fix: retain symlinks added to zip archives

pkg/archive/zip/zip.go

@@ -5,8 +5,10 @@ package zip
 import (
 	"archive/zip"
 	"compress/flate"
+	"fmt"
 	"io"
 	"os"
+	"path/filepath"
 
 	"github.com/goreleaser/goreleaser/pkg/config"
 )
@@ -57,9 +59,17 @@ func (a Archive) Add(f config.File) error {
 	if err != nil {
 		return err
 	}
-	if info.IsDir() || info.Mode()&os.ModeSymlink != 0 {
+	if info.IsDir() {
 		return nil
 	}
+	if info.Mode()&os.ModeSymlink != 0 {
+		link, err := os.Readlink(f.Source) // #nosec
+		if err != nil {
+			return fmt.Errorf("%s: %w", f.Source, err)
+		}
+		_, err = w.Write([]byte(filepath.ToSlash(link)))
+		return err
+	}
 	file, err := os.Open(f.Source) // #nosec
 	if err != nil {
 		return err

pkg/archive/zip/zip_test.go

@@ -2,6 +2,7 @@ package zip
 
 import (
 	"archive/zip"
+	"bytes"
 	"io"
 	"io/fs"
 	"os"
@@ -85,6 +86,13 @@ func TestZipFile(t *testing.T) {
 		}
 		if zf.Name == "link.txt" {
 			require.True(t, zf.FileInfo().Mode()&os.ModeSymlink != 0)
+			rc, err := zf.Open()
+			require.NoError(t, err)
+			var content bytes.Buffer
+			_, err = io.Copy(&content, rc)
+			require.NoError(t, err)
+			rc.Close()
+			require.Equal(t, content.String(), "regular.txt")
 		}
 	}
 	require.Equal(t, []string{