Dependency Resolution Task

Objective

Analyze, resolve, and manage complex dependency relationships across multiple platforms, ensuring consistent and reliable installation of all required components with proper version management and conflict resolution.

Task Overview

This task handles the intricate process of dependency analysis, version resolution, platform-specific mapping, and conflict resolution to ensure that all required dependencies are correctly identified, resolved, and installed across different target platforms.

Process Steps

1. Dependency Discovery & Analysis

Purpose: Identify and catalog all project dependencies with their relationships

Actions:

• Parse package manager files to extract direct dependencies

• Analyze transitive dependencies and their version requirements

• Identify system-level dependencies and runtime requirements

• Discover optional dependencies and feature-specific requirements

• Map dependencies to their platform-specific equivalents

• Analyze dependency licenses and compatibility requirements

Output: Comprehensive dependency graph with metadata

2. Version Constraint Resolution

Purpose: Resolve version conflicts and establish compatible version sets

Actions:

• Analyze version constraints from all dependency sources

• Apply semantic versioning rules for compatibility checking

• Resolve version conflicts using constraint satisfaction algorithms

• Identify and handle breaking changes between versions

• Establish minimum viable version sets for each platform

• Create version lock files for reproducible installations

Output: Resolved version specifications for all dependencies

3. Platform-Specific Mapping

Purpose: Map dependencies to platform-specific packages and installation methods

Actions:

• Map generic dependency names to platform-specific package names

• Identify platform-specific installation commands and procedures

• Handle architecture-specific variations (x64, ARM64, etc.)

• Map to appropriate package managers for each platform

• Identify platform-specific configuration requirements

• Handle platform-specific dependency variations and alternatives

Output: Platform-specific dependency installation specifications

4. Conflict Detection & Resolution

Purpose: Identify and resolve dependency conflicts before installation

Actions:

• Detect version conflicts between direct and transitive dependencies

• Identify incompatible dependency combinations

• Analyze circular dependency relationships

• Detect platform-specific compatibility issues

• Resolve conflicts through version negotiation or alternative selection

• Create conflict resolution strategies and fallback options

Output: Conflict-free dependency resolution plan

5. Installation Strategy Planning

Purpose: Create optimized installation strategies for each platform

Actions:

• Determine optimal installation order based on dependencies

• Group dependencies for batch installation where possible

• Plan parallel installation strategies for independent dependencies

• Create rollback strategies for failed dependency installations

• Establish validation procedures for each dependency

• Plan caching strategies for repeated installations

Output: Comprehensive installation strategy with optimization

Dependency Analysis Framework

1. Dependency Classification System

{
  "dependency_types": {
    "runtime": {
      "description": "Required for application execution",
      "criticality": "high",
      "installation_phase": "pre_application"
    },
    "build": {
      "description": "Required for building the application",
      "criticality": "medium",
      "installation_phase": "build_time"
    },
    "development": {
      "description": "Required for development activities",
      "criticality": "low",
      "installation_phase": "optional"
    },
    "system": {
      "description": "System-level dependencies",
      "criticality": "high",
      "installation_phase": "pre_runtime"
    },
    "optional": {
      "description": "Feature-specific optional dependencies",
      "criticality": "low",
      "installation_phase": "post_application"
    }
  }
}

2. Version Resolution Algorithm

def resolve_versions(dependencies, constraints):
    """
    Resolve dependency versions using constraint satisfaction
    """
    # Build constraint graph
    constraint_graph = build_constraint_graph(dependencies, constraints)
    
    # Apply semantic versioning rules
    for dep in dependencies:
        apply_semver_constraints(dep, constraint_graph)
    
    # Resolve conflicts using backtracking
    resolution = backtrack_resolve(constraint_graph)
    
    # Validate resolution
    if not validate_resolution(resolution):
        return resolve_with_alternatives(dependencies, constraints)
    
    return resolution

def build_constraint_graph(dependencies, constraints):
    """
    Build a graph of version constraints
    """
    graph = DependencyGraph()
    
    for dep in dependencies:
        # Add direct constraints
        graph.add_constraint(dep.name, dep.version_spec)
        
