Swift Package Dependencies Updater

A bash script that automatically updates Swift Package Manager dependencies to their latest versions by fetching information from the GitHub API.

Features

• Automatically detects GitHub dependencies in Package.swift files
• Fetches the latest release versions from GitHub API
• Falls back to latest tags if no releases are available
• Handles both HTTPS and SSH GitHub URLs (converts SSH to HTTPS for API access)
• Normalizes version numbers (removes 'v' prefix if present)
• Creates a backup and safely updates the original file

Usage

./update_dependencies.sh <path_to_Package.swift>

Example

./update_dependencies.sh /path/to/your/Package.swift

Requirements

• bash
• curl (for GitHub API calls)
• sed (for file modifications)
• grep (for pattern matching)

How it works

1. Parse Package.swift: The script reads the Package.swift file and identifies GitHub dependencies using regex patterns.

2. Extract Repository Information: For each dependency, it extracts the repository URL and current version.

3. Fetch Latest Version: It queries the GitHub API to get the latest release. If no releases are found, it falls back to the latest tag.

4. Version Comparison: The script compares the current version with the latest version (normalizing both by removing 'v' prefixes).

5. Update File: If a newer version is available, it updates the Package.swift file with the new version.

Supported URL Formats

• https://github.com/owner/repo.git
• https://github.com/owner/repo
• git@github.com:owner/repo.git

Example Output

Updating dependencies in Package.swift...

Processing: https://github.com/vapor/vapor.git
  Current version: 4.115.0
  Latest version: 4.115.0
  ✓ Already up to date

Processing: https://github.com/vapor/fluent.git
  Current version: 4.11.0
  Latest version: 4.12.0
  ✓ Updating to 4.12.0

Processing: git@github.com:owner/repo.git
  Current version: 1.0.0
  (Converted SSH URL to HTTPS for API access)
  Latest version: 1.2.0
  ✓ Updating to 1.2.0

Dependencies update completed!
Updated file: Package.swift

Notes

• The script creates a temporary backup during the update process
• SSH URLs are automatically converted to HTTPS format for GitHub API access
• GitHub API rate limits may apply for repositories with many dependencies

Error Handling

• If a repository is not found, private, or has no releases/tags, the script will display an error message and continue with other dependencies
• If the GitHub API is unavailable, individual dependency updates will fail but the script will continue
• The original file is only replaced if the update process completes successfully