}
			// A main module can only be set to its own version.
			continue
		}

		vr, ok := r.resolvedVersion[m.Path]
		if !ok {
			// m is a viable answer to the query, but other answers may also
			// still be viable.
			filtered.pkgMods = append(filtered.pkgMods, m)
			continue
		}

		if vr.version != m.Version {

			base.Fatalf("go: modules disabled by GO111MODULE=off; see 'go help modules'")
		}
		mustUseModules = false
		return
	}

	if err := fsys.Init(base.Cwd()); err != nil {
		base.Fatal(err)
	}

	// Disable any prompting for passwords by Git.
	// Only has an effect for 2.3.0 or later, but avoiding
	// the prompt in earlier versions is just too hard.
	// If user has explicitly set GIT_TERMINAL_PROMPT=1, keep
	// prompting.

			if h2i, ok := v.Interface().(h2Transport); ok {
				t.h2transport = h2i
				return
			}
		}
	}

	if t.TLSNextProto != nil {
		// This is the documented way to disable http2 on a
		// Transport.
		return
	}
	if !t.ForceAttemptHTTP2 && (t.TLSClientConfig != nil || t.Dial != nil || t.DialContext != nil || t.hasCustomTLSDialer()) {
		// Be conservative and don't automatically enable