diff --git a/cmd/noms-diff/noms_diff.go b/cmd/noms-diff/noms_diff.go
index 7ee9bda478..46a2862692 100644
--- a/cmd/noms-diff/noms_diff.go
+++ b/cmd/noms-diff/noms_diff.go
@@ -12,9 +12,9 @@ import (
 	"os"
 
 	"github.com/attic-labs/noms/cmd/noms-diff/diff"
+	"github.com/attic-labs/noms/go/d"
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/util/outputpager"
-	"github.com/attic-labs/noms/samples/go/util"
 )
 
 const (
@@ -41,20 +41,20 @@ func main() {
 	}
 
 	if len(flag.Args()) != 2 {
-		util.CheckErrorNoUsage(errors.New("Expected exactly two arguments"))
+		d.CheckErrorNoUsage(errors.New("Expected exactly two arguments"))
 	}
 
 	db1, value1, err := spec.GetPath(flag.Arg(0))
-	util.CheckErrorNoUsage(err)
+	d.CheckErrorNoUsage(err)
 	if value1 == nil {
-		util.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", flag.Arg(0)))
+		d.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", flag.Arg(0)))
 	}
 	defer db1.Close()
 
 	db2, value2, err := spec.GetPath(flag.Arg(1))
-	util.CheckErrorNoUsage(err)
+	d.CheckErrorNoUsage(err)
 	if value2 == nil {
-		util.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", flag.Arg(1)))
+		d.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", flag.Arg(1)))
 	}
 	defer db2.Close()
 
diff --git a/cmd/noms-ds/noms_ds.go b/cmd/noms-ds/noms_ds.go
index 5ff5aa9cd7..a062947234 100644
--- a/cmd/noms-ds/noms_ds.go
+++ b/cmd/noms-ds/noms_ds.go
@@ -9,9 +9,9 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/attic-labs/noms/go/d"
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/types"
-	"github.com/attic-labs/noms/samples/go/util"
 )
 
 func main() {
@@ -28,15 +28,15 @@ func main() {
 
 	if *toDelete != "" {
 		set, err := spec.GetDataset(*toDelete)
-		util.CheckError(err)
+		d.CheckError(err)
 
 		oldCommitRef, errBool := set.MaybeHeadRef()
 		if !errBool {
-			util.CheckError(fmt.Errorf("Dataset %v not found", set.ID()))
+			d.CheckError(fmt.Errorf("Dataset %v not found", set.ID()))
 		}
 
 		store, err := set.Database().Delete(set.ID())
-		util.CheckError(err)
+		d.CheckError(err)
 		defer store.Close()
 
 		fmt.Printf("Deleted dataset %v (was %v)\n\n", set.ID(), oldCommitRef.TargetHash().String())
@@ -47,7 +47,7 @@ func main() {
 		}
 
 		store, err := spec.GetDatabase(flag.Arg(0))
-		util.CheckError(err)
+		d.CheckError(err)
 		defer store.Close()
 
 		store.Datasets().IterAll(func(k, v types.Value) {
diff --git a/cmd/noms-log/noms_log.go b/cmd/noms-log/noms_log.go
index 6450b84ba1..74a80a6260 100644
--- a/cmd/noms-log/noms_log.go
+++ b/cmd/noms-log/noms_log.go
@@ -22,7 +22,6 @@ import (
 	"github.com/attic-labs/noms/go/types"
 	"github.com/attic-labs/noms/go/util/orderedparallel"
 	"github.com/attic-labs/noms/go/util/outputpager"
-	"github.com/attic-labs/noms/samples/go/util"
 	"github.com/mgutz/ansi"
 )
 
