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Introduce top-level structuredAttrs field in JSON derivation format

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Makes the behavoral change of #13263 without the underlying refactor.
Hopefully this clearly safe from a perf and GC perspective, and will
make it easier to benchmark #13263.
This commit is contained in:
John Ericson 2025-06-11 15:15:00 -04:00
parent c437e27abc
commit f8c1ac9515
9 changed files with 169 additions and 21 deletions
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17
src/libstore/derivations.cc
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@ -1333,6 +1333,11 @@ nlohmann::json Derivation::toJSON(const StoreDirConfig & store) const
res["args"] = args;
res["env"] = env;
if (auto it = env.find("__json"); it != env.end()) {
res["env"].erase("__json");
res["structuredAttrs"] = nlohmann::json::parse(it->second);
}
return res;
}
@ -1396,7 +1401,17 @@ Derivation Derivation::fromJSON(
res.platform = getString(valueAt(json, "system"));
res.builder = getString(valueAt(json, "builder"));
res.args = getStringList(valueAt(json, "args"));
res.env = getStringMap(valueAt(json, "env"));
auto envJson = valueAt(json, "env");
try {
res.env = getStringMap(envJson);
} catch (Error & e) {
e.addTrace({}, "while reading key 'env'");
throw;
}
if (auto structuredAttrs = get(json, "structuredAttrs"))
res.env.insert_or_assign("__json", structuredAttrs->dump());
return res;
}