diff --git a/src/cmd/cgo/internal/testcarchive/carchive_test.go b/src/cmd/cgo/internal/testcarchive/carchive_test.go
index 155eca9a73b..c0ad79f2314 100644
--- a/src/cmd/cgo/internal/testcarchive/carchive_test.go
+++ b/src/cmd/cgo/internal/testcarchive/carchive_test.go
@@ -58,7 +58,7 @@ func TestMain(m *testing.M) {
 }
 
 func testMain(m *testing.M) int {
-	if testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
+	if testing.Short() && testenv.Builder() == "" {
 		globalSkip = func(t testing.TB) { t.Skip("short mode and $GO_BUILDER_NAME not set") }
 		return m.Run()
 	}
diff --git a/src/cmd/cgo/internal/testcshared/cshared_test.go b/src/cmd/cgo/internal/testcshared/cshared_test.go
index 096959562c0..2c4d33f599f 100644
--- a/src/cmd/cgo/internal/testcshared/cshared_test.go
+++ b/src/cmd/cgo/internal/testcshared/cshared_test.go
@@ -44,7 +44,7 @@ func TestMain(m *testing.M) {
 func testMain(m *testing.M) int {
 	log.SetFlags(log.Lshortfile)
 	flag.Parse()
-	if testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
+	if testing.Short() && testenv.Builder() == "" {
 		globalSkip = func(t *testing.T) { t.Skip("short mode and $GO_BUILDER_NAME not set") }
 		return m.Run()
 	}
diff --git a/src/cmd/cgo/internal/testplugin/plugin_test.go b/src/cmd/cgo/internal/testplugin/plugin_test.go
index 5bff81092ca..2afb542ec4f 100644
--- a/src/cmd/cgo/internal/testplugin/plugin_test.go
+++ b/src/cmd/cgo/internal/testplugin/plugin_test.go
@@ -46,7 +46,7 @@ func prettyPrintf(format string, args ...interface{}) {
 }
 
 func testMain(m *testing.M) int {
-	if testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
+	if testing.Short() && testenv.Builder() == "" {
 		globalSkip = func(t *testing.T) { t.Skip("short mode and $GO_BUILDER_NAME not set") }
 		return m.Run()
 	}
diff --git a/src/cmd/cgo/internal/testshared/shared_test.go b/src/cmd/cgo/internal/testshared/shared_test.go
index e9274603761..3d401b604eb 100644
--- a/src/cmd/cgo/internal/testshared/shared_test.go
+++ b/src/cmd/cgo/internal/testshared/shared_test.go
@@ -96,7 +96,7 @@ func goCmd(t *testing.T, args ...string) string {
 
 // TestMain calls testMain so that the latter can use defer (TestMain exits with os.Exit).
 func testMain(m *testing.M) (int, error) {
-	if testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
+	if testing.Short() && testenv.Builder() == "" {
 		globalSkip = func(t testing.TB) { t.Skip("short mode and $GO_BUILDER_NAME not set") }
 		return m.Run(), nil
 	}
@@ -554,7 +554,7 @@ func checkPIE(t *testing.T, name string) {
 }
 
 func TestTrivialPIE(t *testing.T) {
-	if strings.HasSuffix(os.Getenv("GO_BUILDER_NAME"), "-alpine") {
+	if strings.Contains(testenv.Builder(), "-alpine") {
 		t.Skip("skipping on alpine until issue #54354 resolved")
 	}
 	globalSkip(t)
diff --git a/src/cmd/link/link_test.go b/src/cmd/link/link_test.go
index a87d452ed39..0125ba8e0f5 100644
--- a/src/cmd/link/link_test.go
+++ b/src/cmd/link/link_test.go
@@ -280,7 +280,7 @@ func TestBuildForTvOS(t *testing.T) {
 	if runtime.GOOS != "darwin" {
 		t.Skip("skipping on non-darwin platform")
 	}
-	if testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
+	if testing.Short() && testenv.Builder() == "" {
 		t.Skip("skipping in -short mode with $GO_BUILDER_NAME empty")
 	}
 	if err := testenv.Command(t, "xcrun", "--help").Run(); err != nil {
diff --git a/src/syscall/getdirentries_test.go b/src/syscall/getdirentries_test.go
index b5361ddaef7..f879e2a5390 100644
--- a/src/syscall/getdirentries_test.go
+++ b/src/syscall/getdirentries_test.go
@@ -8,6 +8,7 @@ package syscall_test
 
 import (
 	"fmt"
+	"internal/testenv"
 	"os"
 	"path/filepath"
 	"slices"
@@ -24,7 +25,7 @@ func TestGetdirentries(t *testing.T) {
 	}
 }
 func testGetdirentries(t *testing.T, count int) {
-	if count > 100 && testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
+	if count > 100 && testing.Short() && testenv.Builder() == "" {
 		t.Skip("skipping in -short mode")
 	}
 	d := t.TempDir()