PyPA specifications

This is a list of currently active interoperability specifications maintained by the Python Packaging Authority. The process for updating these standards, and for proposing new ones, is documented on pypa.io.

Package Distribution Metadata

• Package name normalization
• Core metadata specifications
• Version specifiers
• Dependency specifiers
• Declaring build system dependencies
• Declaring project metadata
• Platform compatibility tags

Package Installation Environment Metadata

• Recording installed projects
• Entry points specification
• Recording the Direct URL Origin of installed distributions
• Direct URL Data Structure
• Python Virtual Environments
• Externally Managed Environments

Package Distribution File Formats

• Source distribution format
• Binary distribution format

Package Index Interfaces

• The .pypirc file
• Simple repository API