lib/compiler/build_runner.zig       |  6 +--
 lib/std/Build/Step.zig              |  1 +
 lib/std/Build/Step/Run.zig          | 65 +++++++++++++++++++++++++++-----
 lib/std/Io/tty.zig                  |  6 +--
 lib/std/process.zig                 | 16 ++++++++
 test/standalone/empty_env/build.zig |  1 +
 6 files changed, 76 insertions(+), 19 deletions(-)