diff --git a/go.mod b/go.mod
index a6c9650..61d6eaf 100644
--- a/go.mod
+++ b/go.mod
@@ -4,8 +4,8 @@ go 1.22.0
 
 require (
 	golang.org/x/exp v0.0.0-20230809094429-853ea248256d
-	golang.org/x/mod v0.21.0
-	golang.org/x/tools v0.26.0
+	golang.org/x/mod v0.22.0
+	golang.org/x/tools v0.27.0
 )
 
-require golang.org/x/sync v0.8.0 // indirect
+require golang.org/x/sync v0.9.0 // indirect
diff --git a/go.sum b/go.sum
index 5fa9c23..bbf88c7 100644
--- a/go.sum
+++ b/go.sum
@@ -2,9 +2,9 @@ github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 golang.org/x/exp v0.0.0-20230809094429-853ea248256d h1:wu5bD43Ana/nF1ZmaLr3lW/FQeJU8CcI+Ln7yWHViXE=
 golang.org/x/exp v0.0.0-20230809094429-853ea248256d/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
-golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
-golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
-golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/tools v0.26.0 h1:v/60pFQmzmT9ExmjDv2gGIfi3OqfKoEP6I5+umXlbnQ=
-golang.org/x/tools v0.26.0/go.mod h1:TPVVj70c7JJ3WCazhD8OdXcZg/og+b9+tH/KxylGwH0=
+golang.org/x/mod v0.22.0 h1:D4nJWe9zXqHOmWqj4VMOJhvzj7bEZg4wEYa759z1pH4=
+golang.org/x/mod v0.22.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
+golang.org/x/sync v0.9.0 h1:fEo0HyrW1GIgZdpbhCRO0PkJajUS5H9IFUztCgEo2jQ=
+golang.org/x/sync v0.9.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/tools v0.27.0 h1:qEKojBykQkQ4EynWy4S8Weg69NumxKdn40Fce3uc/8o=
+golang.org/x/tools v0.27.0/go.mod h1:sUi0ZgbwW9ZPAq26Ekut+weQPR5eIM6GQLQ1Yjm1H0Q=
diff --git a/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go b/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
index 71ebbfa..2301ccf 100644
--- a/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
+++ b/vendor/golang.org/x/tools/go/analysis/unitchecker/unitchecker.go
@@ -51,7 +51,6 @@ import (
 	"golang.org/x/tools/go/analysis/internal/analysisflags"
 	"golang.org/x/tools/internal/analysisinternal"
 	"golang.org/x/tools/internal/facts"
-	"golang.org/x/tools/internal/versions"
 )
 
 // A Config describes a compilation unit to be analyzed.
@@ -257,15 +256,15 @@ func run(fset *token.FileSet, cfg *Config, analyzers []*analysis.Analyzer) ([]re
 		GoVersion: cfg.GoVersion,
 	}
 	info := &types.Info{
-		Types:      make(map[ast.Expr]types.TypeAndValue),
-		Defs:       make(map[*ast.Ident]types.Object),
-		Uses:       make(map[*ast.Ident]types.Object),
-		Implicits:  make(map[ast.Node]types.Object),
-		Instances:  make(map[*ast.Ident]types.Instance),
-		Scopes:     make(map[ast.Node]*types.Scope),
-		Selections: make(map[*ast.SelectorExpr]*types.Selection),
+		Types:        make(map[ast.Expr]types.TypeAndValue),
+		Defs:         make(map[*ast.Ident]types.Object),
+		Uses:         make(map[*ast.Ident]types.Object),
+		Implicits:    make(map[ast.Node]types.Object),
+		Instances:    make(map[*ast.Ident]types.Instance),
+		Scopes:       make(map[ast.Node]*types.Scope),
+		Selections:   make(map[*ast.SelectorExpr]*types.Selection),
+		FileVersions: make(map[*ast.File]string),
 	}
-	versions.InitFileVersions(info)
 
 	pkg, err := tc.Check(cfg.ImportPath, fset, files, info)
 	if err != nil {
diff --git a/vendor/golang.org/x/tools/go/ast/inspector/inspector.go b/vendor/golang.org/x/tools/go/ast/inspector/inspector.go
index 0e0ba4c..958cf38 100644
--- a/vendor/golang.org/x/tools/go/ast/inspector/inspector.go
+++ b/vendor/golang.org/x/tools/go/ast/inspector/inspector.go
@@ -180,7 +180,9 @@ func (in *Inspector) WithStack(types []ast.Node, f func(n ast.Node, push bool, s
 // traverse builds the table of events representing a traversal.
 func traverse(files []*ast.File) []event {
 	// Preallocate approximate number of events
-	// based on source file extent.
+	// based on source file extent of the declarations.
+	// (We use End-Pos not FileStart-FileEnd to neglect
+	// the effect of long doc comments.)
 	// This makes traverse faster by 4x (!).
 	var extent int
 	for _, f := range files {
diff --git a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go
index 137cc8d..f3ab0a2 100644
--- a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go
+++ b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go
@@ -2,22 +2,64 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package gcexportdata provides functions for locating, reading, and
-// writing export data files containing type information produced by the
-// gc compiler.  This package supports go1.7 export data format and all
-// later versions.
-//
-// Although it might seem convenient for this package to live alongside
-// go/types in the standard library, this would cause version skew
-// problems for developer tools that use it, since they must be able to
-// consume the outputs of the gc compiler both before and after a Go
-// update such as from Go 1.7 to Go 1.8.  Because this package lives in
-// golang.org/x/tools, sites can update their version of this repo some
-// time before the Go 1.8 release and rebuild and redeploy their
-// developer tools, which will then be able to consume both Go 1.7 and
-// Go 1.8 export data files, so they will work before and after the
-// Go update. (See discussion at https://golang.org/issue/15651.)
-package gcexportdata // import "golang.org/x/tools/go/gcexportdata"
+// Package gcexportdata provides functions for reading and writing
+// export data, which is a serialized description of the API of a Go
+// package including the names, kinds, types, and locations of all
+// exported declarations.
+//
+// The standard Go compiler (cmd/compile) writes an export data file
+// for each package it compiles, which it later reads when compiling
+// packages that import the earlier one. The compiler must thus
+// contain logic to both write and read export data.
+// (See the "Export" section in the cmd/compile/README file.)
+//
+// The [Read] function in this package can read files produced by the
+// compiler, producing [go/types] data structures. As a matter of
+// policy, Read supports export data files produced by only the last
+// two Go releases plus tip; see https://go.dev/issue/68898. The
+// export data files produced by the compiler contain additional
+// details related to generics, inlining, and other optimizations that
+// cannot be decoded by the [Read] function.
+//
+// In files written by the compiler, the export data is not at the
+// start of the file. Before calling Read, use [NewReader] to locate
+// the desired portion of the file.
+//
+// The [Write] function in this package encodes the exported API of a
+// Go package ([types.Package]) as a file. Such files can be later
+// decoded by Read, but cannot be consumed by the compiler.
+//
+// # Future changes
+//
+// Although Read supports the formats written by both Write and the
+// compiler, the two are quite different, and there is an open
+// proposal (https://go.dev/issue/69491) to separate these APIs.
+//
+// Under that proposal, this package would ultimately provide only the
+// Read operation for compiler export data, which must be defined in
+// this module (golang.org/x/tools), not in the standard library, to
+// avoid version skew for developer tools that need to read compiler
+// export data both before and after a Go release, such as from Go
+// 1.23 to Go 1.24. Because this package lives in the tools module,
+// clients can update their version of the module some time before the
+// Go 1.24 release and rebuild and redeploy their tools, which will
+// then be able to consume both Go 1.23 and Go 1.24 export data files,
+// so they will work before and after the Go update. (See discussion
+// at https://go.dev/issue/15651.)
+//
+// The operations to import and export [go/types] data structures
+// would be defined in the go/types package as Import and Export.
+// [Write] would (eventually) delegate to Export,
+// and [Read], when it detects a file produced by Export,
+// would delegate to Import.
+//
+// # Deprecations
+//
+// The [NewImporter] and [Find] functions are deprecated and should
+// not be used in new code. The [WriteBundle] and [ReadBundle]
+// functions are experimental, and there is an open proposal to
+// deprecate them (https://go.dev/issue/69573).
+package gcexportdata
 
 import (
 	"bufio"
@@ -100,6 +142,11 @@ func readAll(r io.Reader) ([]byte, error) {
 // Read reads export data from in, decodes it, and returns type
 // information for the package.
 //
+// Read is capable of reading export data produced by [Write] at the
+// same source code version, or by the last two Go releases (plus tip)
+// of the standard Go compiler. Reading files from older compilers may
+// produce an error.
+//
 // The package path (effectively its linker symbol prefix) is
 // specified by path, since unlike the package name, this information
 // may not be recorded in the export data.
@@ -128,14 +175,26 @@ func Read(in io.Reader, fset *token.FileSet, imports map[string]*types.Package,
 	// (from "version"). Select appropriate importer.
 	if len(data) > 0 {
 		switch data[0] {
-		case 'v', 'c', 'd': // binary, till go1.10
+		case 'v', 'c', 'd':
+			// binary, produced by cmd/compile till go1.10
 			return nil, fmt.Errorf("binary (%c) import format is no longer supported", data[0])
 