@@ -57,26 +56,26 @@ func main() {
 	}
 
 	if len(flag.Args()) != 1 {
-		util.CheckError(errors.New("expected exactly one argument"))
+		d.CheckError(errors.New("expected exactly one argument"))
 	}
 
 	useColor = shouldUseColor()
 
 	database, value, err := spec.GetPath(flag.Arg(0))
 	if err != nil {
-		util.CheckErrorNoUsage(err)
+		d.CheckErrorNoUsage(err)
 	}
 	defer database.Close()
 
 	if value == nil {
-		util.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", flag.Arg(0)))
+		d.CheckErrorNoUsage(fmt.Errorf("Object not found: %s", flag.Arg(0)))
 	}
 
 	waitChan := outputpager.PageOutput(!*outputpager.NoPager)
 
 	origCommit, ok := value.(types.Struct)
 	if !ok || !origCommit.Type().Equals(datas.CommitType()) {
-		util.CheckError(fmt.Errorf("%s does not reference a Commit object", flag.Arg(0)))
+		d.CheckError(fmt.Errorf("%s does not reference a Commit object", flag.Arg(0)))
 	}
 
 	iter := NewCommitIterator(database, origCommit)
diff --git a/cmd/noms-log/noms_log_test.go b/cmd/noms-log/noms_log_test.go
index 79ecdede50..fbb0f649fc 100644
--- a/cmd/noms-log/noms_log_test.go
+++ b/cmd/noms-log/noms_log_test.go
@@ -8,11 +8,11 @@ import (
 	"fmt"
 	"testing"
 
+	"github.com/attic-labs/noms/go/d"
 	"github.com/attic-labs/noms/go/dataset"
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/types"
 	"github.com/attic-labs/noms/samples/go/test_util"
-	"github.com/attic-labs/noms/samples/go/util"
 	"github.com/attic-labs/testify/assert"
 	"github.com/attic-labs/testify/suite"
 )
@@ -31,7 +31,7 @@ func (testExiter) Exit(code int) {
 }
 
 func TestNomsShow(t *testing.T) {
-	util.UtilExiter = testExiter{}
+	d.UtilExiter = testExiter{}
 	suite.Run(t, &nomsShowTestSuite{})
 }
 
diff --git a/cmd/noms-serve/noms_serve.go b/cmd/noms-serve/noms_serve.go
index 60469214e6..b637232b83 100644
--- a/cmd/noms-serve/noms_serve.go
+++ b/cmd/noms-serve/noms_serve.go
@@ -15,7 +15,6 @@ import (
 	"github.com/attic-labs/noms/go/datas"
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/util/profile"
-	"github.com/attic-labs/noms/samples/go/util"
 )
 
 var (
@@ -39,7 +38,7 @@ func main() {
 	}
 
 	cs, err := spec.GetChunkStore(flag.Arg(0))
-	util.CheckError(err)
+	d.CheckError(err)
 	server := datas.NewRemoteDatabaseServer(cs, *port)
 
 	// Shutdown server gracefully so that profile may be written
diff --git a/cmd/noms-show/noms_show.go b/cmd/noms-show/noms_show.go
index 3575823da6..e2cb44fefa 100644
--- a/cmd/noms-show/noms_show.go
+++ b/cmd/noms-show/noms_show.go
@@ -11,10 +11,10 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/attic-labs/noms/go/d"
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/types"
 	"github.com/attic-labs/noms/go/util/outputpager"
-	"github.com/attic-labs/noms/samples/go/util"
 )
 
 var (
@@ -36,11 +36,11 @@ func main() {
 	}
 
 	if len(flag.Args()) != 1 {
-		util.CheckErrorNoUsage(errors.New("expected exactly one argument"))
+		d.CheckErrorNoUsage(errors.New("expected exactly one argument"))
 	}
 
 	database, value, err := spec.GetPath(flag.Arg(0))
-	util.CheckErrorNoUsage(err)
+	d.CheckErrorNoUsage(err)
 
 	if value == nil {
 		fmt.Fprintf(os.Stderr, "Object not found: %s\n", flag.Arg(0))
diff --git a/cmd/noms-sync/noms_sync.go b/cmd/noms-sync/noms_sync.go
index c1cbe2c676..eca806109b 100644
--- a/cmd/noms-sync/noms_sync.go
+++ b/cmd/noms-sync/noms_sync.go
@@ -16,7 +16,6 @@ import (
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/types"
 	"github.com/attic-labs/noms/go/util/profile"
-	"github.com/attic-labs/noms/samples/go/util"
 )
 
