No more cocoapods

BUILDING.md

@@ -1,6 +1,6 @@
 Notes on how the framework is built.  There is a certain amount of messing
 around to comply with the idiosyncracies of / my lack of patience with
-Swift Package Manager & Cocoapods.
+Swift Package Manager.
 
 ## Components 
 
@@ -39,48 +39,20 @@ Everything is fine.
 
 ## CocoaPods
 
-CRuby is a git submodule of RubyGateway, refer to it via Xcode options.
-
-CocoaPods seems to be wedded to 'one module per pod [per target?]'.  I
-don't want a separate pod for RubyGatewayHelpers.  But, unlike SPM, CP is
-happy to build mixed Swift-ObjC modules.  So the RubyGatewayHelpers code
-is just built as part of RubyGateway.
-
-But, RubyGateway still does `import RubyGatewayHelpers`.  Luckily nothing is
-explicitly namespaced, so we just need to make the import pass.  This happens
-by creating a dummy module (empty modulemap) during pod install.
-
-Unfortunately, and this is probably not CP's fault, doing it this way makes
-it impossible to keep the RubyGatewayHelpers header file out of the RubyGateway
-module map, which means users importing RubyGateway also get the `rbg_` symbols
-polluting their autocomplete.
-
-Really want to edit the module map after the build is complete, could probably
-do via `script_phase` but not sure I want the warning on install / overhead of
-maintaining the files.
-
-Everything is just about OK.
+Too broken and poorly understood in 2024; RIP.
 
 ## Ruby 3 notes
 
-* The Ruby3 Xcode project has include paths and compiler flag settings for Ruby 3.
-* It assumes ~/.rbenv
-* Need to configure the CRuby submodule too for that same rbenv
-
 Spell to get Swift docs for CRuby if Xcode can't do it:
 ```shell
 jazzy --min-acl private --module CRuby --swift-build-tool symbolgraph --build-tool-arguments -I,/Users/johnf/.rbenv/versions/3.0.0/include/ruby-3.0.0/x86_64-darwin20,-I,/Users/johnf/.rbenv/versions/3.0.0/include/ruby-3.0.0,-I,$(pwd),-Xcc,-fdeclspec
 ```
 
 ## Releasing
 
-* Update podspec, changelog, .jazzy.yaml, TODO, README, LICENSE if year changed.
+* Update changelog, .jazzy.yaml, TODO, README, LICENSE if year changed.
 * Update docs if needed, separate commit.
 * Commit + tag + push with `--tags`.  Check CI.
-* `pod spec lint` -- *not* `pod lib lint`
-  * `pod cache clean 'RubyGateway' --all` if you mess up the tag + have to repush it
-* `pod trunk me` -- if bad then `pod trunk register` until good
-* `pod trunk push`
 * Github code -> releases -> tags -> 'Create release'
   * Title is just release triple
   * Paste in changelog section

README.md

@@ -9,7 +9,6 @@ Distributed under the MIT license, see LICENSE.
 [![CI](https://travis-ci.org/johnfairh/RubyGateway.svg?branch=master)](https://travis-ci.org/johnfairh/RubyGateway)
 [![codecov](https://codecov.io/gh/johnfairh/RubyGateway/branch/master/graph/badge.svg)](https://codecov.io/gh/johnfairh/RubyGateway)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
-![Pod](https://cocoapod-badges.herokuapp.com/v/RubyGateway/badge.png)
 ![Platforms](https://img.shields.io/badge/platform-macOS%20%7C%20linux-lightgrey.svg)
 ![License](https://cocoapod-badges.herokuapp.com/l/RubyGateway/badge.png)
 
@@ -188,11 +187,6 @@ Swift package manager for macOS or Linux:
 .package(url: "https://github.com/johnfairh/RubyGateway", from: "6.0.0")
 ```
 
-CocoaPods for macOS:
-```
-pod 'RubyGateway'
-```
-
 ### Configuring CRuby
 
 CRuby is the glue between RubyGateway and your Ruby installation.  It is a