-		case 'i': // indexed, till go1.19
+		case 'i':
+			// indexed, produced by cmd/compile till go1.19,
+			// and also by [Write].
+			//
+			// If proposal #69491 is accepted, go/types
+			// serialization will be implemented by
+			// types.Export, to which Write would eventually
+			// delegate (explicitly dropping any pretence at
+			// inter-version Write-Read compatibility).
+			// This [Read] function would delegate to types.Import
+			// when it detects that the file was produced by Export.
 			_, pkg, err := gcimporter.IImportData(fset, imports, data[1:], path)
 			return pkg, err
 
-		case 'u': // unified, from go1.20
+		case 'u':
+			// unified, produced by cmd/compile since go1.20
 			_, pkg, err := gcimporter.UImportData(fset, imports, data[1:], path)
 			return pkg, err
 
diff --git a/vendor/golang.org/x/tools/go/packages/external.go b/vendor/golang.org/x/tools/go/packages/external.go
index 8f7afcb..96db9da 100644
--- a/vendor/golang.org/x/tools/go/packages/external.go
+++ b/vendor/golang.org/x/tools/go/packages/external.go
@@ -79,7 +79,7 @@ type DriverResponse struct {
 
 // driver is the type for functions that query the build system for the
 // packages named by the patterns.
-type driver func(cfg *Config, patterns ...string) (*DriverResponse, error)
+type driver func(cfg *Config, patterns []string) (*DriverResponse, error)
 
 // findExternalDriver returns the file path of a tool that supplies
 // the build system package structure, or "" if not found.
@@ -103,7 +103,7 @@ func findExternalDriver(cfg *Config) driver {
 			return nil
 		}
 	}
-	return func(cfg *Config, words ...string) (*DriverResponse, error) {
+	return func(cfg *Config, patterns []string) (*DriverResponse, error) {
 		req, err := json.Marshal(DriverRequest{
 			Mode:       cfg.Mode,
 			Env:        cfg.Env,
@@ -117,7 +117,7 @@ func findExternalDriver(cfg *Config) driver {
 
 		buf := new(bytes.Buffer)
 		stderr := new(bytes.Buffer)
-		cmd := exec.CommandContext(cfg.Context, tool, words...)
+		cmd := exec.CommandContext(cfg.Context, tool, patterns...)
 		cmd.Dir = cfg.Dir
 		// The cwd gets resolved to the real path. On Darwin, where
 		// /tmp is a symlink, this breaks anything that expects the
diff --git a/vendor/golang.org/x/tools/go/packages/golist.go b/vendor/golang.org/x/tools/go/packages/golist.go
index 1a3a5b4..76f910e 100644
--- a/vendor/golang.org/x/tools/go/packages/golist.go
+++ b/vendor/golang.org/x/tools/go/packages/golist.go
@@ -80,6 +80,12 @@ type golistState struct {
 	cfg *Config
 	ctx context.Context
 
+	runner *gocommand.Runner
+
+	// overlay is the JSON file that encodes the Config.Overlay
+	// mapping, used by 'go list -overlay=...'.
+	overlay string
+
 	envOnce    sync.Once
 	goEnvError error
 	goEnv      map[string]string
@@ -127,7 +133,10 @@ func (state *golistState) mustGetEnv() map[string]string {
 // goListDriver uses the go list command to interpret the patterns and produce
 // the build system package structure.
 // See driver for more details.
-func goListDriver(cfg *Config, patterns ...string) (_ *DriverResponse, err error) {
+//
+// overlay is the JSON file that encodes the cfg.Overlay
+// mapping, used by 'go list -overlay=...'
+func goListDriver(cfg *Config, runner *gocommand.Runner, overlay string, patterns []string) (_ *DriverResponse, err error) {
 	// Make sure that any asynchronous go commands are killed when we return.
 	parentCtx := cfg.Context
 	if parentCtx == nil {
@@ -142,13 +151,15 @@ func goListDriver(cfg *Config, patterns ...string) (_ *DriverResponse, err error
 		cfg:        cfg,
 		ctx:        ctx,
 		vendorDirs: map[string]bool{},
+		overlay:    overlay,
+		runner:     runner,
 	}
 
 	// Fill in response.Sizes asynchronously if necessary.
-	if cfg.Mode&NeedTypesSizes != 0 || cfg.Mode&NeedTypes != 0 {
+	if cfg.Mode&NeedTypesSizes != 0 || cfg.Mode&(NeedTypes|NeedTypesInfo) != 0 {
 		errCh := make(chan error)
 		go func() {
-			compiler, arch, err := getSizesForArgs(ctx, state.cfgInvocation(), cfg.gocmdRunner)
+			compiler, arch, err := getSizesForArgs(ctx, state.cfgInvocation(), runner)
 			response.dr.Compiler = compiler
 			response.dr.Arch = arch
 			errCh <- err
@@ -681,7 +692,7 @@ func (state *golistState) shouldAddFilenameFromError(p *jsonPackage) bool {
 // getGoVersion returns the effective minor version of the go command.
 func (state *golistState) getGoVersion() (int, error) {
 	state.goVersionOnce.Do(func() {
-		state.goVersion, state.goVersionError = gocommand.GoVersion(state.ctx, state.cfgInvocation(), state.cfg.gocmdRunner)
+		state.goVersion, state.goVersionError = gocommand.GoVersion(state.ctx, state.cfgInvocation(), state.runner)
 	})
 	return state.goVersion, state.goVersionError
 }
@@ -751,7 +762,7 @@ func jsonFlag(cfg *Config, goVersion int) string {
 		}
 	}
 	addFields("Name", "ImportPath", "Error") // These fields are always needed
-	if cfg.Mode&NeedFiles != 0 || cfg.Mode&NeedTypes != 0 {
+	if cfg.Mode&NeedFiles != 0 || cfg.Mode&(NeedTypes|NeedTypesInfo) != 0 {
 		addFields("Dir", "GoFiles", "IgnoredGoFiles", "IgnoredOtherFiles", "CFiles",
 			"CgoFiles", "CXXFiles", "MFiles", "HFiles", "FFiles", "SFiles",
 			"SwigFiles", "SwigCXXFiles", "SysoFiles")
@@ -759,7 +770,7 @@ func jsonFlag(cfg *Config, goVersion int) string {
 			addFields("TestGoFiles", "XTestGoFiles")
 		}
 	}
-	if cfg.Mode&NeedTypes != 0 {
+	if cfg.Mode&(NeedTypes|NeedTypesInfo) != 0 {
 		// CompiledGoFiles seems to be required for the test case TestCgoNoSyntax,
 		// even when -compiled isn't passed in.
 		// TODO(#52435): Should we make the test ask for -compiled, or automatically
@@ -840,7 +851,7 @@ func (state *golistState) cfgInvocation() gocommand.Invocation {
 		Env:        cfg.Env,
 		Logf:       cfg.Logf,
 		WorkingDir: cfg.Dir,
-		Overlay:    cfg.goListOverlayFile,
+		Overlay:    state.overlay,
 	}
 }
 
@@ -851,11 +862,8 @@ func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer,
 	inv := state.cfgInvocation()
 	inv.Verb = verb
 	inv.Args = args
-	gocmdRunner := cfg.gocmdRunner
-	if gocmdRunner == nil {
-		gocmdRunner = &gocommand.Runner{}
-	}
-	stdout, stderr, friendlyErr, err := gocmdRunner.RunRaw(cfg.Context, inv)
+
+	stdout, stderr, friendlyErr, err := state.runner.RunRaw(cfg.Context, inv)
 	if err != nil {
 		// Check for 'go' executable not being found.
 		if ee, ok := err.(*exec.Error); ok && ee.Err == exec.ErrNotFound {
@@ -879,6 +887,12 @@ func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer,
 			return nil, friendlyErr
 		}
 
