try packages

.goreleaser.yml

@@ -1,10 +1,9 @@
 before:
   hooks:
-    - dep ensure -vendor-only
+    - go mod download
 builds:
   - env:
       - CGO_ENABLED=0
-      - GO111MODULE=off
     main: ./cli/pflags/main.go
     binary: pflags
     goos:

cli/pflags/api/generator.go

@@ -3,14 +3,13 @@ package api
 import (
 	"context"
 	"fmt"
-	"go/token"
 	"go/types"
 	"path/filepath"
 	"strings"
 
 	"github.com/lyft/flytestdlib/logger"
 
-	"go/importer"
+	"golang.org/x/tools/go/packages"
 
 	"github.com/ernesto-jimenez/gogen/gogenutil"
 )
@@ -301,10 +300,14 @@ func NewGenerator(pkg, targetTypeName, defaultVariableName string) (*PFlagProvid
 		pkg = gogenutil.StripGopath(pkg)
 	}
 
-	targetPackage, err := importer.ForCompiler(token.NewFileSet(), "source", nil).Import(pkg)
+	config := &packages.Config{
+		Mode: packages.NeedTypes | packages.NeedTypesInfo,
+	}
+	loadedPkgs, err := packages.Load(config, pkg)
 	if err != nil {
 		return nil, err
 	}
+	targetPackage := loadedPkgs[0].Types
 
 	obj := targetPackage.Scope().Lookup(targetTypeName)
 	if obj == nil {

go.mod

@@ -46,7 +46,7 @@ require (
 	golang.org/x/net v0.0.0-20191021144547-ec77196f6094 // indirect
 	golang.org/x/sys v0.0.0-20191020212454-3e7259c5e7c2 // indirect
 	golang.org/x/time v0.0.0-20190921001708-c4c64cad1fd0
-	golang.org/x/tools v0.0.0-20191018212557-ed542cd5b28a
+	golang.org/x/tools v0.0.0-20191204011308-9611592c72f6
 	google.golang.org/api v0.11.1-0.20191020000718-bf72a15fd9e9 // indirect
 	google.golang.org/appengine v1.6.5 // indirect
 	google.golang.org/grpc v1.24.0 // indirect

go.sum

@@ -295,6 +295,8 @@ golang.org/x/tools v0.0.0-20190927191325-030b2cf1153e/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191010171213-8abd42400456/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191018212557-ed542cd5b28a h1:UuQ+70Pi/ZdWHuP4v457pkXeOynTdgd/4enxeIO/98k=
 golang.org/x/tools v0.0.0-20191018212557-ed542cd5b28a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191204011308-9611592c72f6 h1:BP62y4oUl8+/CvHuvVqHIPmVRixgDl6y6a+tR7pXXIA=
+golang.org/x/tools v0.0.0-20191204011308-9611592c72f6/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=