Update to use the Dart Sass binary and the new v2 protocol

.github/workflows/test.yml

@@ -4,12 +4,12 @@ on:
   pull_request:
 name: Test
 env:
-  DART_SASS_VERSION: 1.56.1
+  SASS_VERSION: 1.63.2
 jobs:
   test:
     strategy:
       matrix:
-        go-version: [~1.18, ~1.19]
+        go-version: [~1.19, ~1.20]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -19,24 +19,25 @@ jobs:
         go-version: ${{ matrix.go-version }}
     - name: Checkout code
       uses: actions/checkout@v3
-    - name: Install dart-sass-embedded Linux
+    - name: Install dart-sass Linux
       if: matrix.os == 'ubuntu-latest'
       run: |
-        curl -LJO "https://github.com/sass/dart-sass-embedded/releases/download/${DART_SASS_VERSION}/sass_embedded-${DART_SASS_VERSION}-linux-x64.tar.gz";
-        tar -xvf "sass_embedded-${DART_SASS_VERSION}-linux-x64.tar.gz";
-        echo "DART_SASS_EMBEDDED_BINARY=$GITHUB_WORKSPACE/sass_embedded/dart-sass-embedded" >> $GITHUB_ENV
-    - name: Install dart-sass-embedded MacOS
+        curl -LJO "https://github.com/sass/dart-sass/releases/download/${SASS_VERSION}/dart-sass-${SASS_VERSION}-linux-x64.tar.gz";
+        tar -xvf "dart-sass-${SASS_VERSION}-linux-x64.tar.gz";
+        echo "DART_SASS_BINARY=$GITHUB_WORKSPACE/dart-sass/sass" >> $GITHUB_ENV
+        ./dart-sass/sass --version
+    - name: Install dart-sass MacOS
       if: matrix.os == 'macos-latest'
       run: |
-        curl -LJO "https://github.com/sass/dart-sass-embedded/releases/download/${DART_SASS_VERSION}/sass_embedded-${DART_SASS_VERSION}-macos-x64.tar.gz";
-        tar -xvf "sass_embedded-${DART_SASS_VERSION}-macos-x64.tar.gz";
-        echo "DART_SASS_EMBEDDED_BINARY=$GITHUB_WORKSPACE/sass_embedded/dart-sass-embedded" >> $GITHUB_ENV
-    - name: Install dart-sass-embedded Windows
+        curl -LJO "https://github.com/sass/dart-sass/releases/download/${SASS_VERSION}/dart-sass-${SASS_VERSION}-macos-x64.tar.gz";
+        tar -xvf "dart-sass-${SASS_VERSION}-macos-x64.tar.gz";
+        echo "DART_SASS_BINARY=$GITHUB_WORKSPACE/dart-sass/sass" >> $GITHUB_ENV
+    - name: Install dart-sass Windows
       if: matrix.os == 'windows-latest'
       run: |
-        curl -LJO "https://github.com/sass/dart-sass-embedded/releases/download/${env:DART_SASS_VERSION}/sass_embedded-${env:DART_SASS_VERSION}-windows-x64.zip";
-        Expand-Archive -Path "sass_embedded-${env:DART_SASS_VERSION}-windows-x64.zip" -DestinationPath .;
-        echo "DART_SASS_EMBEDDED_BINARY=$env:GITHUB_WORKSPACE/sass_embedded/dart-sass-embedded.bat" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
+        curl -LJO "https://github.com/sass/dart-sass/releases/download/${env:SASS_VERSION}/dart-sass-${env:SASS_VERSION}-windows-x64.zip";
+        Expand-Archive -Path "dart-sass-${env:SASS_VERSION}-windows-x64.zip" -DestinationPath .;
+        echo "DART_SASS_BINARY=$env:GITHUB_WORKSPACE/dart-sass/sass.bat" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
     - name: Test
       run: go test -race . -coverprofile=coverage.txt -covermode=atomic
     - name: Upload coverage

README.md

@@ -3,24 +3,13 @@
 [![codecov](https://codecov.io/gh/bep/godartsass/branch/main/graph/badge.svg?token=OWZ9RCAYWO)](https://codecov.io/gh/bep/godartsass)
 [![GoDoc](https://godoc.org/github.com/bep/godartsass?status.svg)](https://godoc.org/github.com/bep/godartsass)
 
-This is a Go API backed by the native [Dart Sass Embedded](https://github.com/sass/dart-sass-embedded) executable.
+This is a Go API backed by the native [Dart Sass](https://github.com/sass/dart-sass/releases) executable running with `sass --embedded`.
+
+>**Note:** The `v2.x.x` of this project targets the `v2` of the Dart Sass Embedded protocol with the `sass` exexutable in releases that can be downloaeded [here](https://github.com/sass/dart-sass/releases). For `v1` you need to import `github.com/bep/godartsass` and not `github.com/bep/godartsass/v2`.
 