+		// Return an error if 'go list' failed due to missing tools in
+		// $GOROOT/pkg/tool/$GOOS_$GOARCH (#69606).
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), `go: no such tool`) {
+			return nil, friendlyErr
+		}
+
 		// Is there an error running the C compiler in cgo? This will be reported in the "Error" field
 		// and should be suppressed by go list -e.
 		//
diff --git a/vendor/golang.org/x/tools/go/packages/packages.go b/vendor/golang.org/x/tools/go/packages/packages.go
index f227f1b..2ecc642 100644
--- a/vendor/golang.org/x/tools/go/packages/packages.go
+++ b/vendor/golang.org/x/tools/go/packages/packages.go
@@ -16,13 +16,13 @@ import (
 	"go/scanner"
 	"go/token"
 	"go/types"
-	"io"
 	"log"
 	"os"
 	"path/filepath"
 	"runtime"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"golang.org/x/sync/errgroup"
@@ -31,7 +31,6 @@ import (
 	"golang.org/x/tools/internal/gocommand"
 	"golang.org/x/tools/internal/packagesinternal"
 	"golang.org/x/tools/internal/typesinternal"
-	"golang.org/x/tools/internal/versions"
 )
 
 // A LoadMode controls the amount of detail to return when loading.
@@ -56,7 +55,7 @@ const (
 	// NeedName adds Name and PkgPath.
 	NeedName LoadMode = 1 << iota
 
-	// NeedFiles adds GoFiles and OtherFiles.
+	// NeedFiles adds GoFiles, OtherFiles, and IgnoredFiles
 	NeedFiles
 
 	// NeedCompiledGoFiles adds CompiledGoFiles.
@@ -78,7 +77,7 @@ const (
 	// NeedSyntax adds Syntax and Fset.
 	NeedSyntax
 
-	// NeedTypesInfo adds TypesInfo.
+	// NeedTypesInfo adds TypesInfo and Fset.
 	NeedTypesInfo
 
 	// NeedTypesSizes adds TypesSizes.
@@ -145,13 +144,7 @@ const (
 // A Config specifies details about how packages should be loaded.
 // The zero value is a valid configuration.
 //
-// Calls to Load do not modify this struct.
-//
-// TODO(adonovan): #67702: this is currently false: in fact,
-// calls to [Load] do not modify the public fields of this struct, but
-// may modify hidden fields, so concurrent calls to [Load] must not
-// use the same Config. But perhaps we should reestablish the
-// documented invariant.
+// Calls to [Load] do not modify this struct.
 type Config struct {
 	// Mode controls the level of information returned for each package.
 	Mode LoadMode
@@ -182,19 +175,10 @@ type Config struct {
 	//
 	Env []string
 
-	// gocmdRunner guards go command calls from concurrency errors.
-	gocmdRunner *gocommand.Runner
-
 	// BuildFlags is a list of command-line flags to be passed through to
 	// the build system's query tool.
 	BuildFlags []string
 
-	// modFile will be used for -modfile in go command invocations.
-	modFile string
-
-	// modFlag will be used for -modfile in go command invocations.
-	modFlag string
-
 	// Fset provides source position information for syntax trees and types.
 	// If Fset is nil, Load will use a new fileset, but preserve Fset's value.
 	Fset *token.FileSet
@@ -241,9 +225,13 @@ type Config struct {
 	// drivers may vary in their level of support for overlays.
 	Overlay map[string][]byte
 
-	// goListOverlayFile is the JSON file that encodes the Overlay
-	// mapping, used by 'go list -overlay=...'
-	goListOverlayFile string
+	// -- Hidden configuration fields only for use in x/tools --
+
+	// modFile will be used for -modfile in go command invocations.
+	modFile string
+
+	// modFlag will be used for -modfile in go command invocations.
+	modFlag string
 }
 
 // Load loads and returns the Go packages named by the given patterns.
@@ -334,21 +322,24 @@ func defaultDriver(cfg *Config, patterns ...string) (*DriverResponse, bool, erro
 		} else if !response.NotHandled {
 			return response, true, nil
 		}
-		// (fall through)
+		// not handled: fall through
 	}
 
 	// go list fallback
-	//
+
 	// Write overlays once, as there are many calls
 	// to 'go list' (one per chunk plus others too).
-	overlay, cleanupOverlay, err := gocommand.WriteOverlays(cfg.Overlay)
+	overlayFile, cleanupOverlay, err := gocommand.WriteOverlays(cfg.Overlay)
 	if err != nil {
 		return nil, false, err
 	}
 	defer cleanupOverlay()
-	cfg.goListOverlayFile = overlay
 
-	response, err := callDriverOnChunks(goListDriver, cfg, chunks)
+	var runner gocommand.Runner // (shared across many 'go list' calls)
+	driver := func(cfg *Config, patterns []string) (*DriverResponse, error) {
+		return goListDriver(cfg, &runner, overlayFile, patterns)
+	}
+	response, err := callDriverOnChunks(driver, cfg, chunks)
 	if err != nil {
 		return nil, false, err
 	}
@@ -386,16 +377,14 @@ func splitIntoChunks(patterns []string, argMax int) ([][]string, error) {
 
 func callDriverOnChunks(driver driver, cfg *Config, chunks [][]string) (*DriverResponse, error) {
 	if len(chunks) == 0 {
-		return driver(cfg)
+		return driver(cfg, nil)
 	}
 	responses := make([]*DriverResponse, len(chunks))
 	errNotHandled := errors.New("driver returned NotHandled")
 	var g errgroup.Group
 	for i, chunk := range chunks {
-		i := i
-		chunk := chunk
 		g.Go(func() (err error) {
-			responses[i], err = driver(cfg, chunk...)
+			responses[i], err = driver(cfg, chunk)
 			if responses[i] != nil && responses[i].NotHandled {
 				err = errNotHandled
 			}
@@ -692,18 +681,19 @@ func (p *Package) String() string { return p.ID }
 // loaderPackage augments Package with state used during the loading phase
 type loaderPackage struct {
 	*Package
-	importErrors map[string]error // maps each bad import to its error
-	loadOnce     sync.Once
-	color        uint8 // for cycle detection
-	needsrc      bool  // load from source (Mode >= LoadTypes)
-	needtypes    bool  // type information is either requested or depended on
-	initial      bool  // package was matched by a pattern
-	goVersion    int   // minor version number of go command on PATH
+	importErrors    map[string]error // maps each bad import to its error
+	preds           []*loaderPackage // packages that import this one
+	unfinishedSuccs atomic.Int32     // number of direct imports not yet loaded
+	color           uint8            // for cycle detection
+	needsrc         bool             // load from source (Mode >= LoadTypes)
+	needtypes       bool             // type information is either requested or depended on
+	initial         bool             // package was matched by a pattern
+	goVersion       int              // minor version number of go command on PATH
 }
 
 // loader holds the working state of a single call to load.
 type loader struct {
-	pkgs map[string]*loaderPackage
+	pkgs map[string]*loaderPackage // keyed by Package.ID
 	Config
 	sizes        types.Sizes // non-nil if needed by mode
 	parseCache   map[string]*parseValue
@@ -749,9 +739,6 @@ func newLoader(cfg *Config) *loader {
 	if ld.Config.Env == nil {
 		ld.Config.Env = os.Environ()
 	}
-	if ld.Config.gocmdRunner == nil {
-		ld.Config.gocmdRunner = &gocommand.Runner{}
-	}
 	if ld.Context == nil {
 		ld.Context = context.Background()
 	}
@@ -765,7 +752,7 @@ func newLoader(cfg *Config) *loader {
 	ld.requestedMode = ld.Mode
 	ld.Mode = impliedLoadMode(ld.Mode)
 
