diff options
| -rw-r--r-- | src/libstore/derivations.cc | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc index bff228230..487ed47e9 100644 --- a/src/libstore/derivations.cc +++ b/src/libstore/derivations.cc @@ -387,13 +387,34 @@ bool isDerivation(const string & fileName) DerivationType BasicDerivation::type() const { - if (outputs.size() == 1 && - outputs.begin()->first == "out" && - std::holds_alternative<DerivationOutputFixed>(outputs.begin()->second.output)) - { + std::set<std::string_view> inputAddressedOutputs, fixedCAOutputs; + for (auto & i : outputs) { + std::visit(overloaded { + [&](DerivationOutputInputAddressed _) { + inputAddressedOutputs.insert(i.first); + }, + [&](DerivationOutputFixed _) { + fixedCAOutputs.insert(i.first); + }, + [&](DerivationOutputFloating _) { + throw Error("Floating CA output derivations are not yet implemented"); + }, + }, i.second.output); + } + + if (inputAddressedOutputs.empty() && fixedCAOutputs.empty()) { + throw Error("Must have at least one output"); + } else if (! inputAddressedOutputs.empty() && fixedCAOutputs.empty()) { + return DerivationType::Regular; + } else if (inputAddressedOutputs.empty() && ! fixedCAOutputs.empty()) { + if (fixedCAOutputs.size() > 1) + // FIXME: Experimental feature? + throw Error("Only one fixed output is allowed for now"); + if (*fixedCAOutputs.begin() != "out") + throw Error("Single fixed output must be named \"out\""); return DerivationType::CAFixed; } else { - return DerivationType::Regular; + throw Error("Can't mix derivation output types"); } } |