diff --git a/gopls/internal/regtest/bench_test.go b/gopls/internal/regtest/bench_test.go
index 9cb8ffd..54ed988 100644
--- a/gopls/internal/regtest/bench_test.go
+++ b/gopls/internal/regtest/bench_test.go
@@ -9,7 +9,6 @@
 	"fmt"
 	"testing"
 
-	"golang.org/x/tools/internal/lsp/fake"
 	"golang.org/x/tools/internal/lsp/protocol"
 )
 
@@ -56,14 +55,14 @@
 		t.Skip("-symbol_workdir not configured")
 	}
 	opts := stressTestOptions(symbolBench.workdir)
-	conf := fake.EditorConfig{}
+	conf := EditorConfig{}
 	if symbolBench.matcher != "" {
 		conf.SymbolMatcher = &symbolBench.matcher
 	}
 	if symbolBench.style != "" {
 		conf.SymbolStyle = &symbolBench.style
 	}
-	opts = append(opts, WithEditorConfig(conf))
+	opts = append(opts, conf)
 	withOptions(opts...).run(t, "", func(t *testing.T, env *Env) {
 		// We can't Await in this test, since we have disabled hooks. Instead, run
 		// one symbol request to completion to ensure all necessary cache entries
diff --git a/gopls/internal/regtest/codelens_test.go b/gopls/internal/regtest/codelens_test.go
index 8402e9b..3fcfdce 100644
--- a/gopls/internal/regtest/codelens_test.go
+++ b/gopls/internal/regtest/codelens_test.go
@@ -7,7 +7,6 @@
 import (
 	"testing"
 
-	"golang.org/x/tools/internal/lsp/fake"
 	"golang.org/x/tools/internal/lsp/protocol"
 	"golang.org/x/tools/internal/lsp/source"
 	"golang.org/x/tools/internal/lsp/tests"
@@ -48,13 +47,15 @@
 	}
 	for _, test := range tests {
 		t.Run(test.label, func(t *testing.T) {
-			runner.Run(t, workspace, func(t *testing.T, env *Env) {
+			withOptions(
+				EditorConfig{CodeLens: test.enabled},
+			).run(t, workspace, func(t *testing.T, env *Env) {
 				env.OpenFile("lib.go")
 				lens := env.CodeLens("lib.go")
 				if gotCodeLens := len(lens) > 0; gotCodeLens != test.wantCodeLens {
 					t.Errorf("got codeLens: %t, want %t", gotCodeLens, test.wantCodeLens)
 				}
-			}, WithEditorConfig(fake.EditorConfig{CodeLens: test.enabled}))
+			})
 		})
 	}
 }
diff --git a/gopls/internal/regtest/diagnostics_test.go b/gopls/internal/regtest/diagnostics_test.go
index 44b3003..d86ff44 100644
--- a/gopls/internal/regtest/diagnostics_test.go
+++ b/gopls/internal/regtest/diagnostics_test.go
@@ -438,8 +438,8 @@
 	fmt.Println("Hello World")
 }
 `
-	editorConfig := fake.EditorConfig{Env: map[string]string{"GOPATH": ""}}
-	withOptions(WithEditorConfig(editorConfig)).run(t, files, func(t *testing.T, env *Env) {
+	editorConfig := EditorConfig{Env: map[string]string{"GOPATH": ""}}
+	withOptions(editorConfig).run(t, files, func(t *testing.T, env *Env) {
 		env.OpenFile("main.go")
 		env.Await(env.DiagnosticAtRegexp("main.go", "fmt"))
 		env.SaveBuffer("main.go")
@@ -462,8 +462,8 @@
 
 var X = 0
 `
-	editorConfig := fake.EditorConfig{Env: map[string]string{"GOFLAGS": "-tags=foo"}}
-	withOptions(WithEditorConfig(editorConfig)).run(t, files, func(t *testing.T, env *Env) {
+	editorConfig := EditorConfig{Env: map[string]string{"GOFLAGS": "-tags=foo"}}
+	withOptions(editorConfig).run(t, files, func(t *testing.T, env *Env) {
 		env.OpenFile("main.go")
 		env.OrganizeImports("main.go")
 		env.Await(EmptyDiagnostics("main.go"))
@@ -556,9 +556,9 @@
 `
 	for _, go111module := range []string{"on", "off", ""} {
 		t.Run(fmt.Sprintf("GO111MODULE_%v", go111module), func(t *testing.T) {
-			withOptions(WithEditorConfig(fake.EditorConfig{
+			withOptions(EditorConfig{
 				Env: map[string]string{"GO111MODULE": go111module},
-			})).run(t, files, func(t *testing.T, env *Env) {
+			}).run(t, files, func(t *testing.T, env *Env) {
 				env.OpenFile("hello.txt")
 				env.Await(
 					OnceMet(
@@ -642,7 +642,9 @@
 	_ = conf.ErrHelpWanted
 }
 `
-	runner.Run(t, ardanLabs, func(t *testing.T, env *Env) {
+	withOptions(
+		WithProxyFiles(ardanLabsProxy),
+	).run(t, ardanLabs, func(t *testing.T, env *Env) {
 		// Expect a diagnostic with a suggested fix to add
 		// "github.com/ardanlabs/conf" to the go.mod file.
 		env.OpenFile("go.mod")
@@ -686,7 +688,7 @@
 		env.Await(
 			env.DiagnosticAtRegexp("main.go", `"github.com/ardanlabs/conf"`),
 		)
-	}, WithProxyFiles(ardanLabsProxy))
+	})
 }
 
