dartsass: Remove support for v1 of the protocol/binary (note)

People who stil use a very old binary named `dart-sass-embedded` need to upgrade.

See https://gohugo.io/functions/css/sass/#dart-sass

6 files changed, 35 insertions, 113 deletions

diff --git a/common/herrors/file_error.go b/common/herrors/file_error.go
index 32a6f0081..007a06b48 100644
--- a/common/herrors/file_error.go
+++ b/common/herrors/file_error.go
@@ -20,8 +20,6 @@ import (
 	"io"
 	"path/filepath"
 
-	godartsassv1 "github.com/bep/godartsass"
-
 	"github.com/bep/godartsass/v2"
 	"github.com/bep/golibsass/libsass/libsasserrors"
 	"github.com/gohugoio/hugo/common/paths"
@@ -153,8 +151,6 @@ func (e *fileError) causeString() string {
 	// Avoid repeating the file info in the error message.
 	case godartsass.SassError:
 		return v.Message
-	case godartsassv1.SassError:
-		return v.Message
 	case libsasserrors.Error:
 		return v.Message
 	default:
@@ -392,13 +388,6 @@ func extractPosition(e error) (pos text.Position) {
 		pos.Filename = filename
 		pos.Offset = start.Offset
 		pos.ColumnNumber = start.Column
-	case godartsassv1.SassError:
-		span := v.Span
-		start := span.Start
-		filename, _ := paths.UrlToFilename(span.Url)
-		pos.Filename = filename
-		pos.Offset = start.Offset
-		pos.ColumnNumber = start.Column
 	case libsasserrors.Error:
 		pos.Filename = v.File
 		pos.LineNumber = v.Line
diff --git a/common/hugo/hugo.go b/common/hugo/hugo.go
index dd43cf7b6..11ec40e0b 100644
--- a/common/hugo/hugo.go
+++ b/common/hugo/hugo.go
@@ -25,9 +25,7 @@ import (
 	"sync"
 	"time"
 
-	godartsassv1 "github.com/bep/godartsass"
 	"github.com/bep/logg"
-	"github.com/mitchellh/mapstructure"
 
 	"github.com/bep/godartsass/v2"
 	"github.com/gohugoio/hugo/common/hcontext"
@@ -318,7 +316,7 @@ func GetDependencyListNonGo() []string {
 
 	if dartSass := dartSassVersion(); dartSass.ProtocolVersion != "" {
 		dartSassPath := "github.com/sass/dart-sass-embedded"
-		if IsDartSassV2() {
+		if IsDartSassGeV2() {
 			dartSassPath = "github.com/sass/dart-sass"
 		}
 		deps = append(deps,
@@ -365,22 +363,15 @@ type Dependency struct {
 }
 
 func dartSassVersion() godartsass.DartSassVersion {
-	if DartSassBinaryName == "" {
+	if DartSassBinaryName == "" || !IsDartSassGeV2() {
 		return godartsass.DartSassVersion{}
 	}
-	if IsDartSassV2() {
-		v, _ := godartsass.Version(DartSassBinaryName)
-		return v
-	}
-
-	v, _ := godartsassv1.Version(DartSassBinaryName)
-	var vv godartsass.DartSassVersion
-	mapstructure.WeakDecode(v, &vv)
-	return vv
+	v, _ := godartsass.Version(DartSassBinaryName)
+	return v
 }
 
 // DartSassBinaryName is the name of the Dart Sass binary to use.
-// TODO(beop) find a better place for this.
+// TODO(bep) find a better place for this.
 var DartSassBinaryName string
 
 func init() {
@@ -405,7 +396,10 @@ var (
 	dartSassBinaryNamesV2 = []string{"dart-sass", "sass"}
 )
 
