Configure nodes.conf path dynamically from config

Removes the use of init() to initialize the variable.

- Closes: #1596
- See also: #1569

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

internal/pkg/api/util/util.go

@@ -1,12 +1,11 @@
 package util
 
 import (
-	"fmt"
 	"syscall"
 
 	"github.com/manifoldco/promptui"
 	"github.com/warewulf/warewulf/internal/pkg/api/routes/wwapiv1"
-	"github.com/warewulf/warewulf/internal/pkg/node"
+	"github.com/warewulf/warewulf/internal/pkg/config"
 	"github.com/warewulf/warewulf/internal/pkg/wwlog"
 )
 
@@ -31,17 +30,10 @@ Simple check if the config can be written in case wwctl isn't run as root
 */
 func CanWriteConfig() (canwrite *wwapiv1.CanWriteConfig, err error) {
 	canwrite = new(wwapiv1.CanWriteConfig)
-	// node is not initialized yet
-	if node.ConfigFile == "" {
-		_, err := node.New()
-		if err != nil {
-			canwrite.CanWriteConfig = false
-			return canwrite, fmt.Errorf("unable to initialize the node %w", err)
-		}
-	}
-	err = syscall.Access(node.ConfigFile, syscall.O_RDWR)
+	nodesConf := config.Get().Paths.NodesConf()
+	err = syscall.Access(nodesConf, syscall.O_RDWR)
 	if err != nil {
-		wwlog.Warn("Couldn't open %s:%s", node.ConfigFile, err)
+		wwlog.Warn("Couldn't open %s:%s", nodesConf, err)
 		canwrite.CanWriteConfig = false
 	} else {
 		canwrite.CanWriteConfig = true