diff --git a/costello/parser/_fixtures/new_from_roots/e/e.go b/costello/parser/_fixtures/new_from_roots/e/e.go
new file mode 100644
index 0000000..991a1f6
--- /dev/null
+++ b/costello/parser/_fixtures/new_from_roots/e/e.go
@@ -0,0 +1,8 @@
+package q
+
+import "github.com/gobuffalo/packr"
+
+func init() {
+	packr.New("tom", "petty")
+	packr.NewBox("./heartbreakers")
+}
diff --git a/costello/parser/_fixtures/new_from_roots/q.go b/costello/parser/_fixtures/new_from_roots/q.go
new file mode 100644
index 0000000..32fa130
--- /dev/null
+++ b/costello/parser/_fixtures/new_from_roots/q.go
@@ -0,0 +1,7 @@
+package q
+
+import "github.com/gobuffalo/packr"
+
+func init() {
+	packr.New("aretha", "franklin")
+}
diff --git a/costello/parser/_fixtures/new_from_roots/w/w.go b/costello/parser/_fixtures/new_from_roots/w/w.go
new file mode 100644
index 0000000..7905807
--- /dev/null
+++ b/costello/parser/_fixtures/new_from_roots/w/w.go
@@ -0,0 +1,5 @@
+package main
+
+func main() {
+
+}
diff --git a/costello/parser/box.go b/costello/parser/box.go
new file mode 100644
index 0000000..cf63332
--- /dev/null
+++ b/costello/parser/box.go
@@ -0,0 +1,34 @@
+package parser
+
+import (
+	"encoding/json"
+	"os"
+	"strings"
+)
+
+type Box struct {
+	Name       string
+	Path       string
+	Package    string
+	PWD        string
+	PackageDir string
+}
+
+func (b Box) String() string {
+	x, _ := json.Marshal(b)
+	return string(x)
+}
+
+func NewBox(name string, path string) *Box {
+	if len(name) == 0 {
+		name = path
+	}
+	name = strings.Replace(name, "\"", "", -1)
+	pwd, _ := os.Getwd()
+	box := &Box{
+		Name: name,
+		Path: path,
+		PWD:  pwd,
+	}
+	return box
+}
diff --git a/parser/file.go b/costello/parser/file.go
similarity index 100%
rename from parser/file.go
rename to costello/parser/file.go
diff --git a/costello/parser/parser.go b/costello/parser/parser.go
new file mode 100644
index 0000000..0a52807
--- /dev/null
+++ b/costello/parser/parser.go
@@ -0,0 +1,62 @@
+package parser
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+
+	"github.com/karrick/godirwalk"
+	"github.com/pkg/errors"
+)
+
+type Parser struct {
+	Prospects []*File
+}
+
+func (p *Parser) Run() ([]*Box, error) {
+	var boxes []*Box
+	for _, pros := range p.Prospects {
+		fmt.Println("Parser: parsing", pros.Name())
+		v := NewVisitor(pros)
+		pbr, err := v.Run()
+		if err != nil {
+			return boxes, errors.WithStack(err)
+		}
+		for _, b := range pbr {
+			boxes = append(boxes, b)
+		}
+	}
+	return boxes, nil
+}
+
+func New(prospects ...*File) *Parser {
+	return &Parser{
+		Prospects: prospects,
+	}
+}
+
+func NewFromRoots(roots []string, ignore ...string) (*Parser, error) {
+	p := New()
+	callback := func(path string, de *godirwalk.Dirent) error {
+		if !IsProspect(path, ignore...) || de.IsDir() {
+			return nil
+		}
+		b, err := ioutil.ReadFile(path)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+		p.Prospects = append(p.Prospects, NewFile(path, bytes.NewReader(b)))
+		return nil
+	}
+	opts := &godirwalk.Options{
+		FollowSymbolicLinks: true,
+		Callback:            callback,
+	}
+	for _, root := range roots {
+		err := godirwalk.Walk(root, opts)
+		if err != nil {
+			return p, errors.WithStack(err)
+		}
+	}
+	return p, nil
+}
diff --git a/parser/parser_test.go b/costello/parser/parser_test.go
similarity index 71%
rename from parser/parser_test.go
rename to costello/parser/parser_test.go
index 1694b70..1fe2e9b 100644
--- a/parser/parser_test.go
+++ b/costello/parser/parser_test.go
@@ -21,6 +21,17 @@ func Test_Parser_Run(t *testing.T) {
 	r.Len(boxes, 4)
 }
 
+func Test_NewFrom_Roots(t *testing.T) {
+	r := require.New(t)
+	p, err := NewFromRoots([]string{"../parser/_fixtures/new_from_roots"})
+	r.NoError(err)
+
+	boxes, err := p.Run()
