When fixing references to regular dylibs, it is sufficient to search for a file with the same base name, e.g., `libpoppler.56.dylib`. However, if the broken reference is to a framework, we also have to take into account preceding path components to find a suitable match. Framework references (according to the `dyld` man page) come in two flavors: - `XXX.framework/Versions/YYY/XXX` (with version) - `XXX.framework/XXX` (without version) The change here is to detect these patterns and to make sure that the fixed library reference has the same suffix as the broken one. Prior to this fix, a broken framework reference (if originating in a sister framework) to `QtXml.framework/Versions/5/QtXml` would have been rewritten to `<qt5-keg>/lib/QtXml.framework/QtXml`. In practice, this mostly works, but is technically incorrect and thus creates problems like in Homebrew/homebrew#42191. With this fix, the framework reference is correctly rewritten to `<qt5-keg>/lib/QtXml.framework/Versions/5/QtXml`. Closes Homebrew/homebrew#45494. Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Homebrew's Formula API
This is the (partially) documented public API for Homebrew.
The main class you should look at is the {Formula} class (and classes linked from there). That's the class that's used to create Homebrew formulae (i.e. package descriptions). Assume anything else you stumble upon is private.
You may also find the Formula Cookbook and Ruby Style Guide helpful in creating formulae.
Good luck!