 var (
@@ -38,15 +37,15 @@ func main() {
 	flag.Parse()
 
 	if flag.NArg() != 2 {
-		util.CheckError(errors.New("expected a source object and destination dataset"))
+		d.CheckError(errors.New("expected a source object and destination dataset"))
 	}
 
 	sourceStore, sourceObj, err := spec.GetPath(flag.Arg(0))
-	util.CheckError(err)
+	d.CheckError(err)
 	defer sourceStore.Close()
 
 	sinkDataset, err := spec.GetDataset(flag.Arg(1))
-	util.CheckError(err)
+	d.CheckError(err)
 	defer sinkDataset.Database().Close()
 
 	err = d.Try(func() {
diff --git a/samples/go/util/check_error.go b/go/d/check_error.go
similarity index 97%
rename from samples/go/util/check_error.go
rename to go/d/check_error.go
index 13c4a1a716..86189ce911 100644
--- a/samples/go/util/check_error.go
+++ b/go/d/check_error.go
@@ -2,7 +2,7 @@
 // Licensed under the Apache License, version 2.0:
 // http://www.apache.org/licenses/LICENSE-2.0
 
-package util
+package d
 
 import (
 	"flag"
diff --git a/samples/go/codec-perf-rig/.gitignore b/go/perf/codec-perf-rig/.gitignore
similarity index 100%
rename from samples/go/codec-perf-rig/.gitignore
rename to go/perf/codec-perf-rig/.gitignore
diff --git a/samples/go/codec-perf-rig/main.go b/go/perf/codec-perf-rig/main.go
similarity index 100%
rename from samples/go/codec-perf-rig/main.go
rename to go/perf/codec-perf-rig/main.go
diff --git a/samples/go/encode-perf-rig/.gitignore b/go/perf/encode-perf-rig/.gitignore
similarity index 100%
rename from samples/go/encode-perf-rig/.gitignore
rename to go/perf/encode-perf-rig/.gitignore
diff --git a/samples/go/encode-perf-rig/README.md b/go/perf/encode-perf-rig/README.md
similarity index 100%
rename from samples/go/encode-perf-rig/README.md
rename to go/perf/encode-perf-rig/README.md
diff --git a/samples/go/encode-perf-rig/binary-encoder.go b/go/perf/encode-perf-rig/binary-encoder.go
similarity index 100%
rename from samples/go/encode-perf-rig/binary-encoder.go
rename to go/perf/encode-perf-rig/binary-encoder.go
diff --git a/samples/go/encode-perf-rig/binary-int-encoder.go b/go/perf/encode-perf-rig/binary-int-encoder.go
similarity index 100%
rename from samples/go/encode-perf-rig/binary-int-encoder.go
rename to go/perf/encode-perf-rig/binary-int-encoder.go
diff --git a/samples/go/encode-perf-rig/binary-varint-encoder.go b/go/perf/encode-perf-rig/binary-varint-encoder.go
similarity index 100%
rename from samples/go/encode-perf-rig/binary-varint-encoder.go
rename to go/perf/encode-perf-rig/binary-varint-encoder.go
diff --git a/samples/go/encode-perf-rig/encoder-type.go b/go/perf/encode-perf-rig/encoder-type.go
similarity index 100%
rename from samples/go/encode-perf-rig/encoder-type.go
rename to go/perf/encode-perf-rig/encoder-type.go
diff --git a/samples/go/encode-perf-rig/main.go b/go/perf/encode-perf-rig/main.go
similarity index 100%
rename from samples/go/encode-perf-rig/main.go
rename to go/perf/encode-perf-rig/main.go
diff --git a/samples/go/encode-perf-rig/run.sh b/go/perf/encode-perf-rig/run.sh
similarity index 100%
rename from samples/go/encode-perf-rig/run.sh
rename to go/perf/encode-perf-rig/run.sh
diff --git a/samples/go/encode-perf-rig/string-encoder.go b/go/perf/encode-perf-rig/string-encoder.go
similarity index 100%
rename from samples/go/encode-perf-rig/string-encoder.go
rename to go/perf/encode-perf-rig/string-encoder.go
diff --git a/samples/go/hash-perf-rig/README.md b/go/perf/hash-perf-rig/README.md
similarity index 100%
rename from samples/go/hash-perf-rig/README.md
rename to go/perf/hash-perf-rig/README.md
diff --git a/samples/go/hash-perf-rig/main.go b/go/perf/hash-perf-rig/main.go
similarity index 100%
rename from samples/go/hash-perf-rig/main.go
rename to go/perf/hash-perf-rig/main.go
diff --git a/samples/go/util/util.go b/go/util/jsontonoms/json_to_noms.go
similarity index 98%
rename from samples/go/util/util.go
rename to go/util/jsontonoms/json_to_noms.go
index fb3c4d77aa..a4da2f5985 100644
--- a/samples/go/util/util.go
+++ b/go/util/jsontonoms/json_to_noms.go
@@ -2,7 +2,7 @@
 // Licensed under the Apache License, version 2.0:
 // http://www.apache.org/licenses/LICENSE-2.0
 