-	if ld.Mode&NeedTypes != 0 || ld.Mode&NeedSyntax != 0 {
+	if ld.Mode&(NeedSyntax|NeedTypes|NeedTypesInfo) != 0 {
 		if ld.Fset == nil {
 			ld.Fset = token.NewFileSet()
 		}
@@ -806,7 +793,7 @@ func (ld *loader) refine(response *DriverResponse) ([]*Package, error) {
 		exportDataInvalid := len(ld.Overlay) > 0 || pkg.ExportFile == "" && pkg.PkgPath != "unsafe"
 		// This package needs type information if the caller requested types and the package is
 		// either a root, or it's a non-root and the user requested dependencies ...
-		needtypes := (ld.Mode&NeedTypes|NeedTypesInfo != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0))
+		needtypes := (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0))
 		// This package needs source if the call requested source (or types info, which implies source)
 		// and the package is either a root, or itas a non- root and the user requested dependencies...
 		needsrc := ((ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0)) ||
@@ -831,9 +818,10 @@ func (ld *loader) refine(response *DriverResponse) ([]*Package, error) {
 		}
 	}
 
-	if ld.Mode&NeedImports != 0 {
-		// Materialize the import graph.
-
+	// Materialize the import graph if it is needed (NeedImports),
+	// or if we'll be using loadPackages (Need{Syntax|Types|TypesInfo}).
+	var leaves []*loaderPackage // packages with no unfinished successors
+	if ld.Mode&(NeedImports|NeedSyntax|NeedTypes|NeedTypesInfo) != 0 {
 		const (
 			white = 0 // new
 			grey  = 1 // in progress
@@ -852,63 +840,76 @@ func (ld *loader) refine(response *DriverResponse) ([]*Package, error) {
 		// dependency on a package that does. These are the only packages
 		// for which we load source code.
 		var stack []*loaderPackage
-		var visit func(lpkg *loaderPackage) bool
-		visit = func(lpkg *loaderPackage) bool {
-			switch lpkg.color {
-			case black:
-				return lpkg.needsrc
-			case grey:
+		var visit func(from, lpkg *loaderPackage) bool
+		visit = func(from, lpkg *loaderPackage) bool {
+			if lpkg.color == grey {
 				panic("internal error: grey node")
 			}
-			lpkg.color = grey
-			stack = append(stack, lpkg) // push
-			stubs := lpkg.Imports       // the structure form has only stubs with the ID in the Imports
-			lpkg.Imports = make(map[string]*Package, len(stubs))
-			for importPath, ipkg := range stubs {
-				var importErr error
-				imp := ld.pkgs[ipkg.ID]
-				if imp == nil {
-					// (includes package "C" when DisableCgo)
-					importErr = fmt.Errorf("missing package: %q", ipkg.ID)
-				} else if imp.color == grey {
-					importErr = fmt.Errorf("import cycle: %s", stack)
+			if lpkg.color == white {
+				lpkg.color = grey
+				stack = append(stack, lpkg) // push
+				stubs := lpkg.Imports       // the structure form has only stubs with the ID in the Imports
+				lpkg.Imports = make(map[string]*Package, len(stubs))
+				for importPath, ipkg := range stubs {
+					var importErr error
+					imp := ld.pkgs[ipkg.ID]
+					if imp == nil {
+						// (includes package "C" when DisableCgo)
+						importErr = fmt.Errorf("missing package: %q", ipkg.ID)
+					} else if imp.color == grey {
+						importErr = fmt.Errorf("import cycle: %s", stack)
+					}
+					if importErr != nil {
+						if lpkg.importErrors == nil {
+							lpkg.importErrors = make(map[string]error)
+						}
+						lpkg.importErrors[importPath] = importErr
+						continue
+					}
+
+					if visit(lpkg, imp) {
+						lpkg.needsrc = true
+					}
+					lpkg.Imports[importPath] = imp.Package
 				}
-				if importErr != nil {
-					if lpkg.importErrors == nil {
-						lpkg.importErrors = make(map[string]error)
+
+				// -- postorder --
+
+				// Complete type information is required for the
+				// immediate dependencies of each source package.
+				if lpkg.needsrc && ld.Mode&NeedTypes != 0 {
+					for _, ipkg := range lpkg.Imports {
+						ld.pkgs[ipkg.ID].needtypes = true
 					}
-					lpkg.importErrors[importPath] = importErr
-					continue
 				}
 
-				if visit(imp) {
-					lpkg.needsrc = true
+				// NeedTypeSizes causes TypeSizes to be set even
+				// on packages for which types aren't needed.
+				if ld.Mode&NeedTypesSizes != 0 {
+					lpkg.TypesSizes = ld.sizes
 				}
-				lpkg.Imports[importPath] = imp.Package
-			}
 
-			// Complete type information is required for the
-			// immediate dependencies of each source package.
-			if lpkg.needsrc && ld.Mode&NeedTypes != 0 {
-				for _, ipkg := range lpkg.Imports {
-					ld.pkgs[ipkg.ID].needtypes = true
+				// Add packages with no imports directly to the queue of leaves.
+				if len(lpkg.Imports) == 0 {
+					leaves = append(leaves, lpkg)
 				}
+
+				stack = stack[:len(stack)-1] // pop
+				lpkg.color = black
 			}
 
-			// NeedTypeSizes causes TypeSizes to be set even
-			// on packages for which types aren't needed.
-			if ld.Mode&NeedTypesSizes != 0 {
-				lpkg.TypesSizes = ld.sizes
+			// Add edge from predecessor.
+			if from != nil {
+				from.unfinishedSuccs.Add(+1) // incref
+				lpkg.preds = append(lpkg.preds, from)
 			}
-			stack = stack[:len(stack)-1] // pop
-			lpkg.color = black
 
 			return lpkg.needsrc
 		}
 
 		// For each initial package, create its import DAG.
 		for _, lpkg := range initial {
-			visit(lpkg)
+			visit(nil, lpkg)
 		}
 
 	} else {
@@ -921,16 +922,45 @@ func (ld *loader) refine(response *DriverResponse) ([]*Package, error) {
 
 	// Load type data and syntax if needed, starting at
 	// the initial packages (roots of the import DAG).
-	if ld.Mode&NeedTypes != 0 || ld.Mode&NeedSyntax != 0 {
-		var wg sync.WaitGroup
-		for _, lpkg := range initial {
-			wg.Add(1)
-			go func(lpkg *loaderPackage) {
-				ld.loadRecursive(lpkg)
-				wg.Done()
-			}(lpkg)
+	if ld.Mode&(NeedSyntax|NeedTypes|NeedTypesInfo) != 0 {
+
+		// We avoid using g.SetLimit to limit concurrency as
+		// it makes g.Go stop accepting work, which prevents
+		// workers from enqeuing, and thus finishing, and thus
+		// allowing the group to make progress: deadlock.
+		//
+		// Instead we use the ioLimit and cpuLimit semaphores.
+		g, _ := errgroup.WithContext(ld.Context)
+
+		// enqueues adds a package to the type-checking queue.
+		// It must have no unfinished successors.
+		var enqueue func(*loaderPackage)
+		enqueue = func(lpkg *loaderPackage) {
+			g.Go(func() error {
+				// Parse and type-check.
+				ld.loadPackage(lpkg)
+
+				// Notify each waiting predecessor,
+				// and enqueue it when it becomes a leaf.
+				for _, pred := range lpkg.preds {
+					if pred.unfinishedSuccs.Add(-1) == 0 { // decref
+						enqueue(pred)
+					}
+				}
+
+				return nil
+			})
+		}
+
+		// Load leaves first, adding new packages
+		// to the queue as they become leaves.
+		for _, leaf := range leaves {
+			enqueue(leaf)
+		}
+
+		if err := g.Wait(); err != nil {
+			return nil, err // cancelled
 		}
-		wg.Wait()
 	}
 
 	// If the context is done, return its error and
@@ -977,7 +1007,7 @@ func (ld *loader) refine(response *DriverResponse) ([]*Package, error) {
 		if ld.requestedMode&NeedSyntax == 0 {
 			ld.pkgs[i].Syntax = nil
 		}
-		if ld.requestedMode&NeedTypes == 0 && ld.requestedMode&NeedSyntax == 0 {
+		if ld.requestedMode&(NeedSyntax|NeedTypes|NeedTypesInfo) == 0 {
 			ld.pkgs[i].Fset = nil
 		}
 		if ld.requestedMode&NeedTypesInfo == 0 {
@@ -994,31 +1024,10 @@ func (ld *loader) refine(response *DriverResponse) ([]*Package, error) {
 	return result, nil
 }
 
