hydra-eval-jobs: Use function argument default values

Dependencies

• [2] HJYRK37A * Revert r27114, it seems to break stuff.
• [3] WWEGP5ET * Use default values of job function arguments if they're not
• [4] KD5237CU * eval-jobs now efficiently evaluates all Hydra jobs from a
• [5] AEKIREIH * Updated hydra_eval_jobs for the new evaluator.
• [*] 4N5APGRG * Start of a helper tool to evaluate job expressions efficiently.

Change contents

• edit in src/c/hydra-eval-jobs.cc at line 54
  [3.684]→[3.684:685](∅→∅),[3.685]→[2.0:143](∅→∅)
  −

  − if (a == argsLeft.end())

  − throw TypeError(format("job `%1%' requires an argument named `%2%'")

  − % attrPath % cur->name);
• edit in src/c/hydra-eval-jobs.cc at line 56
  [2.196]

  [3.805]
  +

  + if (a == argsLeft.end()) {

  + if (!cur->def)

  + throw TypeError(format("job `%1%' requires an argument named `%2%'")

  + % attrPath % cur->name);

  + tryJobAlts(state, doc, argsUsed, argsLeft, attrPath, fun, next, last, actualArgs);

  + return;

  + }