BinaryOnly    bool     // cannot be rebuilt from source (has //go:binary-only-package comment)

	// Source files
	GoFiles           []string // .go source files (excluding CgoFiles, TestGoFiles, XTestGoFiles)
	CgoFiles          []string // .go source files that import "C"
	IgnoredGoFiles    []string // .go source files ignored for this build (including ignored _test.go files)

			// later package. Note that if -coverpkg is in effect
			// p.Internal.Cover.GenMeta will wind up being set for
			// all matching packages.
			if len(p.TestGoFiles)+len(p.XTestGoFiles) == 0 &&
				cfg.BuildCoverPkg == nil &&
				cfg.Experiment.CoverageRedesign {
				p.Internal.Cover.GenMeta = true
			}
		}
	}

	// Prepare build + run + print actions for all packages being tested.

		cmd := exec.Command(gorootBinGo, "list")
		if t.short {
			// In short test mode, use a format string to only
			// list packages and commands that have tests.
			const format = "{{if (or .TestGoFiles .XTestGoFiles)}}{{.ImportPath}}{{end}}"
			cmd.Args = append(cmd.Args, "-f", format)
		}
		if t.race {
			cmd.Args = append(cmd.Args, "-tags=race")
		}
		cmd.Args = append(cmd.Args, "std", "cmd")