-package util
+package jsontonoms
 
 import (
 	"reflect"
diff --git a/samples/go/test_util/util_test.go b/go/util/jsontonoms/json_to_noms_test.go
similarity index 70%
rename from samples/go/test_util/util_test.go
rename to go/util/jsontonoms/json_to_noms_test.go
index 795065ff1c..9d54af0a01 100644
--- a/samples/go/test_util/util_test.go
+++ b/go/util/jsontonoms/json_to_noms_test.go
@@ -2,13 +2,12 @@
 // Licensed under the Apache License, version 2.0:
 // http://www.apache.org/licenses/LICENSE-2.0
 
-package test_util
+package jsontonoms
 
 import (
 	"testing"
 
 	"github.com/attic-labs/noms/go/types"
-	"github.com/attic-labs/noms/samples/go/util"
 	"github.com/attic-labs/testify/suite"
 )
 
@@ -21,23 +20,23 @@ type LibTestSuite struct {
 }
 
 func (suite *LibTestSuite) TestPrimitiveTypes() {
-	suite.EqualValues(types.String("expected"), util.NomsValueFromDecodedJSON("expected", false))
-	suite.EqualValues(types.Bool(false), util.NomsValueFromDecodedJSON(false, false))
-	suite.EqualValues(types.Number(1.7), util.NomsValueFromDecodedJSON(1.7, false))
-	suite.False(util.NomsValueFromDecodedJSON(1.7, false).Equals(types.Bool(true)))
+	suite.EqualValues(types.String("expected"), NomsValueFromDecodedJSON("expected", false))
+	suite.EqualValues(types.Bool(false), NomsValueFromDecodedJSON(false, false))
+	suite.EqualValues(types.Number(1.7), NomsValueFromDecodedJSON(1.7, false))
+	suite.False(NomsValueFromDecodedJSON(1.7, false).Equals(types.Bool(true)))
 }
 
 func (suite *LibTestSuite) TestCompositeTypes() {
 	// [false true]
 	suite.EqualValues(
 		types.NewList().Append(types.Bool(false)).Append(types.Bool(true)),
-		util.NomsValueFromDecodedJSON([]interface{}{false, true}, false))
+		NomsValueFromDecodedJSON([]interface{}{false, true}, false))
 
 	// [[false true]]
 	suite.EqualValues(
 		types.NewList().Append(
 			types.NewList().Append(types.Bool(false)).Append(types.Bool(true))),
-		util.NomsValueFromDecodedJSON([]interface{}{[]interface{}{false, true}}, false))
+		NomsValueFromDecodedJSON([]interface{}{[]interface{}{false, true}}, false))
 
