* Don't disable fsync in production.

Dependencies

• [2] AFTXA575 * $HYDRA_DATA environment variable.
• [3] 2GK5DOU7 * Downloading closures.
• [4] 2T42QGZD * Register builds as GC roots so they don't get deleted.
• [5] IN272KZW * Automatically keep all builds in the latest successful release in

Change contents

• replacement in src/lib/Hydra/Helper/Nix.pm at line 76
  [2.774]→[2.774:830](∅→∅)
  − $db->storage->dbh->do("PRAGMA synchronous = OFF;");
  [2.774]

  [2.830]
  + $db->storage->dbh->do("PRAGMA synchronous = OFF;")

  + if defined $ENV{'HYDRA_NO_FSYNC'};