Update value of localPath for composable packages (#1154)

## Description

<!-- Please include a summary of the change. Any relevant motivation or
context is also helpful, as well as any dependencies that are required
for this change -->

## Related Issue

<!--- This project prefers to accept pull requests related to open
issues -->
<!--- If suggesting a new feature or change, please discuss it in an
issue first -->
<!--- If fixing a bug, there should be an issue describing it with steps
to reproduce -->

Fixes #1153

## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)

---------

Co-authored-by: Megamind <[email protected]>
Co-authored-by: Jonathan Perry <[email protected]>

packages/zarf-registry/zarf.yaml

@@ -34,7 +34,7 @@ components:
     charts:
       - name: docker-registry
         releaseName: zarf-docker-registry
-        localPath: packages/zarf-registry/chart
+        localPath: chart
         version: 1.0.0
         namespace: zarf
         valuesFiles:
@@ -57,7 +57,7 @@ components:
     charts:
       - name: docker-registry
         releaseName: zarf-docker-registry
-        localPath: packages/zarf-registry/chart
+        localPath: chart
         version: 1.0.0
         namespace: zarf
         valuesFiles:

src/pkg/packager/compose.go

@@ -6,6 +6,7 @@ package packager
 
 import (
 	"fmt"
+	"os"
 	"path/filepath"
 
 	"github.com/defenseunicorns/zarf/src/config"
@@ -145,11 +146,18 @@ func (p *Packager) fixComposedFilepaths(parent, child types.ZarfComponent) types
 		child.Files[fileIdx].Source = p.getComposedFilePath(file.Source, parent.Import.Path)
 	}
 
-	// Prefix non-url composed component chart values files.
+	// Prefix non-url composed component chart values files and localPath.
 	for chartIdx, chart := range child.Charts {
 		for valuesIdx, valuesFile := range chart.ValuesFiles {
 			child.Charts[chartIdx].ValuesFiles[valuesIdx] = p.getComposedFilePath(valuesFile, parent.Import.Path)
 		}
+		if child.Charts[chartIdx].LocalPath != "" {
+			// Check if the localPath is relative to the parent Zarf package
+			if _, err := os.Stat(child.Charts[chartIdx].LocalPath); os.IsNotExist(err) {
+				// Since the chart localPath is not relative to the parent Zarf package, get the relative path from the composed child
+				child.Charts[chartIdx].LocalPath = p.getComposedFilePath(child.Charts[chartIdx].LocalPath, parent.Import.Path)
+			}
+		}
 	}
 
 	// Prefix non-url composed manifest files and kustomizations.