diff --git a/cl/internal/convert/convert.go b/cl/internal/convert/convert.go
index 111c60c1..7cf44f67 100644
--- a/cl/internal/convert/convert.go
+++ b/cl/internal/convert/convert.go
@@ -1,12 +1,14 @@
 package convert
 
 import (
+	"fmt"
 	"log"
 	"strings"
 
 	"github.com/goplus/llcppg/ast"
 	cfg "github.com/goplus/llcppg/cmd/gogensig/config"
 	llconfig "github.com/goplus/llcppg/config"
+	"github.com/goplus/mod/gopmod"
 )
 
 type dbgFlags = int
@@ -72,6 +74,10 @@ type Converter struct {
 }
 
 func NewConverter(config *Config) (*Converter, error) {
+	mod, err := gopmod.Load(config.OutputDir)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load mod: %w", err)
+	}
 	pkg, err := NewPackage(&PackageConfig{
 		PkgBase: PkgBase{
 			PkgPath: config.PkgPath,
@@ -79,11 +85,11 @@ func NewConverter(config *Config) (*Converter, error) {
 			Pubs:    config.TypeMap,
 		},
 		Name:           config.PkgName,
-		OutputDir:      config.OutputDir,
 		ConvSym:        config.ConvSym,
 		LibCommand:     config.Libs,
 		TrimPrefixes:   config.TrimPrefixes,
 		KeepUnderScore: config.KeepUnderScore,
+		Mod:            mod,
 	})
 	if err != nil {
 		return nil, err
diff --git a/cl/internal/convert/convert_builtin_test.go b/cl/internal/convert/convert_builtin_test.go
index 708f00a7..38ac0030 100644
--- a/cl/internal/convert/convert_builtin_test.go
+++ b/cl/internal/convert/convert_builtin_test.go
@@ -50,7 +50,6 @@ func basicConverter() *Converter {
 
 func TestPkgFail(t *testing.T) {
 	converter := basicConverter()
-	defer os.RemoveAll(converter.GenPkg.conf.OutputDir)
 	t.Run("ProcessFail", func(t *testing.T) {
 		defer func() {
 			checkPanic(t, recover(), "File \"noexist.h\" not found in FileMap")
diff --git a/cl/internal/convert/convert_test.go b/cl/internal/convert/convert_test.go
index 3c168fe0..08770e07 100644
--- a/cl/internal/convert/convert_test.go
+++ b/cl/internal/convert/convert_test.go
@@ -309,7 +309,6 @@ func testFrom(t *testing.T, dir string, gen bool, validateFunc func(t *testing.T
 }
 
 func TestNewConvert(t *testing.T) {
-	// todo: remove this,convert will not read llcppg.cfg directly
 	cfg := &llcppg.Config{
 		Libs: "${pkg-config --libs xxx}",
 	}
@@ -330,6 +329,15 @@ func TestNewConvert(t *testing.T) {
 	}
 }
 
+func TestNewConverterFail(t *testing.T) {
+	_, err := convert.NewConverter(&convert.Config{
+		OutputDir: "/invalid/path",
+	})
+	if err == nil {
+		t.Fatal("Expected error, but got nil")
+	}
+}
+
 func TestModInitFail(t *testing.T) {
 	tempDir, err := os.MkdirTemp("", "gogensig-test")
 	if err != nil {
diff --git a/cl/internal/convert/package.go b/cl/internal/convert/package.go
index 3dc6a3e5..9f283529 100644
--- a/cl/internal/convert/package.go
+++ b/cl/internal/convert/package.go
@@ -50,7 +50,7 @@ type Package struct {
 type PackageConfig struct {
 	PkgBase
 	Name           string // current package name
-	OutputDir      string
+	Mod            *gopmod.Module
 	ConvSym        func(name *ast.Object, mangleName string) (goName string, err error)
 	GenConf        *gogen.Config
 	TrimPrefixes   []string
@@ -87,15 +87,10 @@ func NewPackage(config *PackageConfig) (*Package, error) {
 		config.Deps = append([]string{"c"}, config.Deps...)
 	}
 
-	mod, err := gopmod.Load(config.OutputDir)
-	if err != nil {
-		return nil, fmt.Errorf("failed to load mod: %w", err)
-	}
-
 	p.PkgInfo = NewPkgInfo(config.PkgPath, config.Deps, config.Pubs)
 