 	// {"string": "string",
 	//  "list": [false true],
@@ -52,7 +51,7 @@ func (suite *LibTestSuite) TestCompositeTypes() {
 		types.NewMap(
 			types.String("nested"),
 			types.String("string")))
-	o := util.NomsValueFromDecodedJSON(map[string]interface{}{
+	o := NomsValueFromDecodedJSON(map[string]interface{}{
 		"string": "string",
 		"list":   []interface{}{false, true},
 		"map":    map[string]interface{}{"nested": "string"},
@@ -73,7 +72,7 @@ func (suite *LibTestSuite) TestCompositeTypeWithStruct() {
 			"nested": types.String("string"),
 		}),
 	})
-	o := util.NomsValueFromDecodedJSON(map[string]interface{}{
+	o := NomsValueFromDecodedJSON(map[string]interface{}{
 		"string": "string",
 		"list":   []interface{}{false, true},
 		"struct": map[string]interface{}{"nested": "string"},
@@ -83,5 +82,5 @@ func (suite *LibTestSuite) TestCompositeTypeWithStruct() {
 }
 
 func (suite *LibTestSuite) TestPanicOnUnsupportedType() {
-	suite.Panics(func() { util.NomsValueFromDecodedJSON(map[int]string{1: "one"}, false) }, "Should panic on map[int]string!")
+	suite.Panics(func() { NomsValueFromDecodedJSON(map[int]string{1: "one"}, false) }, "Should panic on map[int]string!")
 }
diff --git a/samples/go/csv/csv-export/exporter.go b/samples/go/csv/csv-export/exporter.go
index 40bc92bf6a..c52ff3de79 100644
--- a/samples/go/csv/csv-export/exporter.go
+++ b/samples/go/csv/csv-export/exporter.go
@@ -15,7 +15,6 @@ import (
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/util/profile"
 	"github.com/attic-labs/noms/samples/go/csv"
-	"github.com/attic-labs/noms/samples/go/util"
 )
 
 var (
@@ -37,16 +36,16 @@ func main() {
 	flag.Parse()
 
 	if flag.NArg() != 1 {
-		util.CheckError(errors.New("expected dataset arg"))
+		d.CheckError(errors.New("expected dataset arg"))
 	}
 
 	ds, err := spec.GetDataset(flag.Arg(0))
-	util.CheckError(err)
+	d.CheckError(err)
 
 	defer ds.Database().Close()
 
 	comma, err := csv.StringToRune(*delimiter)
-	util.CheckError(err)
+	d.CheckError(err)
 
 	err = d.Try(func() {
 		defer profile.MaybeStartProfile().Stop()
diff --git a/samples/go/csv/csv-import/importer.go b/samples/go/csv/csv-import/importer.go
index d7be02770c..e4a110cabc 100644
--- a/samples/go/csv/csv-import/importer.go
+++ b/samples/go/csv/csv-import/importer.go
@@ -22,7 +22,6 @@ import (
 	"github.com/attic-labs/noms/go/util/progressreader"
 	"github.com/attic-labs/noms/go/util/status"
 	"github.com/attic-labs/noms/samples/go/csv"
-	"github.com/attic-labs/noms/samples/go/util"
 
 	humanize "github.com/dustin/go-humanize"
 )
@@ -58,7 +57,7 @@ func main() {
 
 	if flag.NArg() != 2 {
 		err := fmt.Errorf("Expected exactly two parameters (dataset and path) after flags, but you have %d. Maybe you put a flag after the path?", flag.NArg())
-		util.CheckError(err)
+		d.CheckError(err)
 	}
 
 	path := flag.Arg(1)
@@ -71,7 +70,7 @@ func main() {
 
 	comma, err := csv.StringToRune(*delimiter)
 	if err != nil {
-		util.CheckError(err)
+		d.CheckError(err)
 		return
 	}
 
@@ -106,7 +105,7 @@ func main() {
 	}
 
 	ds, err := spec.GetDataset(flag.Arg(0))
-	util.CheckError(err)
+	d.CheckError(err)
 	defer ds.Database().Close()
 
 	kinds := []types.NomsKind{}
diff --git a/samples/go/json-import/json_importer.go b/samples/go/json-import/json_importer.go
index 8cf9adc63e..b5c94181c0 100644
--- a/samples/go/json-import/json_importer.go
+++ b/samples/go/json-import/json_importer.go
@@ -15,7 +15,7 @@ import (
 