+	r.NoError(err)
+
+	r.Len(boxes, 3)
+}
+
 const basicGoTmpl = `package %s
 
 import "github.com/gobuffalo/packr"
diff --git a/parser/prospect.go b/costello/parser/prospect.go
similarity index 100%
rename from parser/prospect.go
rename to costello/parser/prospect.go
diff --git a/parser/prospect_test.go b/costello/parser/prospect_test.go
similarity index 100%
rename from parser/prospect_test.go
rename to costello/parser/prospect_test.go
diff --git a/parser/visitor.go b/costello/parser/visitor.go
similarity index 98%
rename from parser/visitor.go
rename to costello/parser/visitor.go
index 83b6c62..006903e 100644
--- a/parser/visitor.go
+++ b/costello/parser/visitor.go
@@ -268,18 +268,14 @@ func (v *Visitor) addBox(name string, path string) {
 	}
 	name = strings.Replace(name, "\"", "", -1)
 	if _, ok := v.boxes[name]; !ok {
-		pwd, _ := os.Getwd()
+		box := NewBox(name, path)
 		pd := filepath.Dir(v.File.Name())
+		pwd, _ := os.Getwd()
 		if !filepath.IsAbs(pd) {
 			pd = filepath.Join(pwd, pd)
 		}
-		box := &Box{
-			Name:       name,
-			Path:       path,
-			Package:    v.Package,
-			PackageDir: pd,
-			PWD:        pwd,
-		}
+		box.PackageDir = pd
+		box.Package = v.Package
 		v.boxes[name] = box
 	}
 }
diff --git a/parser/visitor_test.go b/costello/parser/visitor_test.go
similarity index 100%
rename from parser/visitor_test.go
rename to costello/parser/visitor_test.go
diff --git a/go.mod b/go.mod
index 9a926ad..d1c9a0d 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@ require (
 	github.com/stretchr/testify v1.2.2
 	golang.org/x/crypto v0.0.0-20180904163835-0709b304e793 // indirect
 	golang.org/x/net v0.0.0-20180906233101-161cd47e91fd // indirect
-	golang.org/x/sys v0.0.0-20180907202204-917fdcba135d // indirect
+	golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e // indirect
 	golang.org/x/text v0.3.0 // indirect
 	gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
diff --git a/go.sum b/go.sum
index c88913b..be3dbc4 100644
--- a/go.sum
+++ b/go.sum
@@ -78,8 +78,8 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180906133057-8cf3aee42992 h1:BH3eQWeGbwRU2+wxxuuPOdFBmaiBH81O8BugSjHeTFg=
 golang.org/x/sys v0.0.0-20180906133057-8cf3aee42992/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20180907202204-917fdcba135d h1:kWn1hlsqeUrk6JsLJO0ZFyz9bMg8u85voZlIuc68ZU4=
-golang.org/x/sys v0.0.0-20180907202204-917fdcba135d/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e h1:o3PsSEY8E4eXWkXrIP9YJALUkVZqzHJT5DOasTyn8Vs=
+golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/tools v0.0.0-20180904205237-0aa4b8830f48 h1:PIz+xUHW4G/jqfFWeKhQ96ZV/t2HDsXfWj923rV0bZY=
diff --git a/parser/box.go b/parser/box.go
deleted file mode 100644
index c921442..0000000
--- a/parser/box.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package parser
-
-import "encoding/json"
-
-type Box struct {
-	Name       string
-	Path       string
-	Package    string
-	PWD        string
-	PackageDir string
-}
-
-func (b Box) String() string {
-	x, _ := json.Marshal(b)
-	return string(x)
-}
diff --git a/parser/parser.go b/parser/parser.go
deleted file mode 100644
index e885922..0000000
--- a/parser/parser.go
+++ /dev/null
@@ -1,33 +0,0 @@
-package parser
-
-import (
-	"fmt"
-
-	"github.com/pkg/errors"
-)
-
-type Parser struct {
-	Prospects []*File
-}
-
-func (p *Parser) Run() ([]*Box, error) {
-	var boxes []*Box
-	for _, pros := range p.Prospects {
-		fmt.Println("Parser: parsing", pros.Name())
-		v := NewVisitor(pros)
-		pbr, err := v.Run()
-		if err != nil {
-			return boxes, errors.WithStack(err)
-		}
-		for _, b := range pbr {
-			boxes = append(boxes, b)
-		}
-	}
-	return boxes, nil
-}
-
-func New(prospects ...*File) *Parser {
-	return &Parser{
-		Prospects: prospects,
-	}
-}