Only pass the first value of each input in the inputs argument

Dependencies

• [2] FHXU6346 hydra-eval-jobs: Pass all inputs as 'inputs' arg.
• [3] 7GKAIP3V Fix build and handling of string inputs starting with a dash
• [*] 4N5APGRG * Start of a helper tool to evaluate job expressions efficiently.

Change contents

• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 260
  [2.164]→[2.164:321](∅→∅)
  − Value * inputAttr = state.allocAttr(*inputsSet, inputName);

  − state.mkList(*inputAttr, i.second.size());

  − int altIndex = 0;
  [2.164]

  [3.1469]
  + bool first = true;
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 268
  [2.372]→[2.372:427](∅→∅)
  − inputAttr->list.elems[altIndex++] = v;
  [2.372]

  [3.1820]
  + if (first) {

  + inputsSet->attrs->push_back(Attr(inputName, *v));

  + first = false;

  + }