-	pkgManager := NewPkgDepLoader(mod, p.p)
-	err = pkgManager.InitDeps(p.PkgInfo)
+	pkgManager := NewPkgDepLoader(config.Mod, p.p)
+	err := pkgManager.InitDeps(p.PkgInfo)
 	if err != nil {
 		return nil, fmt.Errorf("failed to init deps: %w", err)
 	}
diff --git a/cl/internal/convert/package_bulitin_test.go b/cl/internal/convert/package_bulitin_test.go
index 6af627be..c02b6b6e 100644
--- a/cl/internal/convert/package_bulitin_test.go
+++ b/cl/internal/convert/package_bulitin_test.go
@@ -11,17 +11,22 @@ import (
 	"github.com/goplus/llcppg/cl/internal/cltest"
 	llcppg "github.com/goplus/llcppg/config"
 	ctoken "github.com/goplus/llcppg/token"
+	"github.com/goplus/mod/gopmod"
 )
 
 func emptyPkg() *Package {
+	mod, err := gopmod.Load(".")
+	if err != nil {
+		panic(err)
+	}
 	pkg, err := NewPackage(&PackageConfig{
 		PkgBase: PkgBase{
 			PkgPath: ".",
 			Pubs:    make(map[string]string),
 		},
 		Name:       "testpkg",
+		Mod:        mod,
 		GenConf:    &gogen.Config{},
-		OutputDir:  "",
 		ConvSym:    cltest.NewConvSym(),
 		LibCommand: "${pkg-config --libs xxx}",
 	})
@@ -156,6 +161,10 @@ func TestGetNameType(t *testing.T) {
 }
 
 func TestTrimPrefixes(t *testing.T) {
+	mod, err := gopmod.Load(".")
+	if err != nil {
+		panic(err)
+	}
 	pkg, err := NewPackage(&PackageConfig{
 		PkgBase: PkgBase{
 			PkgPath: ".",
@@ -163,10 +172,10 @@ func TestTrimPrefixes(t *testing.T) {
 		},
 		Name:         "testpkg",
 		GenConf:      &gogen.Config{},
-		OutputDir:    "",
 		ConvSym:      cltest.NewConvSym(),
 		TrimPrefixes: []string{"prefix1", "prefix2"},
 		LibCommand:   "${pkg-config --libs xxx}",
+		Mod:          mod,
 	})
 	if err != nil {
 		t.Fatal("NewPackage failed:", err)
diff --git a/cl/internal/convert/package_test.go b/cl/internal/convert/package_test.go
index a5fefd97..af08b0a3 100644
--- a/cl/internal/convert/package_test.go
+++ b/cl/internal/convert/package_test.go
@@ -2,6 +2,7 @@ package convert_test
 
 import (
 	"bytes"
+	"fmt"
 	"os"
 	"strings"
 	"testing"
@@ -108,7 +109,6 @@ type U struct {
 
 func TestToType(t *testing.T) {
 	pkg, err := createTestPkg(&convert.PackageConfig{
-		OutputDir:  "",
 		LibCommand: "${pkg-config --libs libcjson}",
 	})
 	if err != nil {
@@ -151,9 +151,7 @@ func TestToType(t *testing.T) {
 }
 
 func TestToTypeFail(t *testing.T) {
-	pkg, err := createTestPkg(&convert.PackageConfig{
-		OutputDir: "",
-	})
+	pkg, err := createTestPkg(&convert.PackageConfig{})
 	if err != nil {
 		t.Fatal("NewPackage failed:", err)
 	}
@@ -1081,7 +1079,6 @@ type Foo func(a c.Int, b c.Int) c.Int
 // Test Redefine error
 func TestRedef(t *testing.T) {
 	pkg, err := createTestPkg(&convert.PackageConfig{
-		OutputDir: "",
 		ConvSym: cltest.NewConvSym(
 			cltest.SymbolEntry{
 				CppName: "Bar", MangleName: "Bar", GoName: "Bar",
@@ -1710,7 +1707,6 @@ type Foo struct {
 
