TOFIX: detect host type

Signed-off-by: Evan Lezar <elezar@nvidia.com>

cmd/nvidia-ctk-installer/toolkit/installer/installer.go

@@ -38,6 +38,8 @@ type toolkitInstaller struct {
 	ignoreErrors bool
 	sourceRoot   string
 
+	hostRoot     string
+	packageType  string
 	artifactRoot *artifactRoot
 
 	ensureTargetDirectory Installer
@@ -47,7 +49,10 @@ var _ Installer = (*toolkitInstaller)(nil)
 
 // New creates a toolkit installer with the specified options.
 func New(opts ...Option) (Installer, error) {
-	t := &toolkitInstaller{}
+	t := &toolkitInstaller{
+		hostRoot:    "/",
+		packageType: "auto",
+	}
 	for _, opt := range opts {
 		opt(t)
 	}
@@ -56,7 +61,11 @@ func New(opts ...Option) (Installer, error) {
 		t.logger = logger.New()
 	}
 	if t.sourceRoot == "" {
-		t.sourceRoot = "/"
+		sourceRoot, err := defaultSourceRoot(t.hostRoot, t.packageType)
+		if err != nil {
+			return nil, err
+		}
+		t.sourceRoot = sourceRoot
 	}
 	if t.artifactRoot == nil {
 		artifactRoot, err := newArtifactRoot(t.logger, t.sourceRoot)

cmd/nvidia-ctk-installer/toolkit/installer/options.go

@@ -45,3 +45,15 @@ func WithSourceRoot(sourceRoot string) Option {
 		ti.sourceRoot = sourceRoot
 	}
 }
+
+func WithPackageType(packageType string) Option {
+	return func(ti *toolkitInstaller) {
+		ti.packageType = packageType
+	}
+}
+
+func WithHostRoot(hostRoot string) Option {
+	return func(ti *toolkitInstaller) {
+		ti.hostRoot = hostRoot
+	}
+}

cmd/nvidia-ctk-installer/toolkit/installer/package-type.go

@@ -0,0 +1,55 @@
+/*
+*
+# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*
+*/
+package installer
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func resolvePackageType(hostRoot string, packageType string) (rPackageTypes string, rerr error) {
+	if packageType != "" && packageType != "auto" {
+		return packageType, nil
+	}
+
+	if info, err := os.Stat(filepath.Join(hostRoot, "/usr/bin/rpm")); err != nil && !info.IsDir() {
+		return "rpm", nil
+	}
+	if info, err := os.Stat(filepath.Join(hostRoot, "/usr/bin/dpkg")); err != nil && !info.IsDir() {
+		return "deb", nil
+	}
+
+	return "deb", nil
+}
+
+func defaultSourceRoot(hostRoot string, packageType string) (string, error) {
+	resolvedPackageType, err := resolvePackageType(hostRoot, packageType)
+	if err != nil {
+		return "", err
+	}
+	switch resolvedPackageType {
+	case "deb":
+		return "/artifacts/deb", nil
+	case "rpm":
+		return "/artifacts/rpm", nil
+	default:
+		return "", fmt.Errorf("invalid package type: %v", resolvedPackageType)
+	}
+}