fix(packagemanager): reimplement getPackagemanager to enable installing buildtools on linux

packagemanager/os.go

@@ -156,6 +156,10 @@ func parseOsRelease(osRelease string) *OS {
 			result.Version = strings.Trim(splitLine[1], "\"")
 		}
 	}
+	err := result.getPackageManager()
+	if err != nil {
+		log.Fatal(err)
+	}
 	return &result
 }
 
@@ -230,3 +234,31 @@ func getPlatformInfo() (*OS, error) {
 		return nil, fmt.Errorf("unsupported operating system: %s", runtime.GOOS)
 	}
 }
+
+func (os *OS) getPackageManager() error {
+	switch os.ID {
+	case "debian", "ubuntu":
+		os.PackageManager = "apt"
+		return nil
+	case "arch":
+		os.PackageManager = "pacman"
+		return nil
+	case "fedora":
+		os.PackageManager = "dnf"
+		return nil
+	default:
+		pmcommands := []string{
+			"apt",
+			"dnf",
+			"pacman",
+		}
+		for _, pmname := range pmcommands {
+			_, err := shell.ExecLookPath(pmname)
+			if err == nil {
+				os.PackageManager = pmname
+				return nil
+			}
+		}
+		return fmt.Errorf("no packagemanager found fos os: %s", os.Name)
+	}
+}