Merge pull request #418 from Dray56/buildpack_update_stack

fix : Remove omitempty from stack attribute in buildpack

client/buildpack_test.go

@@ -85,11 +85,16 @@ func TestBuildpacks(t *testing.T) {
 				Endpoint: "/v3/buildpacks/6f3c68d0-e119-4ca2-8ce4-83661ad6e0eb",
 				Output:   g.Single(buildpack),
 				Status:   http.StatusOK,
-				PostForm: `{ "position": 1 }`,
+				PostForm: `{ 
+							"position": 1,
+							"stack" : "cflinuxfs4"
+							}`,
 			},
 			Expected: buildpack,
 			Action: func(c *Client, t *testing.T) (any, error) {
-				r := resource.NewBuildpackUpdate().WithPosition(1)
+				r := resource.NewBuildpackUpdate().
+					WithPosition(1).
+					WithStack("cflinuxfs4")
 				return c.Buildpacks.Update(context.Background(), "6f3c68d0-e119-4ca2-8ce4-83661ad6e0eb", r)
 			},
 		},

resource/buildpack.go

@@ -18,7 +18,7 @@ type BuildpackCreateOrUpdate struct {
 	Position *int      `json:"position,omitempty"` // The order in which the buildpacks are checked during buildpack auto-detection
 	Enabled  *bool     `json:"enabled,omitempty"`  // Whether the buildpack can be used for staging
 	Locked   *bool     `json:"locked,omitempty"`   // Whether the buildpack is locked to prevent updating the bits
-	Stack    *string   `json:"stack,omitempty"`    // The name of the stack that the buildpack will use
+	Stack    *string   `json:"stack"`              // The name of the stack that the buildpack will use
 	Metadata *Metadata `json:"metadata,omitempty"`
 }