-// loadRecursive loads the specified package and its dependencies,
-// recursively, in parallel, in topological order.
-// It is atomic and idempotent.
-// Precondition: ld.Mode&NeedTypes.
-func (ld *loader) loadRecursive(lpkg *loaderPackage) {
-	lpkg.loadOnce.Do(func() {
-		// Load the direct dependencies, in parallel.
-		var wg sync.WaitGroup
-		for _, ipkg := range lpkg.Imports {
-			imp := ld.pkgs[ipkg.ID]
-			wg.Add(1)
-			go func(imp *loaderPackage) {
-				ld.loadRecursive(imp)
-				wg.Done()
-			}(imp)
-		}
-		wg.Wait()
-		ld.loadPackage(lpkg)
-	})
-}
-
-// loadPackage loads the specified package.
+// loadPackage loads/parses/typechecks the specified package.
 // It must be called only once per Package,
 // after immediate dependencies are loaded.
-// Precondition: ld.Mode & NeedTypes.
+// Precondition: ld.Mode&(NeedSyntax|NeedTypes|NeedTypesInfo) != 0.
 func (ld *loader) loadPackage(lpkg *loaderPackage) {
 	if lpkg.PkgPath == "unsafe" {
 		// Fill in the blanks to avoid surprises.
@@ -1054,6 +1063,10 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
 	if !lpkg.needtypes && !lpkg.needsrc {
 		return
 	}
+
+	// TODO(adonovan): this condition looks wrong:
+	// I think it should be lpkg.needtypes && !lpg.needsrc,
+	// so that NeedSyntax without NeedTypes can be satisfied by export data.
 	if !lpkg.needsrc {
 		if err := ld.loadFromExportData(lpkg); err != nil {
 			lpkg.Errors = append(lpkg.Errors, Error{
@@ -1159,7 +1172,7 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
 	}
 
 	lpkg.Syntax = files
-	if ld.Config.Mode&NeedTypes == 0 {
+	if ld.Config.Mode&(NeedTypes|NeedTypesInfo) == 0 {
 		return
 	}
 
@@ -1170,16 +1183,20 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
 		return
 	}
 
-	lpkg.TypesInfo = &types.Info{
-		Types:      make(map[ast.Expr]types.TypeAndValue),
-		Defs:       make(map[*ast.Ident]types.Object),
-		Uses:       make(map[*ast.Ident]types.Object),
-		Implicits:  make(map[ast.Node]types.Object),
-		Instances:  make(map[*ast.Ident]types.Instance),
-		Scopes:     make(map[ast.Node]*types.Scope),
-		Selections: make(map[*ast.SelectorExpr]*types.Selection),
+	// Populate TypesInfo only if needed, as it
+	// causes the type checker to work much harder.
+	if ld.Config.Mode&NeedTypesInfo != 0 {
+		lpkg.TypesInfo = &types.Info{
+			Types:        make(map[ast.Expr]types.TypeAndValue),
+			Defs:         make(map[*ast.Ident]types.Object),
+			Uses:         make(map[*ast.Ident]types.Object),
+			Implicits:    make(map[ast.Node]types.Object),
+			Instances:    make(map[*ast.Ident]types.Instance),
+			Scopes:       make(map[ast.Node]*types.Scope),
+			Selections:   make(map[*ast.SelectorExpr]*types.Selection),
+			FileVersions: make(map[*ast.File]string),
+		}
 	}
-	versions.InitFileVersions(lpkg.TypesInfo)
 	lpkg.TypesSizes = ld.sizes
 
 	importer := importerFunc(func(path string) (*types.Package, error) {
@@ -1232,6 +1249,10 @@ func (ld *loader) loadPackage(lpkg *loaderPackage) {
 		}
 	}
 
+	// Type-checking is CPU intensive.
+	cpuLimit <- unit{}            // acquire a token
+	defer func() { <-cpuLimit }() // release a token
+
 	typErr := types.NewChecker(tc, ld.Fset, lpkg.Types, lpkg.TypesInfo).Files(lpkg.Syntax)
 	lpkg.importErrors = nil // no longer needed
 
@@ -1296,8 +1317,11 @@ type importerFunc func(path string) (*types.Package, error)
 func (f importerFunc) Import(path string) (*types.Package, error) { return f(path) }
 
 // We use a counting semaphore to limit
-// the number of parallel I/O calls per process.
-var ioLimit = make(chan bool, 20)
+// the number of parallel I/O calls or CPU threads per process.
+var (
+	ioLimit  = make(chan unit, 20)
+	cpuLimit = make(chan unit, runtime.GOMAXPROCS(0))
+)
 
 func (ld *loader) parseFile(filename string) (*ast.File, error) {
 	ld.parseCacheMu.Lock()
@@ -1314,20 +1338,28 @@ func (ld *loader) parseFile(filename string) (*ast.File, error) {
 
 		var src []byte
 		for f, contents := range ld.Config.Overlay {
+			// TODO(adonovan): Inefficient for large overlays.
+			// Do an exact name-based map lookup
+			// (for nonexistent files) followed by a
+			// FileID-based map lookup (for existing ones).
 			if sameFile(f, filename) {
 				src = contents
+				break
 			}
 		}
 		var err error
 		if src == nil {
-			ioLimit <- true // wait
+			ioLimit <- unit{} // acquire a token
 			src, err = os.ReadFile(filename)
-			<-ioLimit // signal
+			<-ioLimit // release a token
 		}
 		if err != nil {
 			v.err = err
 		} else {
+			// Parsing is CPU intensive.
+			cpuLimit <- unit{} // acquire a token
 			v.f, v.err = ld.ParseFile(ld.Fset, filename, src)
+			<-cpuLimit // release a token
 		}
 
 		close(v.ready)
@@ -1342,18 +1374,21 @@ func (ld *loader) parseFile(filename string) (*ast.File, error) {
 // Because files are scanned in parallel, the token.Pos
 // positions of the resulting ast.Files are not ordered.
 func (ld *loader) parseFiles(filenames []string) ([]*ast.File, []error) {
-	var wg sync.WaitGroup
-	n := len(filenames)
-	parsed := make([]*ast.File, n)
-	errors := make([]error, n)
-	for i, file := range filenames {
-		wg.Add(1)
-		go func(i int, filename string) {
+	var (
+		n      = len(filenames)
+		parsed = make([]*ast.File, n)
+		errors = make([]error, n)
+	)
+	var g errgroup.Group
+	for i, filename := range filenames {
+		// This creates goroutines unnecessarily in the
+		// cache-hit case, but that case is uncommon.
+		g.Go(func() error {
 			parsed[i], errors[i] = ld.parseFile(filename)
-			wg.Done()
-		}(i, file)
+			return nil
+		})
 	}
-	wg.Wait()
+	g.Wait()
 
 	// Eliminate nils, preserving order.
 	var o int
@@ -1524,4 +1559,4 @@ func usesExportData(cfg *Config) bool {
 	return cfg.Mode&NeedExportFile != 0 || cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedDeps == 0
 }
 
-var _ interface{} = io.Discard // assert build toolchain is go1.16 or later
+type unit struct{}
diff --git a/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go b/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go
index a70b727..16ed3c1 100644
--- a/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go
+++ b/vendor/golang.org/x/tools/go/types/objectpath/objectpath.go
@@ -281,25 +281,25 @@ func (enc *Encoder) For(obj types.Object) (Path, error) {
 
 		T := o.Type()
 		if alias, ok := T.(*types.Alias); ok {
-			if r := findTypeParam(obj, aliases.TypeParams(alias), path, opTypeParam, nil); r != nil {
+			if r := findTypeParam(obj, aliases.TypeParams(alias), path, opTypeParam); r != nil {
 				return Path(r), nil
 			}
-			if r := find(obj, aliases.Rhs(alias), append(path, opRhs), nil); r != nil {
+			if r := find(obj, aliases.Rhs(alias), append(path, opRhs)); r != nil {
 				return Path(r), nil
 			}
 
 		} else if tname.IsAlias() {
 			// legacy alias
-			if r := find(obj, T, path, nil); r != nil {
+			if r := find(obj, T, path); r != nil {
 				return Path(r), nil
 			}
 
