diff --git a/pkg/installer/installer.go b/pkg/installer/installer.go
index 3ed708e..02b1827 100644
--- a/pkg/installer/installer.go
+++ b/pkg/installer/installer.go
@@ -26,10 +26,6 @@ var (
 	buildInstallDir = filepath.Join(paths.BaseDir(), "installed_packages")
 )
 
-func logMessage(msg string) {
-	fmt.Println(msg)
-}
-
 func computeChecksum(filePath string) (string, error) {
 	data, err := ioutil.ReadFile(filePath)
 	if err != nil {
@@ -40,7 +36,6 @@ func computeChecksum(filePath string) (string, error) {
 }
 
 func downloadFile(url string) (string, error) {
-	logMessage("Downloading " + url + "...")
 	resp, err := http.Get(url)
 	if err != nil {
 		return "", err
@@ -52,17 +47,17 @@ func downloadFile(url string) (string, error) {
 	}
 	_, err = io.Copy(tmpFile, resp.Body)
 	if err != nil {
+		tmpFile.Close()
 		return "", err
 	}
 	tmpFile.Close()
-	logMessage("File downloaded to temporary location")
 	return tmpFile.Name(), nil
 }
 
 func unpackPackage(filePath, packageName string) error {
 	destDir := filepath.Join(buildInstallDir, packageName)
-	logMessage("Unpacking package into " + destDir)
-	if err := os.MkdirAll(destDir, os.ModePerm); err != nil {
+	err := os.MkdirAll(destDir, os.ModePerm)
+	if err != nil {
 		return err
 	}
 	f, err := os.Open(filePath)
@@ -87,7 +82,8 @@ func unpackPackage(filePath, packageName string) error {
 		target := filepath.Join(destDir, header.Name)
 		switch header.Typeflag {
 		case tar.TypeDir:
-			if err := os.MkdirAll(target, os.FileMode(header.Mode)); err != nil {
+			err := os.MkdirAll(target, os.FileMode(header.Mode))
+			if err != nil {
 				return err
 			}
 		case tar.TypeReg:
@@ -95,36 +91,34 @@ func unpackPackage(filePath, packageName string) error {
 			if err != nil {
 				return err
 			}
-			if _, err := io.Copy(outFile, tr); err != nil {
+			_, err = io.Copy(outFile, tr)
+			if err != nil {
 				outFile.Close()
 				return err
 			}
 			outFile.Close()
 		}
 	}
-	logMessage("Unpacking completed")
 	return nil
 }
 
 func executeBuildCommands(commands []string, packageName string) error {
 	packagePath := filepath.Join(buildInstallDir, packageName)
 	for _, commandStr := range commands {
-		logMessage("Executing build command: " + commandStr)
 		cmd := exec.Command("sh", "-c", commandStr)
 		cmd.Dir = packagePath
 		output, err := cmd.CombinedOutput()
 		if err != nil {
 			return fmt.Errorf("command '%s' failed: %s", commandStr, string(output))
 		}
-		logMessage("Command output: " + string(output))
 	}
 	return nil
 }
 
 func saveInstalledPackage(name string, m *manifest.Manifest) error {
 	packagePath := filepath.Join(buildInstallDir, name)
-	logMessage("Saving manifest to " + packagePath)
-	if err := os.MkdirAll(packagePath, os.ModePerm); err != nil {
+	err := os.MkdirAll(packagePath, os.ModePerm)
+	if err != nil {
 		return err
 	}
 	jsonData, err := json.MarshalIndent(m, "", "  ")
@@ -135,31 +129,30 @@ func saveInstalledPackage(name string, m *manifest.Manifest) error {
 }
 