-func IsDartSassV2() bool {
+// TODO(bep) we eventually want to remove this, but keep it for a while to throw an informative error.
+// We stopped supporting the old binary in Hugo 0.139.0.
+func IsDartSassGeV2() bool {
+	// dart-sass-embedded was the first version of the embedded Dart Sass before it was moved into the main project.
 	return !strings.Contains(DartSassBinaryName, "embedded")
 }
 
diff --git a/go.mod b/go.mod
index dcf1926f6..c19e8da34 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,6 @@ require (
 	github.com/bep/debounce v1.2.0
 	github.com/bep/gitmap v1.6.0
 	github.com/bep/goat v0.5.0
-	github.com/bep/godartsass v1.2.0
 	github.com/bep/godartsass/v2 v2.2.0
 	github.com/bep/golibsass v1.2.0
 	github.com/bep/gowebp v0.3.0
diff --git a/go.sum b/go.sum
index 4a61c396a..0ba28ce4d 100644
--- a/go.sum
+++ b/go.sum
@@ -129,8 +129,6 @@ github.com/bep/gitmap v1.6.0 h1:sDuQMm9HoTL0LtlrfxjbjgAg2wHQd4nkMup2FInYzhA=
 github.com/bep/gitmap v1.6.0/go.mod h1:n+3W1f/rot2hynsqEGxGMErPRgT41n9CkGuzPvz9cIw=
 github.com/bep/goat v0.5.0 h1:S8jLXHCVy/EHIoCY+btKkmcxcXFd34a0Q63/0D4TKeA=
 github.com/bep/goat v0.5.0/go.mod h1:Md9x7gRxiWKs85yHlVTvHQw9rg86Bm+Y4SuYE8CTH7c=
-github.com/bep/godartsass v1.2.0 h1:E2VvQrxAHAFwbjyOIExAMmogTItSKodoKuijNrGm5yU=
-github.com/bep/godartsass v1.2.0/go.mod h1:6LvK9RftsXMxGfsA0LDV12AGc4Jylnu6NgHL+Q5/pE8=
 github.com/bep/godartsass/v2 v2.2.0 h1:3hO9Dt4BOnxkKmRxc+OpoKVFrDvBycpSCXEdElVAMVI=
 github.com/bep/godartsass/v2 v2.2.0/go.mod h1:AcP8QgC+OwOXEq6im0WgDRYK7scDsmZCEW62o1prQLo=
 github.com/bep/golibsass v1.2.0 h1:nyZUkKP/0psr8nT6GR2cnmt99xS93Ji82ZD9AgOK6VI=
@@ -163,7 +161,6 @@ github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5P
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/clbanning/mxj/v2 v2.7.0 h1:WA/La7UGCanFe5NpHF0Q3DNtnCsVoxbPKuyBNHWRyME=
 github.com/clbanning/mxj/v2 v2.7.0/go.mod h1:hNiWqW14h+kc+MdF9C6/YoRfjEJoR3ou6tn/Qo+ve2s=
-github.com/cli/safeexec v1.0.0/go.mod h1:Z/D4tTN8Vs5gXYHDCbaM1S/anmEDnJb1iW0+EJ5zx3Q=
 github.com/cli/safeexec v1.0.1 h1:e/C79PbXF4yYTN/wauC4tviMxEV13BwljGj0N9j+N00=
 github.com/cli/safeexec v1.0.1/go.mod h1:Z/D4tTN8Vs5gXYHDCbaM1S/anmEDnJb1iW0+EJ5zx3Q=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
@@ -200,7 +197,6 @@ github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHqu
 github.com/frankban/quicktest v1.4.1/go.mod h1:36zfPVQyHxymz4cH7wlDmVwDrJuljRB60qkgn7rorfQ=
 github.com/frankban/quicktest v1.7.2/go.mod h1:jaStnuzAqU1AJdCO0l53JDCJrVDKcS03DbaAcR7Ks/o=
 github.com/frankban/quicktest v1.13.0/go.mod h1:qLE0fzW0VuyUAJgPU19zByoIr0HtCHN/r/VLSOOIySU=
-github.com/frankban/quicktest v1.14.2/go.mod h1:mgiwOwqx65TmIk1wJ6Q7wvnVMocbUorkibMOrVTHZps=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.8.0 h1:dAwr6QBTBZIkG8roQaJjGof0pp0EeF+tNV7YBP3F/8M=
@@ -287,7 +283,6 @@ github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
@@ -358,7 +353,6 @@ github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+o
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
-github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@@ -417,7 +411,6 @@ github.com/prashantv/gostub v1.1.0 h1:BTyx3RfQjRHnUWaGF9oQos79AlQ5k8WNktv7VGvVH4
 github.com/prashantv/gostub v1.1.0/go.mod h1:A5zLQHz7ieHGG7is6LLXLz7I8+3LZzsrV0P1IAHhP5U=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
 github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
diff --git a/resources/resource_transformers/tocss/dartsass/client.go b/resources/resource_transformers/tocss/dartsass/client.go
index e6f5567e4..b42327621 100644
--- a/resources/resource_transformers/tocss/dartsass/client.go
+++ b/resources/resource_transformers/tocss/dartsass/client.go
@@ -20,7 +20,6 @@ import (
 	"io"
 	"strings"
 
