From fc95594390a5189b9c1c206ce76f83760843e9d3 Mon Sep 17 00:00:00 2001
From: Michael Dawson <mdawson@devrus.com>
Date: Thu, 3 Oct 2024 21:35:19 -0400
Subject: [PATCH] feat: add support for targets to cargo

Add support for targets in buildpack.toml which
are used for multi-arch support.

Signed-off-by: Michael Dawson <mdawson@devrus.com>
---
 cargo/config.go      |  6 ++++++
 cargo/config_test.go | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/cargo/config.go b/cargo/config.go
index 657068d0..c5dda4eb 100644
--- a/cargo/config.go
+++ b/cargo/config.go
@@ -15,6 +15,7 @@ type Config struct {
 	Metadata  ConfigMetadata  `toml:"metadata"  json:"metadata,omitempty"`
 	Stacks    []ConfigStack   `toml:"stacks"    json:"stacks,omitempty"`
 	Order     []ConfigOrder   `toml:"order"     json:"order,omitempty"`
+	Targets   []ConfigTarget  `toml:"targets"   json:"targets,omitempty"`
 }
 
 type ConfigStack struct {
@@ -22,6 +23,11 @@ type ConfigStack struct {
 	Mixins []string `toml:"mixins" json:"mixins,omitempty"`
 }
 
+type ConfigTarget struct {
+	OS     string   `toml:"os"     json:"os,omitempty"`
+	Arch   string   `toml:"arch"   json:"arch,omitempty"`
+}
+
 type ConfigBuildpack struct {
 	ID          string                   `toml:"id"                    json:"id,omitempty"`
 	Name        string                   `toml:"name"                  json:"name,omitempty"`
diff --git a/cargo/config_test.go b/cargo/config_test.go
index beae8a37..ae74b146 100644
--- a/cargo/config_test.go
+++ b/cargo/config_test.go
@@ -57,6 +57,12 @@ func testConfig(t *testing.T, context spec.G, it spec.S) {
 						ID: "other-stack-id",
 					},
 				},
+				Targets: []cargo.ConfigTarget{
+					{
+						OS:     "linux",
+						Arch:   "arm64",
+					},
+				},
 				Metadata: cargo.ConfigMetadata{
 					IncludeFiles: []string{
 						"some-include-file",
@@ -166,6 +172,10 @@ api = "0.6"
 [[stacks]]
   id = "other-stack-id"
 
+[[targets]]
+  os = "linux"
+  arch = "arm64"
+
 [[order]]
   [[order.group]]
 	  id = "some-dependency"