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Parse TOML timestamps (#8120)

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Currently `fromTOML` throws an exception when encountering a timestamp
since the Nix language lacks a way to represent them.

This patch changes this beaviour and makes `fromTOML` parse timestamps as
attrsets of the format

  { _type = "timestamp"; value = "1979-05-27T07:32:00Z"; }

This is guarded by an experimental feature flag to leave room for iterating on the representation.
This commit is contained in:
Andrea Bedini 2023-06-09 17:53:18 +08:00 • committed by GitHub
parent bf7dc3c7dc
commit 3c78920f73
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7 changed files with 286 additions and 4 deletions
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11
src/libutil/experimental-features.cc
View file

@ -12,7 +12,7 @@ struct ExperimentalFeatureDetails
std::string_view description;
};
constexpr std::array<ExperimentalFeatureDetails, 13> xpFeatureDetails = {{
constexpr std::array<ExperimentalFeatureDetails, 14> xpFeatureDetails = {{
{
.tag = Xp::CaDerivations,
.name = "ca-derivations",
@ -214,6 +214,13 @@ constexpr std::array<ExperimentalFeatureDetails, 13> xpFeatureDetails = {{
derivations that are themselves derivations outputs.
)",
},
{
.tag = Xp::ParseTomlTimestamps,
.name = "parse-toml-timestamps",
.description = R"(
Allow parsing of timestamps in builtins.fromTOML.
)",
},
}};
static_assert(
@ -248,7 +255,7 @@ std::string_view showExperimentalFeature(const ExperimentalFeature tag)
return xpFeatureDetails[(size_t)tag].name;
}
nlohmann::json documentExperimentalFeatures()
nlohmann::json documentExperimentalFeatures()
{
StringMap res;
for (auto & xpFeature : xpFeatureDetails)