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The .meta file describes properties of a downloadable extension (see eggs tutorial for an explanation of extensions and meta files).
The following properties are supported:
A short description of the extension (required).
The author, optionally with an e-mail address, if desired (required).
The maintainer, if not identical to the author.
(files STRING ...)
The names of all files that should be contained in the egg (required).
The license under which the code is released. Please make sure you use the proper license if you package code written by others (required). Read eggs licencing for details on how to format this string!
A category under which the egg should be listed on the egg-index page at http://www.call-with-current-continuation.org/eggs/index.html (required).
Currently the set of categories is fixed, use one of:
code-generation: Code generation crypt: Cryptography data: Algorithms and data-structures db: Databases debugging: Debugging tools doc-tools: Documentation tools egg-tools: Egg tools ffi: Interfacing to other languages graphics: Graphics io: Input/Output lang-exts: Language extensions logic: Logic programming macros: Macros and meta-syntax math: Mathematical libraries misc: Miscellaneous net: Networking oop: Object-oriented programming os: OS interface parsing: Data formats and parsing sound: Sound related stuff testing: Unit-testing tools: Command line tools ui: User interface toolkits web: Web programming xml: XML processing
(needs EXTENSION-ID ...)
Any extensions needed to build and use this extension. This should normally be the raw extension-identifier, the same that you would use in a require-extension form. Alternatively, EXTENSION-ID may be an arbitrary Scheme expression that is evaluated and should return a list of extension-ids. This is intended to test the executing system for particular platform- or installation-specific features before computing a set of required extensions to be available before the installation of the original extension commences.
(depends EXT ...)
Similar to needs, but EXT may also be of the form (EXTENSIONNAME VERSION) to specify a particular version of an extension this extension depends on.
(test-depends EXT ...)
Specifies dependencies that are required to run the included test-suite.
Marks this extension as being "hidden", that is: it is available for download and the documentation page is generated, but it will not appear in the official list (mainly intended for preliminary eggs and testing).
(platform ID ...)
Identifies the platforms where this extension can be used. ID ... should be one or more feature IDs, i.e. symbols returned by build-platform, software-version, software-type, machine-type and machine-byte-order. If a particular type of feature ID is not given, it implies that this egg is portable across all platforms that are described by this type.