refactor: replace go-multierror with stdlib, remove dep

go.mod

@@ -6,15 +6,14 @@ toolchain go1.26.4
 
 require (
 	github.com/gocarina/gocsv v0.0.0-20240520201108-78e41c74b4b1
-	github.com/hashicorp/go-multierror v1.1.1
 	github.com/mattn/go-isatty v0.0.22
 	github.com/muesli/mango-cobra v1.3.0
 	github.com/muesli/roff v0.1.0
 	github.com/nwidger/jsoncolor v0.3.2
 	github.com/oklog/ulid/v2 v2.1.1
 	github.com/openfga/api/proto v0.0.0-20260319214821-f153694bfc20
 	github.com/openfga/go-sdk v0.8.2
-	github.com/openfga/language/pkg/go v0.2.1
+	github.com/openfga/language/pkg/go v0.3.0
 	github.com/openfga/openfga v1.17.1
 	github.com/rung/go-safecast v1.0.1
 	github.com/schollz/progressbar/v3 v3.19.0
@@ -48,7 +47,6 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect

go.sum

@@ -100,13 +100,8 @@ github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3 h1:B+8ClL/kCQkRiU82d9xajR
 github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3/go.mod h1:NbCUVmiS4foBGBHOYlCT25+YmGpJ32dZPi75pGEUpj4=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0 h1:5VipnvEpbqr2gA2VbM+nYVbkIF28c5ZQfqCBQ5g2xfk=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0/go.mod h1:Hyl3n6Twe1hvtd9XUXDec4pTvgMSEixRuQKPTMH2bNs=
-github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
-github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9neXJWAZQ=
 github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
-github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
-github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
 github.com/hashicorp/go-retryablehttp v0.7.8 h1:ylXZWnqa7Lhqpk0L1P1LzDtGcCR0rPVUrx/c8Unxc48=
 github.com/hashicorp/go-retryablehttp v0.7.8/go.mod h1:rjiScheydd+CxvumBsIrFKlx3iS0jrZ7LvzFGFmuKbw=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
@@ -184,8 +179,8 @@ github.com/openfga/api/proto v0.0.0-20260319214821-f153694bfc20 h1:xdVG0EDz9Z9Uh
 github.com/openfga/api/proto v0.0.0-20260319214821-f153694bfc20/go.mod h1:XDX4qYNBUM2Rsa2AbKPh+oocZc2zgme+EF2fFC6amVU=
 github.com/openfga/go-sdk v0.8.2 h1:eX2RJ7RD9sbxC4Oe8ZAFDZu6n/qYuO9SDrk7XAOE0Fg=
 github.com/openfga/go-sdk v0.8.2/go.mod h1:epiUE6IfG7Ezr3cYLepiUbCasChNowgP8AtJsN4HSpI=
-github.com/openfga/language/pkg/go v0.2.1 h1:nmVJTPfjvaJC2EWGcy8HrUyL15KkIfjjnmB3VFVeCts=
-github.com/openfga/language/pkg/go v0.2.1/go.mod h1:wg+EuPmYIaM855F2uPygT1hJoWcoUxAoecgYC5akXsw=
+github.com/openfga/language/pkg/go v0.3.0 h1:Ln0Cd3H/ych9YLErp5YlYNwf3PiQDfu0u+GjdpiSAyU=
+github.com/openfga/language/pkg/go v0.3.0/go.mod h1:7ctT4Q7erZ9RBzSsICUV94EUMdDEynomgG0Y9etTicI=
 github.com/openfga/openfga v1.17.1 h1:80sT4P5EYAKaRnbFqr4Wr6Cz5MI1WyT+Ss6kAAh1xD4=
 github.com/openfga/openfga v1.17.1/go.mod h1:ZKAbAaqcijZuOT0AfCVjqtK3FiOFwZZh0pE8nlLuElA=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=

internal/authorizationmodel/model.go

@@ -18,12 +18,12 @@ package authorizationmodel
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"os"
 	"path"
 	"time"
 
-	"github.com/hashicorp/go-multierror"
 	"github.com/oklog/ulid/v2"
 	pb "github.com/openfga/api/proto/openfga/v1"
 	openfga "github.com/openfga/go-sdk"
@@ -207,16 +207,18 @@ func (model *AuthzModel) ReadModelFromModFGA(modFile string) error {
 	}
 
 	moduleFiles := []language.ModuleFile{}
-	fileReadErrors := multierror.Error{}
+
+	var fileReadErrors []error
+
 	directory := path.Dir(modFile)
 
 	for _, fileName := range parsedModFile.Contents.Value {
 		filePath := path.Join(directory, fileName.Value)
 
 		fileContents, err := os.ReadFile(filePath)
 		if err != nil {
-			fileReadErrors = *multierror.Append(
-				&fileReadErrors,
+			fileReadErrors = append(
+				fileReadErrors,
 				fmt.Errorf("failed to read module file %s due to %w", fileName.Value, err),
 			)
 
@@ -229,8 +231,8 @@ func (model *AuthzModel) ReadModelFromModFGA(modFile string) error {
 		})
 	}
 
-	if len(fileReadErrors.Errors) != 0 {
-		return &fileReadErrors
+	if len(fileReadErrors) != 0 {
+		return errors.Join(fileReadErrors...)
 	}
 
 	parsedAuthModel, err := language.TransformModuleFilesToModel(moduleFiles, parsedModFile.Schema.Value)