lib/compiler/build_runner.zig      | 418 +++++++++++++++++++++++++++-----
 lib/std/Build.zig                  |  55 -----
 lib/std/Build/Step.zig             |  73 ++++--
 lib/std/Build/Step/InstallFile.zig |   5 +-
 4 files changed, 407 insertions(+), 144 deletions(-)