 The primary motivation for this project is to provide `SCSS` support to [Hugo](https://gohugo.io/). I welcome PRs with bug fixes. I will also consider adding functionality, but please raise an issue discussing it first.
 
 For LibSass bindings in Go, see [GoLibSass](https://github.com/bep/golibsass).
 
-The benchmark below compares [GoLibSass](https://github.com/bep/golibsass) with this library. This is almost twice as fast when running single-threaded, but slower when running with multiple Goroutines. We're communicating with the compiler process via stdin/stdout, which becomes the serialized bottle neck here. That may be possible to improve, but for most practical applications (including Hugo), this should not matter.
-
-```bash
-Transpile/SCSS-16              770µs ± 0%     467µs ± 1%   -39.36%  (p=0.029 n=4+4)
-Transpile/SCSS_Parallel-16    92.2µs ± 2%   362.5µs ± 1%  +293.39%  (p=0.029 n=4+4)
-
-name                        old alloc/op   new alloc/op   delta
-Transpile/SCSS-16               192B ± 0%     1268B ± 0%  +560.42%  (p=0.029 n=4+4)
-Transpile/SCSS_Parallel-16      192B ± 0%     1272B ± 0%  +562.37%  (p=0.029 n=4+4)
-
-name                        old allocs/op  new allocs/op  delta
-Transpile/SCSS-16               2.00 ± 0%     19.00 ± 0%  +850.00%  (p=0.029 n=4+4)
-Transpile/SCSS_Parallel-16      2.00 ± 0%     19.00 ± 0%  +850.00%  (p=0.029 n=4+4)
 ```
 

conn.go

@@ -72,7 +72,7 @@ func (c conn) Close() error {
 
 var brokenPipeRe = regexp.MustCompile("Broken pipe|pipe is being closed")
 
-// dart-sass-embedded ends on itself on EOF, this is just to give it some
+// dart-sass ends on itself on EOF, this is just to give it some
 // time to do so.
 func (c conn) waitWithTimeout() error {
 	result := make(chan error, 1)
@@ -85,8 +85,8 @@ func (c conn) waitWithTimeout() error {
 			}
 		}
 		return err
-	case <-time.After(5 * time.Second):
-		return errors.New("timed out waiting for dart-sass-embedded to finish")
+	case <-time.After(10 * time.Second):
+		return errors.New("timed out waiting for dart-sass to finish")
 	}
 }
 

go.mod

@@ -1,9 +1,17 @@
-module github.com/bep/godartsass
+module github.com/bep/godartsass/v2
 
-go 1.15
+go 1.19
 
 require (
 	github.com/cli/safeexec v1.0.0
 	github.com/frankban/quicktest v1.14.2
 	google.golang.org/protobuf v1.25.0
 )
+
+require (
+	github.com/google/go-cmp v0.5.7 // indirect
+	github.com/kr/pretty v0.3.0 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/rogpeppe/go-internal v1.6.1 // indirect
+	golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 // indirect
+)

go.sum

@@ -7,8 +7,6 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/frankban/quicktest v1.11.2 h1:mjwHjStlXWibxOohM7HYieIViKyh56mmt3+6viyhDDI=
-github.com/frankban/quicktest v1.11.2/go.mod h1:K+q6oSqb0W0Ininfk863uOk1lMy69l/P6txr3mVT54s=
 github.com/frankban/quicktest v1.14.2 h1:SPb1KFFmM+ybpEjPUhCCkZOM5xlovT5UbrMvWnXyBns=
 github.com/frankban/quicktest v1.14.2/go.mod h1:mgiwOwqx65TmIk1wJ6Q7wvnVMocbUorkibMOrVTHZps=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@@ -26,17 +24,12 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
-github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.7 h1:81/ik6ipDQS2aGcBfIN5dHDB36BwrStyeAQquSYCV4o=
 github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
-github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
 github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=

internal/embeddedsass/README.md

@@ -1,5 +1,5 @@
 
 * Install protobuf: https://github.com/protocolbuffers/protobuf
-* Install the Go plugin: go get -u google.golang.org/protobuf/cmd/protoc-gen-go
-* Download the correct version of the proto file: https://github.com/sass/embedded-protocol/blob/master/embedded_sass.proto
+* Install the Go plugin: go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
+* Download the correct version of the proto file: https://github.com/sass/sass/blob/main/spec/embedded_sass.proto
 * protoc --go_opt=Membedded_sass.proto=github.com/bep/godartsass/internal/embeddedsass --go_opt=paths=source_relative --go_out=. embedded_sass.proto