 		} else if named, ok := T.(*types.Named); ok {
 			// defined (named) type
-			if r := findTypeParam(obj, named.TypeParams(), path, opTypeParam, nil); r != nil {
+			if r := findTypeParam(obj, named.TypeParams(), path, opTypeParam); r != nil {
 				return Path(r), nil
 			}
-			if r := find(obj, named.Underlying(), append(path, opUnderlying), nil); r != nil {
+			if r := find(obj, named.Underlying(), append(path, opUnderlying)); r != nil {
 				return Path(r), nil
 			}
 		}
@@ -312,7 +312,7 @@ func (enc *Encoder) For(obj types.Object) (Path, error) {
 		if _, ok := o.(*types.TypeName); !ok {
 			if o.Exported() {
 				// exported non-type (const, var, func)
-				if r := find(obj, o.Type(), append(path, opType), nil); r != nil {
+				if r := find(obj, o.Type(), append(path, opType)); r != nil {
 					return Path(r), nil
 				}
 			}
@@ -332,7 +332,7 @@ func (enc *Encoder) For(obj types.Object) (Path, error) {
 				if m == obj {
 					return Path(path2), nil // found declared method
 				}
-				if r := find(obj, m.Type(), append(path2, opType), nil); r != nil {
+				if r := find(obj, m.Type(), append(path2, opType)); r != nil {
 					return Path(r), nil
 				}
 			}
@@ -447,46 +447,64 @@ func (enc *Encoder) concreteMethod(meth *types.Func) (Path, bool) {
 //
 // The seen map is used to short circuit cycles through type parameters. If
 // nil, it will be allocated as necessary.
-func find(obj types.Object, T types.Type, path []byte, seen map[*types.TypeName]bool) []byte {
+//
+// The seenMethods map is used internally to short circuit cycles through
+// interface methods, such as occur in the following example:
+//
+//	type I interface { f() interface{I} }
+//
+// See golang/go#68046 for details.
+func find(obj types.Object, T types.Type, path []byte) []byte {
+	return (&finder{obj: obj}).find(T, path)
+}
+
+// finder closes over search state for a call to find.
+type finder struct {
+	obj             types.Object             // the sought object
+	seenTParamNames map[*types.TypeName]bool // for cycle breaking through type parameters
+	seenMethods     map[*types.Func]bool     // for cycle breaking through recursive interfaces
+}
+
+func (f *finder) find(T types.Type, path []byte) []byte {
 	switch T := T.(type) {
 	case *types.Alias:
-		return find(obj, types.Unalias(T), path, seen)
+		return f.find(types.Unalias(T), path)
 	case *types.Basic, *types.Named:
 		// Named types belonging to pkg were handled already,
 		// so T must belong to another package. No path.
 		return nil
 	case *types.Pointer:
-		return find(obj, T.Elem(), append(path, opElem), seen)
+		return f.find(T.Elem(), append(path, opElem))
 	case *types.Slice:
-		return find(obj, T.Elem(), append(path, opElem), seen)
+		return f.find(T.Elem(), append(path, opElem))
 	case *types.Array:
-		return find(obj, T.Elem(), append(path, opElem), seen)
+		return f.find(T.Elem(), append(path, opElem))
 	case *types.Chan:
-		return find(obj, T.Elem(), append(path, opElem), seen)
+		return f.find(T.Elem(), append(path, opElem))
 	case *types.Map:
-		if r := find(obj, T.Key(), append(path, opKey), seen); r != nil {
+		if r := f.find(T.Key(), append(path, opKey)); r != nil {
 			return r
 		}
-		return find(obj, T.Elem(), append(path, opElem), seen)
+		return f.find(T.Elem(), append(path, opElem))
 	case *types.Signature:
-		if r := findTypeParam(obj, T.RecvTypeParams(), path, opRecvTypeParam, nil); r != nil {
+		if r := f.findTypeParam(T.RecvTypeParams(), path, opRecvTypeParam); r != nil {
 			return r
 		}
-		if r := findTypeParam(obj, T.TypeParams(), path, opTypeParam, seen); r != nil {
+		if r := f.findTypeParam(T.TypeParams(), path, opTypeParam); r != nil {
 			return r
 		}
-		if r := find(obj, T.Params(), append(path, opParams), seen); r != nil {
+		if r := f.find(T.Params(), append(path, opParams)); r != nil {
 			return r
 		}
-		return find(obj, T.Results(), append(path, opResults), seen)
+		return f.find(T.Results(), append(path, opResults))
 	case *types.Struct:
 		for i := 0; i < T.NumFields(); i++ {
 			fld := T.Field(i)
 			path2 := appendOpArg(path, opField, i)
-			if fld == obj {
+			if fld == f.obj {
 				return path2 // found field var
 			}
-			if r := find(obj, fld.Type(), append(path2, opType), seen); r != nil {
+			if r := f.find(fld.Type(), append(path2, opType)); r != nil {
 				return r
 			}
 		}
@@ -495,10 +513,10 @@ func find(obj types.Object, T types.Type, path []byte, seen map[*types.TypeName]
 		for i := 0; i < T.Len(); i++ {
 			v := T.At(i)
 			path2 := appendOpArg(path, opAt, i)
-			if v == obj {
+			if v == f.obj {
 				return path2 // found param/result var
 			}
-			if r := find(obj, v.Type(), append(path2, opType), seen); r != nil {
+			if r := f.find(v.Type(), append(path2, opType)); r != nil {
 				return r
 			}
 		}
@@ -506,28 +524,35 @@ func find(obj types.Object, T types.Type, path []byte, seen map[*types.TypeName]
 	case *types.Interface:
 		for i := 0; i < T.NumMethods(); i++ {
 			m := T.Method(i)
+			if f.seenMethods[m] {
+				return nil
+			}
 			path2 := appendOpArg(path, opMethod, i)
-			if m == obj {
+			if m == f.obj {
 				return path2 // found interface method
 			}
-			if r := find(obj, m.Type(), append(path2, opType), seen); r != nil {
+			if f.seenMethods == nil {
+				f.seenMethods = make(map[*types.Func]bool)
+			}
+			f.seenMethods[m] = true
+			if r := f.find(m.Type(), append(path2, opType)); r != nil {
 				return r
 			}
 		}
 		return nil
 	case *types.TypeParam:
 		name := T.Obj()
-		if name == obj {
-			return append(path, opObj)
-		}
-		if seen[name] {
+		if f.seenTParamNames[name] {
 			return nil
 		}
-		if seen == nil {
-			seen = make(map[*types.TypeName]bool)
+		if name == f.obj {
+			return append(path, opObj)
 		}
-		seen[name] = true
-		if r := find(obj, T.Constraint(), append(path, opConstraint), seen); r != nil {
+		if f.seenTParamNames == nil {
+			f.seenTParamNames = make(map[*types.TypeName]bool)
+		}
+		f.seenTParamNames[name] = true
+		if r := f.find(T.Constraint(), append(path, opConstraint)); r != nil {
 			return r
 		}
 		return nil
@@ -535,11 +560,15 @@ func find(obj types.Object, T types.Type, path []byte, seen map[*types.TypeName]
 	panic(T)
 }
 
-func findTypeParam(obj types.Object, list *types.TypeParamList, path []byte, op byte, seen map[*types.TypeName]bool) []byte {
+func findTypeParam(obj types.Object, list *types.TypeParamList, path []byte, op byte) []byte {
+	return (&finder{obj: obj}).findTypeParam(list, path, op)
+}
+
+func (f *finder) findTypeParam(list *types.TypeParamList, path []byte, op byte) []byte {
 	for i := 0; i < list.Len(); i++ {
 		tparam := list.At(i)
 		path2 := appendOpArg(path, op, i)
-		if r := find(obj, tparam, path2, seen); r != nil {
+		if r := f.find(tparam, path2); r != nil {
 			return r
 		}
 	}
diff --git a/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go b/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go
index 24755b4..4ccaa21 100644
--- a/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go
+++ b/vendor/golang.org/x/tools/internal/analysisinternal/analysis.go
@@ -10,6 +10,7 @@ import (
 	"bytes"
 	"fmt"
 	"go/ast"
+	"go/scanner"
 	"go/token"
 	"go/types"
 	"os"
@@ -21,12 +22,46 @@ import (
 
