Fix build

Dependencies

• [2] VUYJ47EV hydra-eval-jobs: Parallelize
• [3] 5JMO43B4 buildRemote(): Copy paths to the destination store in O(1) memory
• [4] HPXFXHFS Remove SHA-1 hash from BuildProducts
• [5] WDGARQ76 Reuse build products / metrics stored in the database
• [6] DKR2GXSA Update libpqxx usage to move away from deprecated API interactions.
• [7] QHO6IDC7 Fix build
• [8] 6NUK6AZA Fix build
• [9] PW4TLMWS Sync with latest Nix
• [10] BYVRA54Q Temporarily disable machines on any exception, not just connection failures
• [11] YSZQ3ORR Fix build
• [*] NQPGIRXX Revert "hydra-eval-jobs -> nix eval-hydra-jobs"
• [*] 5AIYUMTB Basic remote building
• [*] MHVIT4JY Split hydra-queue-runner.cc more

Change contents

• replacement in src/hydra-eval-jobs/hydra-eval-jobs.cc at line 472
  [2.14166]→[2.14166:14232](∅→∅)
  − auto h = hashDerivationModulo(*store, drv, true);
  [2.14166]

  [2.14232]
  + auto h = std::get<Hash>(hashDerivationModulo(*store, drv, true));
• replacement in src/hydra-queue-runner/build-remote.cc at line 455
  [3.1460]→[3.1460:1525](∅→∅)
  − info.narHash = Hash(readString(from), htSHA256);
  [3.1460]

  [3.1525]
  + info.narHash = Hash::parseAny(readString(from), htSHA256);
• replacement in src/hydra-queue-runner/queue-monitor.cc at line 652
  [5.1702]→[4.335:414](∅→∅)
  − product.sha256hash = Hash(row[3].as<std::string>(), htSHA256);
  [5.1702]

  [5.1782]
  + product.sha256hash = Hash::parseAny(row[3].as<std::string>(), htSHA256);