build: go 1.24

We were running behind and there were quite some deprecations to update.
This was mostly in the upstream copy/pasta package but seems quite
minimal.

vendor/gotest.tools/v3/internal/source/bazel.go

@@ -0,0 +1,51 @@
+package source
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// These Bazel env vars are documented here:
+// https://bazel.build/reference/test-encyclopedia
+
+// Signifies test executable is being driven by `bazel test`.
+//
+// Due to Bazel's compilation and sandboxing strategy,
+// some care is required to handle resolving the original *.go source file.
+var inBazelTest = os.Getenv("BAZEL_TEST") == "1"
+
+// The name of the target being tested (ex: //some_package:some_package_test)
+var bazelTestTarget = os.Getenv("TEST_TARGET")
+
+// Absolute path to the base of the runfiles tree
+var bazelTestSrcdir = os.Getenv("TEST_SRCDIR")
+
+// The local repository's workspace name (ex: __main__)
+var bazelTestWorkspace = os.Getenv("TEST_WORKSPACE")
+
+func bazelSourcePath(filename string) (string, error) {
+	// Use the env vars to resolve the test source files,
+	// which must be provided as test data in the respective go_test target.
+	filename = filepath.Join(bazelTestSrcdir, bazelTestWorkspace, filename)
+
+	_, err := os.Stat(filename)
+	if os.IsNotExist(err) {
+		return "", fmt.Errorf(bazelMissingSourceMsg, filename, bazelTestTarget)
+	}
+	return filename, nil
+}
+
+var bazelMissingSourceMsg = `
+the test source file does not exist: %s
+It appears that you are running this test under Bazel (target: %s).
+Check that your test source files are added as test data in your go_test targets.
+
+Example:
+    go_test(
+        name = "your_package_test",
+        srcs = ["your_test.go"],
+        deps = ["@tools_gotest_v3//assert"],
+        data = glob(["*_test.go"])
+    )"
+`

vendor/gotest.tools/v3/internal/source/source.go

@@ -10,6 +10,7 @@ import (
 	"go/parser"
 	"go/token"
 	"os"
+	"path/filepath"
 	"runtime"
 )
 
@@ -35,6 +36,19 @@ func CallExprArgs(stackIndex int) ([]ast.Expr, error) {
 	}
 	debug("call stack position: %s:%d", filename, line)
 
+	// Normally, `go` will compile programs with absolute paths in
+	// the debug metadata. However, in the name of reproducibility,
+	// Bazel uses a compilation strategy that results in relative paths
+	// (otherwise, since Bazel uses a random tmp dir for compile and sandboxing,
+	// the resulting binaries would change across compiles/test runs).
+	if inBazelTest && !filepath.IsAbs(filename) {
+		var err error
+		filename, err = bazelSourcePath(filename)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	fileset := token.NewFileSet()
 	astFile, err := parser.ParseFile(fileset, filename, nil, parser.AllErrors)
 	if err != nil {
@@ -58,7 +72,7 @@ func getNodeAtLine(fileset *token.FileSet, astFile ast.Node, lineNum int) (ast.N
 			return node, err
 		}
 	}
-	return nil, nil
+	return nil, errors.New("failed to find expression")
 }
 
 func scanToLine(fileset *token.FileSet, node ast.Node, lineNum int) ast.Node {
@@ -78,11 +92,8 @@ func scanToLine(fileset *token.FileSet, node ast.Node, lineNum int) ast.Node {
 
 func getCallExprArgs(fileset *token.FileSet, astFile ast.Node, line int) ([]ast.Expr, error) {
 	node, err := getNodeAtLine(fileset, astFile, line)
-	switch {
-	case err != nil:
+	if err != nil {
 		return nil, err
-	case node == nil:
-		return nil, fmt.Errorf("failed to find an expression")
 	}
 
 	debug("found node: %s", debugFormatNode{node})
@@ -90,7 +101,7 @@ func getCallExprArgs(fileset *token.FileSet, astFile ast.Node, line int) ([]ast.
 	visitor := &callExprVisitor{}
 	ast.Walk(visitor, node)
 	if visitor.expr == nil {
-		return nil, errors.New("failed to find call expression")
+		return nil, errors.New("failed to find an expression")
 	}
 	debug("callExpr: %s", debugFormatNode{visitor.expr})
 	return visitor.expr.Args, nil