hydra-eval-jobs: Fix build

Dependencies

• [2] M5BEPXTE Tweak debug output
• [3] DKJFD6JN Process Nix API changes
• [4] AEKIREIH * Updated hydra_eval_jobs for the new evaluator.
• [5] FTPCV25M Store aggregate members in the database
• [6] YNGIYQRF hydra-eval-jobs: Don't keep track of used inputs
• [7] 4LWGZL33
• [8] L4LBF7UF Handle derivations without a system attribute
• [9] JTHWA6AM Rename aggregate members to constituents
• [10] 3PNG7NIB Remove trailing whitespace
• [11] 7GKAIP3V Fix build and handling of string inputs starting with a dash
• [12] IMQRX4MP hydra-eval-jobs: Use JSON instead of XML
• [13] 4CELXP7P Remove the longDescription field
• [14] 77VF5TC6 * For ease of use during debugging, don't require --gc-roots-dir.
• [15] I2HYJBML Debug tweak
• [16] 7YCFGMZB * Report evaluation errors per job, and don't bail out if a job fails
• [17] HVXL2XUZ
• [18] POPU2ATH * hydra_scheduler: use eval-jobs.
• [19] WUMCRXFX Don't ignore assertion failures in getDerivation()
• [20] D6VR5FYG * Fix hydra_eval_jobs.
• [21] A63IHCMX * Register GC roots properly.
• [22] 4N5APGRG * Start of a helper tool to evaluate job expressions efficiently.
• [23] YGRLM2SK * Export all relevant info about the derivation.
• [24] VTNP5KDO * Don't catch all errors. Some errors mess up the connection with the

Change contents

• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 11
  [4.45]→[4.0:28](∅→∅)
  − #include "value-to-json.hh"
  [4.45]

  [4.0]
  + #include "json.hh"
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 120
  [4.14]→[4.435:504](∅→∅),[4.124]→[4.435:504](∅→∅)
  − top.attr(attrPath);

  − JSONObject res(top.str);
  [4.14]

  [4.504]
  + auto res = top.object(attrPath);
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 135
  [4.156]→[4.156:225](∅→∅)
  − if (a != v.attrs->end() && state.forceBool(*a->value)) {
  [4.156]

  [4.71]
  + if (a != v.attrs->end() && state.forceBool(*a->value, *a->pos)) {
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 153
  [4.278]→[4.0:36](∅→∅)
  − if (gcRootsDir != "") {
  [4.278]

  [4.36]
  + auto localStore = state.store.dynamic_pointer_cast<LocalFSStore>();

  + if (gcRootsDir != "" && localStore) {
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 156
  [4.104]→[3.0:87](∅→∅)
  − if (!pathExists(root)) state.store->addPermRoot(drvPath, root, false);
  [4.104]

  [4.178]
  + if (!pathExists(root)) localStore->addPermRoot(drvPath, root, false);
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 159
  [4.805]→[4.1334:1405](∅→∅)
  − res.attr("outputs");

  − JSONObject res2(res.str);
  [4.805]

  [4.1405]
  + auto res2 = res.object("outputs");
• edit in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 164
  [4.30]→[4.30:64](∅→∅)
  − top.str << std::endl;
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 199
  [2.10]→[4.1727:1788](∅→∅),[4.30]→[4.1727:1788](∅→∅)
  − top.attr(attrPath);

  − JSONObject res(top.str);
  [2.10]

  [4.1788]
  + auto res = top.object(attrPath);
• edit in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 202
  [2.21]→[4.65:95](∅→∅),[4.1824]→[4.65:95](∅→∅)
  − top.str << std::endl;
• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 282
  [4.1022]→[4.1850:1886](∅→∅)
  − JSONObject json(std::cout);
  [4.1022]

  [4.1886]
  + JSONObject json(std::cout, true);