Use latest nixUnstable

Dependencies

• [2] XCDTFZUY hydra-queue-runner: Fix build
• [3] 34UH6B6L Build against the bleeding edge of Nix
• [4] X6FOUYFJ int2String -> std::to_string
• [5] 7DEMMXE5 Bump Nix
• [6] 5CNQUQ77 Bump Nix
• [7] 6K5PBUUN Use buildEnv to combine Hydra's Perl dependencies
• [8] YR2IM6Y5 Temporarily disable machines after a connection failure
• [9] FITVNQ2S Keep track of the time we spend copying to/from build machines
• [10] IE2PRAQU hydra-queue-runner: Send build notifications
• [11] FCTX433O Add buildStarted plugin hook
• [12] IJCXGTEC Bump Nix dependency
• [13] GS4BE6TB Asynchronously compress build logs
• [14] OKEMZJLS Bump Nix
• [15] NTEDD7T4 Provide a plugin hook for when build steps finish
• [16] BYVRA54Q Temporarily disable machines on any exception, not just connection failures
• [17] PKTKSVTL Bump Nix
• [18] 4YCF3KBG Concurrent hydra-evaluator
• [19] VZKB5CIE Workaround for RemoteStore not supporting cmdBuildDerivation yet
• [*] T4LLYESZ * Nix expression for building Hydra.
• [*] DODOGD7M Send queue runner stats to statsd
• [*] 5AIYUMTB Basic remote building
• [*] 24BMQDZA Start of single-process hydra-queue-runner

Change contents

• replacement in release.nix at line 45
  [3.21]→[3.21:76](∅→∅)
  − lib.overrideDerivation (aws-sdk-cpp.override {
  [3.21]

  [3.76]
  + aws-sdk-cpp.override {
• replacement in release.nix at line 48
  [3.143]→[3.143:428](∅→∅)
  − }) (attrs: {

  − src = fetchFromGitHub {

  − owner = "edolstra";

  − repo = "aws-sdk-cpp";

  − rev = "d1e2479f79c24e2a1df8a3f3ef3278a1c6383b1e";

  − sha256 = "1vhgsxkhpai9a7dk38q4r239l6dsz2jvl8hii24c194lsga3g84h";

  − };

  − });
  [3.143]

  [3.428]
  + };
• edit in release.nix at line 50
  [3.429]

  [3.429]
  + /*
• edit in release.nix at line 63
  [3.1016]

  [22.409]
  + */

  + nix = nixUnstable;
• replacement in src/hydra-queue-runner/build-remote.cc at line 187
  [4.1048]→[4.1048:1082](∅→∅)
  − child.pid.wait(true);
  [4.1048]

  [4.1082]
  + child.pid.wait();
• replacement in src/hydra-queue-runner/build-remote.cc at line 431
  [2.675]→[4.9180:9210](∅→∅),[4.9180]→[4.9180:9210](∅→∅)
  − child.pid.wait(true);
  [2.675]

  [4.329]
  + child.pid.wait();
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 462
  [4.2388]→[4.2388:2426](∅→∅)
  − int res = pid.wait(true);
  [4.2388]

  [4.2426]
  + int res = pid.wait();
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 524
  [4.2300]→[4.2300:2338](∅→∅)
  − int res = pid.wait(true);
  [4.2300]

  [4.2338]
  + int res = pid.wait();