Set $NIX_PREFETCH_GIT_DEEP_CLONE.

Dependencies

• [2] RR7O4KFU Set $NIX_PREFETCH_SVN_LEAVE_DOT_SVN to 1.
• [*] OOQ2D3KC * Refactoring: move fetchInput out of hydra_scheduler into a separate
• [*] VN2SV3G2 Ask `nix-prefetch-git' to leave `.git' in the output.

Change contents

• edit in src/lib/Hydra/Helper/AddBuilds.pm at line 308
  [2.160]

  [5.209]
  +

  + # Ask for a "deep clone" to allow "git describe" and similar

  + # tools to work. See

  + # http://thread.gmane.org/gmane.linux.distributions.nixos/3569

  + # for a discussion.

  + $ENV{"NIX_PREFETCH_GIT_DEEP_CLONE"} = "1";