 func InstallPackage(name string) error {
-	logMessage("Fetching manifest for package " + name)
 	m, err := manifest.FetchManifest(name)
 	if err != nil {
 		return fmt.Errorf("failed to fetch manifest: %w", err)
 	}
 	if strings.ToLower(m.Mode) == "bin" {
-		logMessage("Installing in binary mode")
 		platformKey := runtime.GOOS + "_" + runtime.GOARCH
-		binaryURL, ok := m.Binaries[platformKey]
+		binaryInfo, ok := m.Binaries[platformKey]
 		if !ok {
 			return fmt.Errorf("no binary available for platform %s", platformKey)
 		}
-		packageFile, err := downloadFile(binaryURL)
+		packageFile, err := downloadFile(binaryInfo.URL)
 		if err != nil {
 			return fmt.Errorf("failed to download binary: %w", err)
 		}
 		defer os.Remove(packageFile)
-		checksum, err := computeChecksum(packageFile)
+		computedChecksum, err := computeChecksum(packageFile)
 		if err != nil {
 			return fmt.Errorf("failed to compute checksum: %w", err)
 		}
-		if checksum != m.Checksum {
-			return fmt.Errorf("checksum mismatch: expected %s, got %s", m.Checksum, checksum)
+		if computedChecksum != binaryInfo.Checksum {
+			return fmt.Errorf("checksum mismatch: expected %s, got %s", binaryInfo.Checksum, computedChecksum)
 		}
-		if err := os.MkdirAll(binInstallDir, os.ModePerm); err != nil {
+		err = os.MkdirAll(binInstallDir, os.ModePerm)
+		if err != nil {
 			return err
 		}
 		destPath := filepath.Join(binInstallDir, m.Name)
@@ -167,37 +160,58 @@ func InstallPackage(name string) error {
 		if err != nil {
 			return err
 		}
-		if err := ioutil.WriteFile(destPath, data, 0755); err != nil {
+		err = ioutil.WriteFile(destPath, data, 0755)
+		if err != nil {
 			return err
 		}
-		logMessage("Binary package " + m.Name + " installed to " + destPath)
+		fmt.Printf("Binary package %s installed in %s\n", m.Name, destPath)
 		return nil
 	} else if strings.ToLower(m.Mode) == "build" {
-		logMessage("Installing in build mode")
 		packageFile, err := downloadFile(m.Source)
 		if err != nil {
 			return fmt.Errorf("failed to download package: %w", err)
 		}
 		defer os.Remove(packageFile)
-		checksum, err := computeChecksum(packageFile)
+		computedChecksum, err := computeChecksum(packageFile)
 		if err != nil {
 			return fmt.Errorf("failed to compute checksum: %w", err)
 		}
-		if checksum != m.Checksum {
-			return fmt.Errorf("checksum mismatch: expected %s, got %s", m.Checksum, checksum)
+		if computedChecksum != m.Checksum {
+			return fmt.Errorf("checksum mismatch: expected %s, got %s", m.Checksum, computedChecksum)
 		}
-		if err := unpackPackage(packageFile, name); err != nil {
+		err = unpackPackage(packageFile, name)
+		if err != nil {
 			return fmt.Errorf("failed to unpack package: %w", err)
 		}
 		if len(m.Build) > 0 {
-			if err := executeBuildCommands(m.Build, name); err != nil {
+			err = executeBuildCommands(m.Build, name)
+			if err != nil {
 				return fmt.Errorf("build command error: %w", err)
 			}
 		}
-		if err := saveInstalledPackage(name, m); err != nil {
+		err = saveInstalledPackage(name, m)
+		if err != nil {
 			return fmt.Errorf("failed to save manifest: %w", err)
 		}
-		logMessage("Build package " + m.Name + " installed successfully")
+		if name == "choochoo-build" {
+			destDir := filepath.Join(paths.BaseDir(), "bin")
+			err = os.MkdirAll(destDir, os.ModePerm)
+			if err != nil {
+				return err
+			}
+			srcBinary := filepath.Join(buildInstallDir, name, "choochoo")
+			targetBinary := filepath.Join(destDir, "choochoo")
+			data, err := ioutil.ReadFile(srcBinary)
+			if err != nil {
+				return fmt.Errorf("failed to read built binary: %w", err)
+			}
+			err = ioutil.WriteFile(targetBinary, data, 0755)
+			if err != nil {
+				return fmt.Errorf("failed to write binary to %s: %w", targetBinary, err)
+			}
+			fmt.Printf("Binary choochoo installed in %s\n", targetBinary)
+		}
+		fmt.Printf("Build package %s installed successfully\n", m.Name)
 		return nil
 	}
 	return errors.New("unknown package mode")
@@ -205,26 +219,25 @@ func InstallPackage(name string) error {
 
 func RemovePackage(name string) error {
 	packagePath := filepath.Join(buildInstallDir, name)
-	logMessage("Removing package " + name + " from " + packagePath)
 	if _, err := os.Stat(packagePath); os.IsNotExist(err) {
 		return errors.New("package not found")
 	}
-	if err := os.RemoveAll(packagePath); err != nil {
+	err := os.RemoveAll(packagePath)
+	if err != nil {
 		return fmt.Errorf("failed to remove package: %w", err)
 	}
-	logMessage("Package " + name + " removed successfully")
 	return nil
 }
 
 func UpdatePackage(name string) error {
-	logMessage("Updating package " + name)
-	if err := RemovePackage(name); err != nil {
+	err := RemovePackage(name)
+	if err != nil {
 		return fmt.Errorf("failed to remove package for update: %w", err)
 	}
-	if err := InstallPackage(name); err != nil {
-		return fmt.Errorf("failed to install package during update: %w", err)
+	err = InstallPackage(name)
+	if err != nil {
+		return fmt.Errorf("failed to install package: %w", err)
 	}
-	logMessage("Package " + name + " updated successfully")
 	return nil
 }
 
diff --git a/pkg/manifest/.DS_Store b/pkg/manifest/.DS_Store
new file mode 100644
index 0000000..5008ddf
Binary files /dev/null and b/pkg/manifest/.DS_Store differ
diff --git a/pkg/manifest/manifest.go b/pkg/manifest/manifest.go
index 107d10f..4977f4a 100644
--- a/pkg/manifest/manifest.go
+++ b/pkg/manifest/manifest.go
@@ -9,15 +9,20 @@ import (
 	"train/pkg/config"
 )
 
+type BinaryInfo struct {
+	URL      string `json:"url"`
+	Checksum string `json:"checksum"`
+}
+
 type Manifest struct {
-	Name         string            `json:"name"`
-	Version      string            `json:"version"`
-	Mode         string            `json:"mode"`
-	Source       string            `json:"source"`
-	Checksum     string            `json:"checksum"`
-	Dependencies []string          `json:"dependencies"`
-	Build        []string          `json:"build"`
-	Binaries     map[string]string `json:"binaries"`
+	Name         string                `json:"name"`
+	Version      string                `json:"version"`
+	Mode         string                `json:"mode"`
+	Source       string                `json:"source"`
+	Checksum     string                `json:"checksum"`
+	Dependencies []string              `json:"dependencies"`
+	Build        []string              `json:"build"`
+	Binaries     map[string]BinaryInfo `json:"binaries"`
 }
 
 func FetchManifest(name string) (*Manifest, error) {