Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.

 
 IMPORTANT: Before adding those plug-ins to your commercial project, please check licenses for each plugin. 

 LittleCMS core is released under MIT, but plug-ins may be released under other license. fast_float and threaded are GPL3