Some builders return absolute paths to build products already. When that
happens, the manifest writing logic shouldn't tack on another absolute
prefix.
Signed-off-by: David Anderson <danderson@tailscale.com>
By default, cmd/dist only prints the output of failed commands.
With this, you can turn all the noisy output back on.
Updates tailscale/corp#9045
Signed-off-by: David Anderson <danderson@tailscale.com>
The helper suppresses output if the command runs successfully. If the
command fails, it dumps the buffered output to stdout before returning
the error. This means the happy path isn't swamped by debug noise or
xcode being intensely verbose about what kind of day it's having,
but you still get debug output when something goes wrong.
Updates tailscale/corp#9045
Signed-off-by: David Anderson <danderson@tailscale.com>