 func TestForwardDecl(t *testing.T) {
 	pkg, err := createTestPkg(&convert.PackageConfig{
-		OutputDir: "",
 		ConvSym: cltest.NewConvSym(
 			cltest.SymbolEntry{
 				CppName: "Bar", MangleName: "Bar", GoName: "Bar",
@@ -1857,6 +1853,13 @@ func createTestPkg(cfg *convert.PackageConfig) (*convert.Package, error) {
 	if cfg.LibCommand == "" {
 		cfg.LibCommand = "${pkg-config --libs xxx}"
 	}
+	if cfg.Mod == nil {
+		mod, err := gopmod.Load(".")
+		if err != nil {
+			return nil, fmt.Errorf("failed to load mod: %w", err)
+		}
+		cfg.Mod = mod
+	}
 	return convert.NewPackage(&convert.PackageConfig{
 		PkgBase: convert.PkgBase{
 			PkgPath: ".",
@@ -1865,11 +1868,11 @@ func createTestPkg(cfg *convert.PackageConfig) (*convert.Package, error) {
 		},
 		Name:           "testpkg",
 		GenConf:        &gogen.Config{},
-		OutputDir:      cfg.OutputDir,
 		ConvSym:        cfg.ConvSym,
 		LibCommand:     cfg.LibCommand,
 		TrimPrefixes:   cfg.TrimPrefixes,
 		KeepUnderScore: cfg.KeepUnderScore,
+		Mod:            cfg.Mod,
 	})
 }
 
@@ -1893,7 +1896,6 @@ func comparePackageOutput(t *testing.T, pkg *convert.Package, expect string) {
 
 func TestTypeClean(t *testing.T) {
 	pkg, err := createTestPkg(&convert.PackageConfig{
-		OutputDir: "",
 		ConvSym: cltest.NewConvSym(
 			cltest.SymbolEntry{CppName: "Func1", MangleName: "Func1", GoName: "Func1"},
 			cltest.SymbolEntry{CppName: "Func2", MangleName: "Func2", GoName: "Func2"},
@@ -2036,7 +2038,6 @@ func TestImport(t *testing.T) {
 	})
 	t.Run("invalid pub file", func(t *testing.T) {
 		_, err := createTestPkg(&convert.PackageConfig{
-			OutputDir: ".",
 			PkgBase: convert.PkgBase{
 				Deps: []string{
 					"github.com/goplus/llcppg/cl/internal/convert/testdata/invalidpub",
@@ -2049,7 +2050,6 @@ func TestImport(t *testing.T) {
 	})
 	t.Run("invalid dep", func(t *testing.T) {
 		_, err := createTestPkg(&convert.PackageConfig{
-			OutputDir: ".",
 			PkgBase: convert.PkgBase{
 				Deps: []string{
 					"github.com/goplus/llcppg/cl/internal/convert/testdata/invaliddep",
@@ -2062,7 +2062,6 @@ func TestImport(t *testing.T) {
 	})
 	t.Run("same type register", func(t *testing.T) {
 		_, err := createTestPkg(&convert.PackageConfig{
-			OutputDir: ".",
 			PkgBase: convert.PkgBase{
 				Deps: []string{
 					"github.com/goplus/llcppg/cl/internal/convert/testdata/cjson",
@@ -2086,11 +2085,16 @@ func TestUnkownHfile(t *testing.T) {
 }
 
 func TestNewPackageLinkFail(t *testing.T) {
-	_, err := convert.NewPackage(&convert.PackageConfig{
+	mod, err := gopmod.Load(".")
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = convert.NewPackage(&convert.PackageConfig{
 		PkgBase: convert.PkgBase{
 			PkgPath: ".",
 		},
 		Name:    "testpkg",
+		Mod:     mod,
 		GenConf: &gogen.Config{},
 	})
 	if err == nil {
diff --git a/cl/internal/convert/type_builtin_test.go b/cl/internal/convert/type_builtin_test.go
index 54190194..e7001884 100644
--- a/cl/internal/convert/type_builtin_test.go
+++ b/cl/internal/convert/type_builtin_test.go
@@ -8,6 +8,7 @@ import (
 	"github.com/goplus/gogen"
 	"github.com/goplus/llcppg/ast"
 	"github.com/goplus/llcppg/cl/internal/cltest"
+	"github.com/goplus/mod/gopmod"
 )
 
 func TestIdentRef(t *testing.T) {
@@ -19,15 +20,19 @@ func TestIdentRef(t *testing.T) {
 }
 
 func TestSubstObj(t *testing.T) {
+	mod, err := gopmod.Load(".")
+	if err != nil {
+		panic(err)
+	}
 	pkg, err := NewPackage(&PackageConfig{
 		PkgBase: PkgBase{
 			PkgPath: ".",
 		},
 		Name:       "testpkg",
 		GenConf:    &gogen.Config{},
-		OutputDir:  "",
 		ConvSym:    cltest.NewConvSym(),
 		LibCommand: "${pkg-config --libs xxx}",
+		Mod:        mod,
 	})
 	if err != nil {
 		t.Fatal("NewPackage failed")