Doh - clear $NIX_PATH properly

Dependencies

• [2] SM5M2J3A Pass inputs to release expressions using -I
• [3] 7YCFGMZB * Report evaluation errors per job, and don't bail out if a job fails
• [4] 4N5APGRG * Start of a helper tool to evaluate job expressions efficiently.
• [5] AEKIREIH * Updated hydra_eval_jobs for the new evaluator.
• [6] 4LWGZL33
• [7] KD5237CU * eval-jobs now efficiently evaluates all Hydra jobs from a

Change contents

• edit in src/c/hydra-eval-jobs.cc at line 208
  [3.570]

  [3.570]
  + /* Prevent undeclared dependencies in the evaluation via

  + $NIX_PATH. */

  + unsetenv("NIX_PATH");

  +
• edit in src/c/hydra-eval-jobs.cc at line 216
  [2.28]→[2.28:140](∅→∅),[2.140]→[3.613:618](∅→∅),[3.2126]→[3.613:618](∅→∅),[3.2497]→[3.613:618](∅→∅),[3.613]→[3.613:618](∅→∅)
  − /* Prevent undeclared dependencies in the evaluation via

  − $HYDRA_PATH. */

  − unsetenv("HYDRA_PATH");

  −