 	"github.com/attic-labs/noms/go/d"
 	"github.com/attic-labs/noms/go/spec"
-	"github.com/attic-labs/noms/samples/go/util"
+	"github.com/attic-labs/noms/go/util/jsontonoms"
 )
 
 func main() {
@@ -28,11 +28,11 @@ func main() {
 	flag.Parse()
 
 	if len(flag.Args()) != 2 {
-		util.CheckError(errors.New("expected url and dataset flags"))
+		d.CheckError(errors.New("expected url and dataset flags"))
 	}
 
 	ds, err := spec.GetDataset(flag.Arg(1))
-	util.CheckError(err)
+	d.CheckError(err)
 
 	url := flag.Arg(0)
 	if url == "" {
@@ -53,7 +53,7 @@ func main() {
 		log.Fatalln("Error decoding JSON: ", err)
 	}
 
-	_, err = ds.Commit(util.NomsValueFromDecodedJSON(jsonObject, true))
+	_, err = ds.Commit(jsontonoms.NomsValueFromDecodedJSON(jsonObject, true))
 	d.PanicIfError(err)
 	ds.Database().Close()
 }
diff --git a/samples/go/url-fetch/fetch.go b/samples/go/url-fetch/fetch.go
index 9b496e84c8..8ea5deb1a1 100644
--- a/samples/go/url-fetch/fetch.go
+++ b/samples/go/url-fetch/fetch.go
@@ -20,7 +20,6 @@ import (
 	"github.com/attic-labs/noms/go/types"
 	"github.com/attic-labs/noms/go/util/progressreader"
 	"github.com/attic-labs/noms/go/util/status"
-	"github.com/attic-labs/noms/samples/go/util"
 	human "github.com/dustin/go-humanize"
 )
 
@@ -38,11 +37,11 @@ func main() {
 	flag.Parse()
 
 	if flag.NArg() != 2 {
-		util.CheckError(errors.New("expected dataset and url arguments"))
+		d.CheckError(errors.New("expected dataset and url arguments"))
 	}
 
 	ds, err := spec.GetDataset(flag.Arg(0))
-	util.CheckError(err)
+	d.CheckError(err)
 	defer ds.Database().Close()
 