        # Add transitive constraints
        for transitive in dep.transitive_deps:
            graph.add_constraint(transitive.name, transitive.version_spec)
    
    return graph

3. Platform Mapping System

{
  "platform_mappings": {
    "nodejs": {
      "windows": {
        "package_name": "nodejs",
        "package_manager": "chocolatey",
        "install_command": "choco install nodejs -y",
        "verify_command": "node --version",
        "minimum_version": "18.0.0"
      },
      "linux": {
        "ubuntu": {
          "package_name": "nodejs",
          "package_manager": "apt",
          "install_command": "sudo apt-get install -y nodejs npm",
          "verify_command": "node --version && npm --version"
        },
        "centos": {
          "package_name": "nodejs",
          "package_manager": "yum",
          "install_command": "sudo yum install -y nodejs npm",
          "verify_command": "node --version && npm --version"
        }
      },
      "macos": {
        "package_name": "node",
        "package_manager": "homebrew",
        "install_command": "brew install node",
        "verify_command": "node --version && npm --version"
      }
    }
  }
}

4. Conflict Resolution Strategies

class ConflictResolver:
    def __init__(self):
        self.resolution_strategies = [
            self.try_version_negotiation,
            self.try_alternative_packages,
            self.try_compatibility_layers,
            self.try_isolation_strategies
        ]
    
    def resolve_conflict(self, conflict):
        """
        Attempt to resolve a dependency conflict
        """
        for strategy in self.resolution_strategies:
            resolution = strategy(conflict)
            if resolution and self.validate_resolution(resolution):
                return resolution
        
        # If no automatic resolution possible, require user intervention
        return self.request_user_resolution(conflict)
    
    def try_version_negotiation(self, conflict):
        """
        Try to find a version that satisfies all constraints
        """
        compatible_versions = self.find_compatible_versions(
            conflict.package,
            conflict.constraints
        )
        
        if compatible_versions:
            return compatible_versions[0]  # Return best match
        
        return None
    
    def try_alternative_packages(self, conflict):
        """
        Try to find alternative packages that provide the same functionality
        """
        alternatives = self.find_alternatives(conflict.package)
        
        for alt in alternatives:
            if self.check_compatibility(alt, conflict.constraints):
                return alt
        
        return None

Platform-Specific Dependency Handling

1. Windows Dependency Management

function Install-WindowsDependencies {
    param(
        [array]$Dependencies
    )
    
    # Check for package managers
    $packageManagers = @()
    
    if (Get-Command choco -ErrorAction SilentlyContinue) {
        $packageManagers += "chocolatey"
    }
    
    if (Get-Command winget -ErrorAction SilentlyContinue) {
        $packageManagers += "winget"
    }
    
    # Install dependencies using available package managers
    foreach ($dep in $Dependencies) {
        $installed = $false
        
        foreach ($pm in $packageManagers) {
            try {
                switch ($pm) {
                    "chocolatey" {
                        choco install $dep.ChocolateyName -y
                        $installed = $true
                        break
                    }
                    "winget" {
                        winget install $dep.WingetId
                        $installed = $true
                        break
                    }
                }
            }
            catch {
                Write-Warning "Failed to install $($dep.Name) using $pm"
                continue
            }
        }
        
        if (-not $installed) {
            throw "Failed to install dependency: $($dep.Name)"
        }
    }
}

2. Linux Dependency Management

install_linux_dependencies() {
    local dependencies=("$@")
    
    # Detect package manager
    if command -v apt-get >/dev/null 2>&1; then
        PACKAGE_MANAGER="apt"
        UPDATE_CMD="sudo apt-get update"
        INSTALL_CMD="sudo apt-get install -y"
    elif command -v yum >/dev/null 2>&1; then
        PACKAGE_MANAGER="yum"
        UPDATE_CMD="sudo yum update -y"
        INSTALL_CMD="sudo yum install -y"
    elif command -v pacman >/dev/null 2>&1; then
        PACKAGE_MANAGER="pacman"
        UPDATE_CMD="sudo pacman -Sy"
        INSTALL_CMD="sudo pacman -S --noconfirm"
    else
        echo "Error: No supported package manager found"
        return 1
    fi
    
    # Update package database
    echo "Updating package database..."
    $UPDATE_CMD
    
    # Install dependencies
    for dep in "${dependencies[@]}"; do
        echo "Installing $dep..."
        
        # Get platform-specific package name
        local package_name=$(get_package_name "$dep" "$PACKAGE_MANAGER")
        
        if ! $INSTALL_CMD "$package_name"; then
            echo "Failed to install $dep"
            return 1
        fi
        