-	godartsassv1 "github.com/bep/godartsass"
 	"github.com/bep/godartsass/v2"
 	"github.com/bep/logg"
 	"github.com/gohugoio/hugo/common/herrors"
@@ -52,54 +51,39 @@ func New(fs *filesystems.SourceFilesystem, rs *resources.Spec) (*Client, error)
 		return nil, fmt.Errorf("no Dart Sass binary found in $PATH")
 	}
 
+	if !hugo.IsDartSassGeV2() {
+		return nil, fmt.Errorf("unsupported Dart Sass version detected, please upgrade to Dart Sass 2.0 or later, see https://gohugo.io/functions/css/sass/#dart-sass")
+	}
+
 	if err := rs.ExecHelper.Sec().CheckAllowedExec(hugo.DartSassBinaryName); err != nil {
 		return nil, err
 	}
 
 	var (
-		transpiler   *godartsass.Transpiler
-		transpilerv1 *godartsassv1.Transpiler
-		err          error
-		infol        = rs.Logger.InfoCommand("Dart Sass")
-		warnl        = rs.Logger.WarnCommand("Dart Sass")
+		transpiler *godartsass.Transpiler
+		err        error
+		infol      = rs.Logger.InfoCommand("Dart Sass")
+		warnl      = rs.Logger.WarnCommand("Dart Sass")
 	)
 
-	if hugo.IsDartSassV2() {
-		transpiler, err = godartsass.Start(godartsass.Options{
-			DartSassEmbeddedFilename: hugo.DartSassBinaryName,
-			LogEventHandler: func(event godartsass.LogEvent) {
-				message := strings.ReplaceAll(event.Message, dartSassStdinPrefix, "")
-				switch event.Type {
-				case godartsass.LogEventTypeDebug:
-					// Log as Info for now, we may adjust this if it gets too chatty.
-					infol.Log(logg.String(message))
-				default:
-					// The rest are either deprecations or @warn statements.
-					warnl.Log(logg.String(message))
-				}
-			},
-		})
-	} else {
-		transpilerv1, err = godartsassv1.Start(godartsassv1.Options{
-			DartSassEmbeddedFilename: hugo.DartSassBinaryName,
-			LogEventHandler: func(event godartsassv1.LogEvent) {
-				message := strings.ReplaceAll(event.Message, dartSassStdinPrefix, "")
-				switch event.Type {
-				case godartsassv1.LogEventTypeDebug:
-					// Log as Info for now, we may adjust this if it gets too chatty.
-					infol.Log(logg.String(message))
-				default:
-					// The rest are either deprecations or @warn statements.
-					warnl.Log(logg.String(message))
-				}
-			},
-		})
-	}
-
+	transpiler, err = godartsass.Start(godartsass.Options{
+		DartSassEmbeddedFilename: hugo.DartSassBinaryName,
+		LogEventHandler: func(event godartsass.LogEvent) {
+			message := strings.ReplaceAll(event.Message, dartSassStdinPrefix, "")
+			switch event.Type {
+			case godartsass.LogEventTypeDebug:
+				// Log as Info for now, we may adjust this if it gets too chatty.
+				infol.Log(logg.String(message))
+			default:
+				// The rest are either deprecations or @warn statements.
+				warnl.Log(logg.String(message))
+			}
+		},
+	})
 	if err != nil {
 		return nil, err
 	}
-	return &Client{sfs: fs, workFs: rs.BaseFs.Work, rs: rs, transpiler: transpiler, transpilerV1: transpilerv1}, nil
+	return &Client{sfs: fs, workFs: rs.BaseFs.Work, rs: rs, transpiler: transpiler}, nil
 }
 