 func TypeErrorEndPos(fset *token.FileSet, src []byte, start token.Pos) token.Pos {
 	// Get the end position for the type error.
-	offset, end := fset.PositionFor(start, false).Offset, start
-	if offset >= len(src) {
-		return end
+	file := fset.File(start)
+	if file == nil {
+		return start
 	}
-	if width := bytes.IndexAny(src[offset:], " \n,():;[]+-*"); width > 0 {
-		end = start + token.Pos(width)
+	if offset := file.PositionFor(start, false).Offset; offset > len(src) {
+		return start
+	} else {
+		src = src[offset:]
+	}
+
+	// Attempt to find a reasonable end position for the type error.
+	//
+	// TODO(rfindley): the heuristic implemented here is unclear. It looks like
+	// it seeks the end of the primary operand starting at start, but that is not
+	// quite implemented (for example, given a func literal this heuristic will
+	// return the range of the func keyword).
+	//
+	// We should formalize this heuristic, or deprecate it by finally proposing
+	// to add end position to all type checker errors.
+	//
+	// Nevertheless, ensure that the end position at least spans the current
+	// token at the cursor (this was golang/go#69505).
+	end := start
+	{
+		var s scanner.Scanner
+		fset := token.NewFileSet()
+		f := fset.AddFile("", fset.Base(), len(src))
+		s.Init(f, src, nil /* no error handler */, scanner.ScanComments)
+		pos, tok, lit := s.Scan()
+		if tok != token.SEMICOLON && token.Pos(f.Base()) <= pos && pos <= token.Pos(f.Base()+f.Size()) {
+			off := file.Offset(pos) + len(lit)
+			src = src[off:]
+			end += token.Pos(off)
+		}
+	}
+
+	// Look for bytes that might terminate the current operand. See note above:
+	// this is imprecise.
+	if width := bytes.IndexAny(src, " \n,():;[]+-*/"); width > 0 {
+		end += token.Pos(width)
 	}
 	return end
 }
diff --git a/vendor/golang.org/x/tools/internal/gcimporter/iexport.go b/vendor/golang.org/x/tools/internal/gcimporter/iexport.go
index 1e19fbe..7dfc31a 100644
--- a/vendor/golang.org/x/tools/internal/gcimporter/iexport.go
+++ b/vendor/golang.org/x/tools/internal/gcimporter/iexport.go
@@ -246,6 +246,26 @@ import (
 
 // IExportShallow encodes "shallow" export data for the specified package.
 //
+// For types, we use "shallow" export data. Historically, the Go
+// compiler always produced a summary of the types for a given package
+// that included types from other packages that it indirectly
+// referenced: "deep" export data. This had the advantage that the
+// compiler (and analogous tools such as gopls) need only load one
+// file per direct import.  However, it meant that the files tended to
+// get larger based on the level of the package in the import
+// graph. For example, higher-level packages in the kubernetes module
+// have over 1MB of "deep" export data, even when they have almost no
+// content of their own, merely because they mention a major type that
+// references many others. In pathological cases the export data was
+// 300x larger than the source for a package due to this quadratic
+// growth.
+//
+// "Shallow" export data means that the serialized types describe only
+// a single package. If those types mention types from other packages,
+// the type checker may need to request additional packages beyond
+// just the direct imports. Type information for the entire transitive
+// closure of imports is provided (lazily) by the DAG.
+//
 // No promises are made about the encoding other than that it can be decoded by
 // the same version of IIExportShallow. If you plan to save export data in the
 // file system, be sure to include a cryptographic digest of the executable in
@@ -268,8 +288,8 @@ func IExportShallow(fset *token.FileSet, pkg *types.Package, reportf ReportFunc)
 }
 
 // IImportShallow decodes "shallow" types.Package data encoded by
-// IExportShallow in the same executable. This function cannot import data from
-// cmd/compile or gcexportdata.Write.
+// [IExportShallow] in the same executable. This function cannot import data
+// from cmd/compile or gcexportdata.Write.
 //
 // The importer calls getPackages to obtain package symbols for all
 // packages mentioned in the export data, including the one being
diff --git a/vendor/golang.org/x/tools/internal/gcimporter/iimport.go b/vendor/golang.org/x/tools/internal/gcimporter/iimport.go
index 21908a1..e260c0e 100644
--- a/vendor/golang.org/x/tools/internal/gcimporter/iimport.go
+++ b/vendor/golang.org/x/tools/internal/gcimporter/iimport.go
@@ -558,6 +558,14 @@ type importReader struct {
 	prevColumn int64
 }
 
+// markBlack is redefined in iimport_go123.go, to work around golang/go#69912.
+//
+// If TypeNames are not marked black (in the sense of go/types cycle
+// detection), they may be mutated when dot-imported. Fix this by punching a
+// hole through the type, when compiling with Go 1.23. (The bug has been fixed
+// for 1.24, but the fix was not worth back-porting).
+var markBlack = func(name *types.TypeName) {}
+
 func (r *importReader) obj(name string) {
 	tag := r.byte()
 	pos := r.pos()
@@ -570,6 +578,7 @@ func (r *importReader) obj(name string) {
 		}
 		typ := r.typ()
 		obj := aliases.NewAlias(r.p.aliases, pos, r.currPkg, name, typ, tparams)
+		markBlack(obj) // workaround for golang/go#69912
 		r.declare(obj)
 
 	case constTag:
@@ -590,6 +599,9 @@ func (r *importReader) obj(name string) {
 		// declaration before recursing.
 		obj := types.NewTypeName(pos, r.currPkg, name, nil)
 		named := types.NewNamed(obj, nil, nil)
+
+		markBlack(obj) // workaround for golang/go#69912
+
 		// Declare obj before calling r.tparamList, so the new type name is recognized
 		// if used in the constraint of one of its own typeparams (see #48280).
 		r.declare(obj)
diff --git a/vendor/golang.org/x/tools/internal/gcimporter/iimport_go122.go b/vendor/golang.org/x/tools/internal/gcimporter/iimport_go122.go
new file mode 100644
index 0000000..7586bfa
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/gcimporter/iimport_go122.go
@@ -0,0 +1,53 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.22 && !go1.24
+
+package gcimporter
+
+import (
+	"go/token"
+	"go/types"
+	"unsafe"
+)
+
+// TODO(rfindley): delete this workaround once go1.24 is assured.
+
+func init() {
+	// Update markBlack so that it correctly sets the color
+	// of imported TypeNames.
+	//
+	// See the doc comment for markBlack for details.
+
+	type color uint32
+	const (
+		white color = iota
+		black
+		grey
+	)
+	type object struct {
+		_      *types.Scope
+		_      token.Pos
+		_      *types.Package
+		_      string
+		_      types.Type
+		_      uint32
+		color_ color
+		_      token.Pos
+	}
+	type typeName struct {
+		object
+	}
+
+	// If the size of types.TypeName changes, this will fail to compile.
+	const delta = int64(unsafe.Sizeof(typeName{})) - int64(unsafe.Sizeof(types.TypeName{}))
+	var _ [-delta * delta]int
+
+	markBlack = func(obj *types.TypeName) {
+		type uP = unsafe.Pointer
+		var ptr *typeName
+		*(*uP)(uP(&ptr)) = uP(obj)
+		ptr.color_ = black
+	}
+}
diff --git a/vendor/golang.org/x/tools/internal/testenv/testenv.go b/vendor/golang.org/x/tools/internal/testenv/testenv.go
index d4a17ce..70c186b 100644
--- a/vendor/golang.org/x/tools/internal/testenv/testenv.go
+++ b/vendor/golang.org/x/tools/internal/testenv/testenv.go
@@ -8,6 +8,7 @@ package testenv
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"go/build"
 	"os"
@@ -21,6 +22,7 @@ import (
 	"time"
 
 	"golang.org/x/mod/modfile"
+	"golang.org/x/tools/internal/gocommand"
 	"golang.org/x/tools/internal/goroot"
 )
 