        # Verify installation
        if ! verify_dependency "$dep"; then
            echo "Installation verification failed for $dep"
            return 1
        fi
    done
}

3. macOS Dependency Management

install_macos_dependencies() {
    local dependencies=("$@")
    
    # Ensure Homebrew is available
    if ! command -v brew >/dev/null 2>&1; then
        echo "Installing Homebrew..."
        /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
    fi
    
    # Update Homebrew
    echo "Updating Homebrew..."
    brew update
    
    # Install dependencies
    for dep in "${dependencies[@]}"; do
        echo "Installing $dep..."
        
        # Get Homebrew formula name
        local formula=$(get_homebrew_formula "$dep")
        
        if ! brew install "$formula"; then
            # Try cask if formula fails
            if ! brew install --cask "$formula"; then
                echo "Failed to install $dep"
                return 1
            fi
        fi
        
        # Verify installation
        if ! verify_dependency "$dep"; then
            echo "Installation verification failed for $dep"
            return 1
        fi
    done
}

Quality Assurance & Validation

Dependency Validation Framework

class DependencyValidator:
    def __init__(self):
        self.validation_rules = [
            self.validate_version_compatibility,
            self.validate_platform_support,
            self.validate_license_compatibility,
            self.validate_security_requirements
        ]
    
    def validate_dependency_set(self, dependencies):
        """
        Validate a complete set of resolved dependencies
        """
        validation_results = []
        
        for rule in self.validation_rules:
            result = rule(dependencies)
            validation_results.append(result)
        
        return self.aggregate_validation_results(validation_results)
    
    def validate_version_compatibility(self, dependencies):
        """
        Ensure all dependency versions are compatible
        """
        conflicts = []
        
        for dep in dependencies:
            for other_dep in dependencies:
                if dep != other_dep and self.has_version_conflict(dep, other_dep):
                    conflicts.append((dep, other_dep))
        
        return ValidationResult(
            passed=len(conflicts) == 0,
            issues=conflicts,
            severity="high" if conflicts else "none"
        )

Installation Verification

verify_installation() {
    local dependency="$1"
    local verification_commands=()
    
    # Load verification commands for dependency
    case "$dependency" in
        "nodejs")
            verification_commands=("node --version" "npm --version")
            ;;
        "python")
            verification_commands=("python --version" "pip --version")
            ;;
        "docker")
            verification_commands=("docker --version" "docker info")
            ;;
        *)
            echo "No verification commands defined for $dependency"
            return 1
            ;;
    esac
    
    # Run verification commands
    for cmd in "${verification_commands[@]}"; do
        if ! eval "$cmd" >/dev/null 2>&1; then
            echo "Verification failed: $cmd"
            return 1
        fi
    done
    
    echo "✓ $dependency verified successfully"
    return 0
}

Integration Points

Input Sources

• Project analysis results with dependency information

• Package manager configuration files

• Platform-specific package databases

• User preferences and constraints

Output Consumers

• Script generation system (receives resolved dependencies)

• Installation orchestration system

• Validation and testing frameworks

• Documentation generation systems

Error Handling & Recovery

Common Dependency Issues

• Version conflicts: Multiple packages require incompatible versions

• Missing dependencies: Required packages not available on target platform

• Circular dependencies: Packages depend on each other creating cycles

• Platform incompatibility: Dependencies not supported on target platform

• Network failures: Package downloads fail during installation

Recovery Strategies

• Alternative resolution: Find alternative packages or versions

• Manual intervention: Request user guidance for complex conflicts

• Graceful degradation: Continue with optional dependencies missing

• Rollback capability: Undo partial installations on failure

• Retry mechanisms: Automatic retry with exponential backoff

Performance Optimization

Resolution Performance

• Caching: Cache dependency resolution results

• Parallel processing: Resolve independent dependencies concurrently

• Incremental updates: Only re-resolve changed dependencies

• Heuristic optimization: Use heuristics to guide resolution algorithms

• Lazy evaluation: Defer expensive operations until needed

Installation Performance

• Batch operations: Group related installations together

• Parallel installation: Install independent dependencies concurrently

• Download optimization: Pre-download packages before installation

• Local caching: Cache downloaded packages for reuse

• Progress optimization: Provide accurate progress feedback