manifest: propagate kickstart stage option creation errors

pkg/manifest/anaconda_installer.go

@@ -297,7 +297,7 @@ func (p *AnacondaInstaller) payloadStages() []*osbuild.Stage {
 		)
 
 		if err != nil {
-			panic("failed to create kickstartstage options for interactive defaults")
+			panic(fmt.Sprintf("failed to create kickstart stage options for interactive defaults: %v", err))
 		}
 
 		stages = append(stages, osbuild.NewKickstartStage(kickstartOptions))

pkg/manifest/anaconda_installer_iso_tree.go

@@ -378,7 +378,7 @@ func (p *AnacondaInstallerISOTree) ostreeCommitStages() []*osbuild.Stage {
 		p.OSName)
 
 	if err != nil {
-		panic("failed to create kickstart stage options")
+		panic(fmt.Sprintf("failed to create kickstart stage options: %v", err))
 	}
 
 	stages = append(stages, p.makeKickstartStages(kickstartOptions)...)
@@ -414,6 +414,9 @@ func (p *AnacondaInstallerISOTree) ostreeContainerStages() []*osbuild.Stage {
 		"oci",
 		"",
 		"")
+	if err != nil {
+		panic(fmt.Sprintf("failed to create kickstart stage options: %v", err))
+	}
 
 	// NOTE: these are similar to the unattended kickstart options in the
 	// other two payload configurations but partitioning is different and
@@ -428,10 +431,6 @@ func (p *AnacondaInstallerISOTree) ostreeContainerStages() []*osbuild.Stage {
 		All: true,
 	}
 
-	if err != nil {
-		panic("failed to create kickstartstage options")
-	}
-
 	stages = append(stages, osbuild.NewKickstartStage(kickstartOptions))
 
 	// and what we can't do in a separate kickstart that we include
@@ -489,7 +488,7 @@ func (p *AnacondaInstallerISOTree) tarPayloadStages() []*osbuild.Stage {
 			makeISORootPath(p.PayloadPath))
 
 		if err != nil {
-			panic("failed to create kickstart stage options")
+			panic(fmt.Sprintf("failed to create kickstart stage options: %v", err))
 		}
 
 		stages = append(stages, p.makeKickstartStages(kickstartOptions)...)