Reduce number of dependencies (#92)

cmd/gcr-cleaner-cli/main.go

@@ -30,7 +30,6 @@ import (
 	"github.com/GoogleCloudPlatform/gcr-cleaner/pkg/gcrcleaner"
 	gcrauthn "github.com/google/go-containerregistry/pkg/authn"
 	gcrgoogle "github.com/google/go-containerregistry/pkg/v1/google"
-	"github.com/hashicorp/go-multierror"
 )
 
 var (
@@ -183,12 +182,12 @@ func realMain(ctx context.Context, logger *gcrcleaner.Logger) error {
 		since.Format(time.RFC3339), len(repos))
 
 	// Do the deletion.
-	var result *multierror.Error
+	var errs []error
 	for i, repo := range repos {
 		fmt.Fprintf(stdout, "%s\n", repo)
 		deleted, err := cleaner.Clean(ctx, repo, since, *keepPtr, tagFilter, *dryRunPtr)
 		if err != nil {
-			result = multierror.Append(result, err)
+			errs = append(errs, err)
 		}
 
 		if len(deleted) > 0 {
@@ -203,5 +202,6 @@ func realMain(ctx context.Context, logger *gcrcleaner.Logger) error {
 			fmt.Fprintf(stdout, "\n")
 		}
 	}
-	return result.ErrorOrNil()
+
+	return gcrcleaner.ErrsToError(errs)
 }

go.mod

@@ -3,29 +3,25 @@ module github.com/GoogleCloudPlatform/gcr-cleaner
 go 1.18
 
 require (
-	github.com/gammazero/workerpool v1.1.2
-	github.com/google/go-containerregistry v0.9.0
-	github.com/hashicorp/go-multierror v1.1.1
+	github.com/google/go-containerregistry v0.10.0
+	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f
 )
 
 require (
-	cloud.google.com/go/compute v1.6.1 // indirect
-	github.com/docker/cli v20.10.16+incompatible // indirect
+	cloud.google.com/go/compute v1.7.0 // indirect
+	github.com/docker/cli v20.10.17+incompatible // indirect
 	github.com/docker/distribution v2.8.1+incompatible // indirect
-	github.com/docker/docker v20.10.16+incompatible // indirect
+	github.com/docker/docker v20.10.17+incompatible // indirect
 	github.com/docker/docker-credential-helpers v0.6.4 // indirect
-	github.com/gammazero/deque v0.1.2 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.3-0.20220114050600-8b9d41f48198 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/sirupsen/logrus v1.8.1 // indirect
-	golang.org/x/net v0.0.0-20220531201128-c960675eff93 // indirect
-	golang.org/x/oauth2 v0.0.0-20220524215830-622c5d57e401 // indirect
-	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
-	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
+	github.com/sirupsen/logrus v1.9.0 // indirect
+	golang.org/x/net v0.0.0-20220708220712-1185a9018129 // indirect
+	golang.org/x/oauth2 v0.0.0-20220718184931-c8730f7fcb92 // indirect
+	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.28.0 // indirect
 )