Use nix::willBuildLocally()

Dependencies

• [2] O3NM62IZ Support multiple machines files
• [3] EJJCY263 Account steps with preferLocalBuild as a separate system type
• [4] VQISTKOP hydra-queue-runner: Use substitutes
• [5] 5AIYUMTB Basic remote building
• [6] RQUAATWB Add status dump facility
• [7] HJOEIMLR Refactor
• [8] OG3Z3QGC Namespace cleanup
• [9] MHVIT4JY Split hydra-queue-runner.cc more
• [10] SK6WHODM Support preferLocalBuild
• [11] 24BMQDZA Start of single-process hydra-queue-runner
• [12] SODOV2CM Automatically reload $NIX_REMOTE_SYSTEMS when it changes
• [13] 5N7LVAJN Keep track of requiredSystemFeatures in the machine stats

Change contents

• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 24
  [5.7892]→[5.686:687](∅→∅),[5.245]→[5.245:381](∅→∅)
  −

  − localPlatforms = {settings.thisSystem};

  − if (settings.thisSystem == "x86_64-linux")

  − localPlatforms.insert("i686-linux");
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 96
  [2.309]→[2.309:384](∅→∅)
  − parseMachines("localhost " + concatStringsSep(",", localPlatforms)
  [2.309]

  [2.384]
  + parseMachines("localhost " + settings.thisSystem
• edit in src/hydra-queue-runner/queue-monitor.cc at line 4
  [4.1279]

  [5.20115]
  + #include "misc.hh"
• replacement in src/hydra-queue-runner/queue-monitor.cc at line 362
  [3.1]→[3.1:197](∅→∅)
  − auto attr = step->drv.env.find("preferLocalBuild");

  − step->preferLocalBuild =

  − attr != step->drv.env.end() && attr->second == "1"

  − && has(localPlatforms, step->drv.platform);
  [3.1]

  [3.197]
  + step->preferLocalBuild = willBuildLocally(step->drv);
• edit in src/hydra-queue-runner/state.hh at line 261
  [5.437]→[5.4385:4386](∅→∅),[5.4385]→[5.4385:4386](∅→∅),[5.4386]→[5.438:473](∅→∅)
  −

  − nix::StringSet localPlatforms;