCursors(EvalState & state, bool useEvalCache);
+ getCursors(EvalState & state);
std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>
- getCursor(EvalState & state, bool useEvalCache);
+ getCursor(EvalState & state);
virtual FlakeRef nixpkgsFlakeRef() const
{
@@ -110,7 +118,7 @@ struct InstallableFlake : InstallableValue
std::pair<Value *, Pos> toValue(EvalState & state) override;
std::vector<std::pair<std::shared_ptr<eval_cache::AttrCursor>, std::string>>
- getCursors(EvalState & state, bool useEvalCache) override;
+ getCursors(EvalState & state) override;
std::shared_ptr<flake::LockedFlake> getLockedFlake() const;
@@ -119,7 +127,6 @@ struct InstallableFlake : InstallableValue
ref<eval_cache::EvalCache> openEvalCache(
EvalState & state,
- std::shared_ptr<flake::LockedFlake> lockedFlake,
- bool useEvalCache);
+ std::shared_ptr<flake::LockedFlake> lockedFlake);
}
diff --git a/src/nix/log.cc b/src/nix/log.cc
index 7e10d373a..33380dcf5 100644
--- a/src/nix/log.cc
+++ b/src/nix/log.cc
@@ -45,11 +45,14 @@ struct CmdLog : InstallableCommand
RunPager pager;
for (auto & sub : subs) {
- auto log = b.drvPath ? sub->getBuildLog(*b.drvPath) : nullptr;
- for (auto & output : b.outputs) {
- if (log) break;
- log = sub->getBuildLog(output.second);
- }
+ auto log = std::visit(overloaded {
+ [&](BuildableOpaque bo) {
+ return sub->getBuildLog(bo.path);
+ },
+ [&](BuildableFromDrv bfd) {
+ return sub->getBuildLog(bfd.drvPath);
+ },
+ }, b);
if (!log) continue;
stopProgressBar();
printInfo("got build log for '%s' from '%s'", installable->what(), sub->getUri());
diff --git a/src/nix/repl.cc b/src/nix/repl.cc
index fb9050d0d..c3c9e54a8 100644
--- a/src/nix/repl.cc
+++ b/src/nix/repl.cc
@@ -33,12 +33,17 @@ extern "C" {
#include "command.hh"
#include "finally.hh"
+#if HAVE_BOEHMGC
#define GC_INCLUDE_NEW
#include <gc/gc_cpp.h>
+#endif
namespace nix {
-struct NixRepl : gc
+struct NixRepl
+ #if HAVE_BOEHMGC
+ : gc
+ #endif
{
string curDir;
std::unique_ptr<EvalState> state;
diff --git a/src/nix/search.cc b/src/nix/search.cc
index 65a1e1818..430979274 100644
--- a/src/nix/search.cc
+++ b/src/nix/search.cc
@@ -177,7 +177,7 @@ struct CmdSearch : InstallableCommand, MixJSON
}
};
- for (auto & [cursor, prefix] : installable->getCursors(*state, true))
+ for (auto & [cursor, prefix] : installable->getCursors(*state))
visit(*cursor, parseAttrPath(*state, prefix));
if (!json && !results)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 11:32:11 +0000