 type Client struct {
@@ -108,9 +92,7 @@ type Client struct {
 	sfs                  *filesystems.SourceFilesystem
 	workFs               afero.Fs
 
-	// One of these are non-nil.
-	transpiler   *godartsass.Transpiler
-	transpilerV1 *godartsassv1.Transpiler
+	transpiler *godartsass.Transpiler
 }
 
 func (c *Client) ToCSS(res resources.ResourceTransformer, args map[string]any) (resource.Resource, error) {
@@ -121,13 +103,7 @@ func (c *Client) ToCSS(res resources.ResourceTransformer, args map[string]any) (
 }
 
 func (c *Client) Close() error {
-	if c.transpilerV1 != nil {
-		return c.transpilerV1.Close()
-	}
-	if c.transpiler != nil {
-		return c.transpiler.Close()
-	}
-	return nil
+	return c.transpiler.Close()
 }
 
 func (c *Client) toCSS(args godartsass.Args, src io.Reader) (godartsass.Result, error) {
@@ -135,26 +111,7 @@ func (c *Client) toCSS(args godartsass.Args, src io.Reader) (godartsass.Result,
 
 	args.Source = in
 
-	var (
-		err error
-		res godartsass.Result
-	)
-
-	if c.transpilerV1 != nil {
-		var resv1 godartsassv1.Result
-		var argsv1 godartsassv1.Args
-		mapstructure.Decode(args, &argsv1)
-		if args.ImportResolver != nil {
-			argsv1.ImportResolver = importResolverV1{args.ImportResolver}
-		}
-		resv1, err = c.transpilerV1.Execute(argsv1)
-		if err == nil {
-			mapstructure.Decode(resv1, &res)
-		}
-	} else {
-		res, err = c.transpiler.Execute(args)
-	}
-
+	res, err := c.transpiler.Execute(args)
 	if err != nil {
 		if err.Error() == "unexpected EOF" {
 			//lint:ignore ST1005 end user message.
diff --git a/resources/resource_transformers/tocss/dartsass/transform.go b/resources/resource_transformers/tocss/dartsass/transform.go
index d8b6ae5b4..e23ef0986 100644
--- a/resources/resource_transformers/tocss/dartsass/transform.go
+++ b/resources/resource_transformers/tocss/dartsass/transform.go
@@ -35,7 +35,6 @@ import (
 
 	"github.com/gohugoio/hugo/hugofs"
 
-	godartsassv1 "github.com/bep/godartsass"
 	"github.com/bep/godartsass/v2"
 )
 
@@ -206,12 +205,3 @@ func (t importResolver) Load(url string) (godartsass.Import, error) {
 
 	return godartsass.Import{Content: string(b), SourceSyntax: sourceSyntax}, err
 }
-
-type importResolverV1 struct {
-	godartsass.ImportResolver
-}
-
-func (t importResolverV1) Load(url string) (godartsassv1.Import, error) {
-	res, err := t.ImportResolver.Load(url)
-	return godartsassv1.Import{Content: res.Content, SourceSyntax: godartsassv1.SourceSyntax(res.SourceSyntax)}, err
-}