 // Test for golang/go#38207.
@@ -699,7 +701,9 @@
 go 1.12
 -- main.go --
 `
-	runner.Run(t, emptyFile, func(t *testing.T, env *Env) {
+	withOptions(
+		WithProxyFiles(ardanLabsProxy),
+	).run(t, emptyFile, func(t *testing.T, env *Env) {
 		env.OpenFile("main.go")
 		env.OpenFile("go.mod")
 		env.EditBuffer("main.go", fake.NewEdit(0, 0, 0, 0, `package main
@@ -722,7 +726,7 @@
 		env.Await(
 			EmptyDiagnostics("main.go"),
 		)
-	}, WithProxyFiles(ardanLabsProxy))
+	})
 }
 
 // Test for golang/go#36960.
@@ -1263,7 +1267,7 @@
 `
 
 	withOptions(
-		WithEditorConfig(fake.EditorConfig{EnableStaticcheck: true}),
+		EditorConfig{EnableStaticcheck: true},
 	).run(t, files, func(t *testing.T, env *Env) {
 		env.OpenFile("main.go")
 		// Staticcheck should generate a diagnostic to simplify this literal.
diff --git a/gopls/internal/regtest/imports_test.go b/gopls/internal/regtest/imports_test.go
index 79e70d4..f570fa1 100644
--- a/gopls/internal/regtest/imports_test.go
+++ b/gopls/internal/regtest/imports_test.go
@@ -7,7 +7,6 @@
 	"strings"
 	"testing"
 
-	"golang.org/x/tools/internal/lsp/fake"
 	"golang.org/x/tools/internal/lsp/protocol"
 	"golang.org/x/tools/internal/testenv"
 )
@@ -143,9 +142,9 @@
 		t.Fatal(err)
 	}
 	defer os.RemoveAll(modcache)
-	editorConfig := fake.EditorConfig{Env: map[string]string{"GOMODCACHE": modcache}}
+	editorConfig := EditorConfig{Env: map[string]string{"GOMODCACHE": modcache}}
 	withOptions(
-		WithEditorConfig(editorConfig),
+		editorConfig,
 		WithProxyFiles(proxy),
 	).run(t, files, func(t *testing.T, env *Env) {
 		env.OpenFile("main.go")
diff --git a/gopls/internal/regtest/runner.go b/gopls/internal/regtest/runner.go
index ad38463..10d4bc4 100644
--- a/gopls/internal/regtest/runner.go
+++ b/gopls/internal/regtest/runner.go
@@ -117,11 +117,11 @@
 	})
 }
 
-// WithEditorConfig configures the editor's LSP session.
-func WithEditorConfig(config fake.EditorConfig) RunOption {
-	return optionSetter(func(opts *runConfig) {
-		opts.editor = config
-	})
+// EditorConfig is a RunOption option that configured the regtest editor.
+type EditorConfig fake.EditorConfig
+
+func (c EditorConfig) set(opts *runConfig) {
+	opts.editor = fake.EditorConfig(c)
 }
 
 // WithoutWorkspaceFolders prevents workspace folders from being sent as part
diff --git a/gopls/internal/regtest/symbol_test.go b/gopls/internal/regtest/symbol_test.go
index 68f3de4..af60488 100644
--- a/gopls/internal/regtest/symbol_test.go
+++ b/gopls/internal/regtest/symbol_test.go
@@ -7,7 +7,6 @@
 import (
 	"testing"
 
-	"golang.org/x/tools/internal/lsp/fake"
 	"golang.org/x/tools/internal/lsp/protocol"
 )
 
@@ -193,10 +192,9 @@
 
 func checkChecks(t *testing.T, matcher string, checks map[string]*expSymbolInformation) {
 	t.Helper()
-	opts := []RunOption{
-		WithEditorConfig(fake.EditorConfig{SymbolMatcher: &matcher}),
-	}
-	runner.Run(t, symbolSetup, func(t *testing.T, env *Env) {
+	withOptions(
+		EditorConfig{SymbolMatcher: &matcher},
+	).run(t, symbolSetup, func(t *testing.T, env *Env) {
 		t.Run(matcher, func(t *testing.T) {
 			for query, exp := range checks {
 				t.Run(query, func(t *testing.T) {
@@ -207,5 +205,5 @@
 				})
 			}
 		})
-	}, opts...)
+	})
 }
diff --git a/gopls/internal/regtest/unix_test.go b/gopls/internal/regtest/unix_test.go
index e67de38..cfdf094 100644
--- a/gopls/internal/regtest/unix_test.go
+++ b/gopls/internal/regtest/unix_test.go
@@ -8,8 +8,6 @@
 
 import (
 	"testing"
-
-	"golang.org/x/tools/internal/lsp/fake"
 )
 
 func TestBadGOPATH(t *testing.T) {
@@ -21,12 +19,10 @@
 	fmt.Println("Hello World")
 }
 `
-	editorConfig := fake.EditorConfig{
-		Env: map[string]string{"GOPATH": ":/path/to/gopath"},
-	}
-	// Test the case given in
 	// https://github.com/fatih/vim-go/issues/2673#issuecomment-622307211.
-	withOptions(WithEditorConfig(editorConfig)).run(t, files, func(t *testing.T, env *Env) {
+	withOptions(
+		EditorConfig{Env: map[string]string{"GOPATH": ":/path/to/gopath"}},
+	).run(t, files, func(t *testing.T, env *Env) {
 		env.OpenFile("main.go")
 		env.Await(env.DiagnosticAtRegexp("main.go", "fmt"))
 		if err := env.Editor.OrganizeImports(env.Ctx, "main.go"); err != nil {