 	url := flag.Arg(1)
diff --git a/samples/go/util/client_flags.go b/samples/go/util/client_flags.go
deleted file mode 100644
index 47d4990f5e..0000000000
--- a/samples/go/util/client_flags.go
+++ /dev/null
@@ -1,60 +0,0 @@
-// Copyright 2016 The Noms Authors. All rights reserved.
-// Licensed under the Apache License, version 2.0:
-// http://www.apache.org/licenses/LICENSE-2.0
-
-package util
-
-import (
-	"flag"
-	"fmt"
-	"os"
-
-	"github.com/attic-labs/noms/go/d"
-)
-
-type ClientFlags struct {
-	concurrencyFlag  *int
-	progressFileFlag *string
-	progressFile     *os.File
-}
-
-func NewFlags() ClientFlags {
-	return NewFlagsWithPrefix("")
-}
-
-func NewFlagsWithPrefix(prefix string) ClientFlags {
-	return ClientFlags{
-		flag.Int(prefix+"concurrency", 100, "degree of concurrency"),
-		flag.String(prefix+"progress-file", "", "file for logging progress"),
-		nil,
-	}
-}
-
-func (cf *ClientFlags) Concurrency() int {
-	return *cf.concurrencyFlag
-}
-
-func (cf *ClientFlags) CreateProgressFile() error {
-	if *cf.progressFileFlag == "" {
-		return fmt.Errorf("No progress file specified")
-	}
-	pf, err := os.Create(*cf.progressFileFlag)
-	if err != nil {
-		return fmt.Errorf("Unable to create progress status file: %s, err: %s", *cf.progressFileFlag, err)
-	}
-	cf.progressFile = pf
-	cf.UpdateProgress(0.0)
-	return err
-}
-
-func (cf *ClientFlags) CloseProgressFile() {
-	d.Chk.True(cf.progressFile != nil, "Progress file was never created")
-	cf.progressFile.Close()
-}
-
-func (cf *ClientFlags) UpdateProgress(pct float32) {
-	d.Chk.True(pct >= 0.0 && pct <= 1.0, "%.6f is not a valid percentage, must be in range [0, 1]", pct)
-	if cf.progressFile != nil {
-		cf.progressFile.WriteString(fmt.Sprintf("%.6f\n", pct))
-	}
-}
diff --git a/samples/go/util/httpcache.go b/samples/go/util/httpcache.go
deleted file mode 100644
index 9bcee4d26f..0000000000
--- a/samples/go/util/httpcache.go
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2016 The Noms Authors. All rights reserved.
-// Licensed under the Apache License, version 2.0:
-// http://www.apache.org/licenses/LICENSE-2.0
-
-package util
-
-import (
-	"flag"
-	"net/http"
-	"os/user"
-	"path"
-
-	"github.com/attic-labs/noms/go/d"
-	"github.com/gregjones/httpcache"
-	"github.com/gregjones/httpcache/diskcache"
-)
-
-const (
-	defaultDiskCacheDir = "~/noms/httpcache"
-)
-
-var (
-	diskCacheDir = flag.String("http-cache-dir", defaultDiskCacheDir, "a directory to use for an http disk cache between runs")
-)
-
-func CachingHttpClient() *http.Client {
-	if *diskCacheDir == "" {
-		return nil
-	}
-
-	if *diskCacheDir == defaultDiskCacheDir {
-		user, err := user.Current()
-		d.Chk.NoError(err)
-		*diskCacheDir = path.Join(user.HomeDir, "noms", "httpcache")
-	}
-
-	return httpcache.NewTransport(diskcache.New(*diskCacheDir)).Client()
-}
diff --git a/samples/go/util/rungen.go b/samples/go/util/rungen.go
deleted file mode 100644
index 970f5fe676..0000000000
--- a/samples/go/util/rungen.go
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright 2016 The Noms Authors. All rights reserved.
-// Licensed under the Apache License, version 2.0:
-// http://www.apache.org/licenses/LICENSE-2.0
-
-package util
-
-//go:generate go run ../../nomdl/codegen/codegen.go
diff --git a/samples/go/xml-import/xml_importer.go b/samples/go/xml-import/xml_importer.go
index 0e4ed32e09..e2ce6c66ba 100644
--- a/samples/go/xml-import/xml_importer.go
+++ b/samples/go/xml-import/xml_importer.go
@@ -18,8 +18,8 @@ import (
 	"github.com/attic-labs/noms/go/d"
 	"github.com/attic-labs/noms/go/spec"
 	"github.com/attic-labs/noms/go/types"
+	"github.com/attic-labs/noms/go/util/jsontonoms"
 	"github.com/attic-labs/noms/go/util/profile"
-	"github.com/attic-labs/noms/samples/go/util"
 	"github.com/clbanning/mxj"
 )
 
@@ -56,11 +56,11 @@ func main() {
 		flag.Parse()
 
 		if flag.NArg() != 2 {
-			util.CheckError(errors.New("Expected dataset followed by directory path"))
+			d.CheckError(errors.New("Expected dataset followed by directory path"))
 		}
 		dir := flag.Arg(1)
 		ds, err := spec.GetDataset(flag.Arg(0))
-		util.CheckError(err)
+		d.CheckError(err)
 
 		defer profile.MaybeStartProfile().Stop()
 
@@ -97,7 +97,7 @@ func main() {
 				object := xmlObject.Old()
 				file.Close()
 
-				nomsObj := util.NomsValueFromDecodedJSON(object, false)
+				nomsObj := jsontonoms.NomsValueFromDecodedJSON(object, false)
 				d.Chk.IsType(expectedType, nomsObj)
 
 				var r types.Ref