@@ -323,6 +325,36 @@ func Go1Point() int {
 	panic("bad release tags")
 }
 
+// NeedsGoCommand1Point skips t if the ambient go command version in the PATH
+// of the current process is older than 1.x.
+//
+// NeedsGoCommand1Point memoizes the result of running the go command, so
+// should be called after all mutations of PATH.
+func NeedsGoCommand1Point(t testing.TB, x int) {
+	NeedsTool(t, "go")
+	go1point, err := goCommand1Point()
+	if err != nil {
+		panic(fmt.Sprintf("unable to determine go version: %v", err))
+	}
+	if go1point < x {
+		t.Helper()
+		t.Skipf("go command is version 1.%d, older than required 1.%d", go1point, x)
+	}
+}
+
+var (
+	goCommand1PointOnce sync.Once
+	goCommand1Point_    int
+	goCommand1PointErr  error
+)
+
+func goCommand1Point() (int, error) {
+	goCommand1PointOnce.Do(func() {
+		goCommand1Point_, goCommand1PointErr = gocommand.GoVersion(context.Background(), gocommand.Invocation{}, new(gocommand.Runner))
+	})
+	return goCommand1Point_, goCommand1PointErr
+}
+
 // NeedsGo1Point skips t if the Go version used to run the test is older than
 // 1.x.
 func NeedsGo1Point(t testing.TB, x int) {
@@ -332,6 +364,23 @@ func NeedsGo1Point(t testing.TB, x int) {
 	}
 }
 
+// SkipAfterGo1Point skips t if the ambient go command version in the PATH of
+// the current process is newer than 1.x.
+//
+// SkipAfterGoCommand1Point memoizes the result of running the go command, so
+// should be called after any mutation of PATH.
+func SkipAfterGoCommand1Point(t testing.TB, x int) {
+	NeedsTool(t, "go")
+	go1point, err := goCommand1Point()
+	if err != nil {
+		panic(fmt.Sprintf("unable to determine go version: %v", err))
+	}
+	if go1point > x {
+		t.Helper()
+		t.Skipf("go command is version 1.%d, newer than maximum 1.%d", go1point, x)
+	}
+}
+
 // SkipAfterGo1Point skips t if the Go version used to run the test is newer than
 // 1.x.
 func SkipAfterGo1Point(t testing.TB, x int) {
@@ -490,3 +539,17 @@ func NeedsGoExperiment(t testing.TB, flag string) {
 		t.Skipf("skipping test: flag %q is not set in GOEXPERIMENT=%q", flag, goexp)
 	}
 }
+
+// NeedsGOROOTDir skips the test if GOROOT/dir does not exist, and GOROOT is a
+// released version of Go (=has a VERSION file). Some GOROOT directories are
+// removed by cmd/distpack.
+//
+// See also golang/go#70081.
+func NeedsGOROOTDir(t *testing.T, dir string) {
+	gorootTest := filepath.Join(GOROOT(t), dir)
+	if _, err := os.Stat(gorootTest); os.IsNotExist(err) {
+		if _, err := os.Stat(filepath.Join(GOROOT(t), "VERSION")); err == nil {
+			t.Skipf("skipping: GOROOT/%s not present", dir)
+		}
+	}
+}
diff --git a/vendor/golang.org/x/tools/internal/typeparams/free.go b/vendor/golang.org/x/tools/internal/typeparams/free.go
index 3581082..0ade5c2 100644
--- a/vendor/golang.org/x/tools/internal/typeparams/free.go
+++ b/vendor/golang.org/x/tools/internal/typeparams/free.go
@@ -6,6 +6,8 @@ package typeparams
 
 import (
 	"go/types"
+
+	"golang.org/x/tools/internal/aliases"
 )
 
 // Free is a memoization of the set of free type parameters within a
@@ -36,6 +38,18 @@ func (w *Free) Has(typ types.Type) (res bool) {
 		break
 
 	case *types.Alias:
+		if aliases.TypeParams(t).Len() > aliases.TypeArgs(t).Len() {
+			return true // This is an uninstantiated Alias.
+		}
+		// The expansion of an alias can have free type parameters,
+		// whether or not the alias itself has type parameters:
+		//
+		//   func _[K comparable]() {
+		//     type Set      = map[K]bool // free(Set)      = {K}
+		//     type MapTo[V] = map[K]V    // free(Map[foo]) = {V}
+		//   }
+		//
+		// So, we must Unalias.
 		return w.Has(types.Unalias(t))
 
 	case *types.Array:
@@ -96,9 +110,8 @@ func (w *Free) Has(typ types.Type) (res bool) {
 
 	case *types.Named:
 		args := t.TypeArgs()
-		// TODO(taking): this does not match go/types/infer.go. Check with rfindley.
 		if params := t.TypeParams(); params.Len() > args.Len() {
-			return true
+			return true // this is an uninstantiated named type.
 		}
 		for i, n := 0, args.Len(); i < n; i++ {
 			if w.Has(args.At(i)) {
diff --git a/vendor/golang.org/x/tools/internal/typesinternal/types.go b/vendor/golang.org/x/tools/internal/typesinternal/types.go
index 8392328..df3ea52 100644
--- a/vendor/golang.org/x/tools/internal/typesinternal/types.go
+++ b/vendor/golang.org/x/tools/internal/typesinternal/types.go
@@ -11,6 +11,8 @@ import (
 	"go/types"
 	"reflect"
 	"unsafe"
+
+	"golang.org/x/tools/internal/aliases"
 )
 
 func SetUsesCgo(conf *types.Config) bool {
@@ -63,3 +65,57 @@ func NameRelativeTo(pkg *types.Package) types.Qualifier {
 		return other.Name()
 	}
 }
+
+// A NamedOrAlias is a [types.Type] that is named (as
+// defined by the spec) and capable of bearing type parameters: it
+// abstracts aliases ([types.Alias]) and defined types
+// ([types.Named]).
+//
+// Every type declared by an explicit "type" declaration is a
+// NamedOrAlias. (Built-in type symbols may additionally
+// have type [types.Basic], which is not a NamedOrAlias,
+// though the spec regards them as "named".)
+//
+// NamedOrAlias cannot expose the Origin method, because
+// [types.Alias.Origin] and [types.Named.Origin] have different
+// (covariant) result types; use [Origin] instead.
+type NamedOrAlias interface {
+	types.Type
+	Obj() *types.TypeName
+}
+
+// TypeParams is a light shim around t.TypeParams().
+// (go/types.Alias).TypeParams requires >= 1.23.
+func TypeParams(t NamedOrAlias) *types.TypeParamList {
+	switch t := t.(type) {
+	case *types.Alias:
+		return aliases.TypeParams(t)
+	case *types.Named:
+		return t.TypeParams()
+	}
+	return nil
+}
+
+// TypeArgs is a light shim around t.TypeArgs().
+// (go/types.Alias).TypeArgs requires >= 1.23.
+func TypeArgs(t NamedOrAlias) *types.TypeList {
+	switch t := t.(type) {
+	case *types.Alias:
+		return aliases.TypeArgs(t)
+	case *types.Named:
+		return t.TypeArgs()
+	}
+	return nil
+}
+
+// Origin returns the generic type of the Named or Alias type t if it
+// is instantiated, otherwise it returns t.
+func Origin(t NamedOrAlias) NamedOrAlias {
+	switch t := t.(type) {
+	case *types.Alias:
+		return aliases.Origin(t)
+	case *types.Named:
+		return t.Origin()
+	}
+	return t
+}
diff --git a/vendor/golang.org/x/tools/internal/versions/types.go b/vendor/golang.org/x/tools/internal/versions/types.go
index f0bb0d1..0fc10ce 100644
--- a/vendor/golang.org/x/tools/internal/versions/types.go
+++ b/vendor/golang.org/x/tools/internal/versions/types.go
@@ -31,8 +31,3 @@ func FileVersion(info *types.Info, file *ast.File) string {
 	// This would act as a max version on what a tool can support.
 	return Future
 }
-
-// InitFileVersions initializes info to record Go versions for Go files.
-func InitFileVersions(info *types.Info) {
-	info.FileVersions = make(map[*ast.File]string)
-}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index a2946ae..a10dabb 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -5,16 +5,16 @@ golang.org/x/exp/slices
 golang.org/x/exp/slog
 golang.org/x/exp/slog/internal
 golang.org/x/exp/slog/internal/buffer
-# golang.org/x/mod v0.21.0
+# golang.org/x/mod v0.22.0
 ## explicit; go 1.22.0
 golang.org/x/mod/internal/lazyregexp
 golang.org/x/mod/modfile
 golang.org/x/mod/module
 golang.org/x/mod/semver
-# golang.org/x/sync v0.8.0
+# golang.org/x/sync v0.9.0
 ## explicit; go 1.18
 golang.org/x/sync/errgroup
-# golang.org/x/tools v0.26.0
+# golang.org/x/tools v0.27.0
 ## explicit; go 1.22.0
 golang.org/x/tools/go/analysis
 golang.org/x/tools/go/analysis/analysistest