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+# Adjust the meaning of `init.luau`
+
+## Summary
+
+We will redefine `foo/init.luau` to be the contents of the module named foo for
+the purpose of resolving relative `require()` calls within its body.
+
+We will do this because a significant portion of our users today rely on the
+idiom that `init.luau` represents the module's contents, especially when using
+Rojo to build for Roblox.
+
+## Motivation
+
+First, consider an example filesystem:
+
+```
+./foo.luau
+./package
+./package/init.luau
+./package/foo.luau
+./package/dependency.luau
+```
+
+Luau maps this filesystem into a module tree.  Module paths largely correspond
+to filesystem paths, but they are distinct ideas.  Given the filesystem above,
+Luau considers the following module paths to be valid:
+
+```
+foo
+package
+package/init
+package/foo
+package/dependency
+```
+
+When Luau is running on a conventional filesystem, we presently offer some
+special behaviour to afford the ability for modules to both contain other
+modules, and for them to themselves export values and types: The module path
+`package` is treated as an alias to `package/init`.
+
+Library authors can use this feature to afford a package hierarchy with a root
+package that exports all of the most important, basic functionality, plus
+submodules that either contain implementation details or additional public APIs.
+
+This feature works well, but it's incompatible with the idiom that Rojo, a
+popular tool in our ecosystem today, employs when building artifacts for Roblox.
+
+This incompatibility stems from how requires are resolved within the body of
+`init.luau`.
+
+Because we consider `package/init` to be an ordinary Luau module, it is
+considered to be rooted at `package`.  Therefore, a relative
+`require('./foo')` call will resolve to `./package/foo.luau` rather than
+`./foo.luau`.
+
+Rojo, by contrast, considers `./package/init.luau` to belong to the containing
+directory.  A developer using Rojo must instead write
+`require('./package/foo')`.  This is only necessary when the script is named
+`init.luau`.
+
+Because of this incompatibility, scripts with require-by-string uses in Rojo
+projects will not work outside of Roblox places and vice versa. Since
+cross-runtime compatibility is an important goal of the require-by-string
+project, we would like to rectify this.
+
+## Design
+
+Luau will no longer consider relative requires from a package `init.luau` file
+to resolve relative to the script itself.  It will instead resolve relative to the
+script's parent, i.e. the folder containing the module.
+
+Secondly, we recognize an unfortunate side effect of this change: code within
+`package/init.luau` is forced to write `require('./package/dependency')` when it
+specifically wants to carry out the ordinary task of importing a subordinate
+module.
+
+We propose to alleviate this with a special import alias `@self` that resolves
+to the current module.
+
+```lua
+-- package/init.luau
+
+local foo = require('./foo')     -- This pulls in the outer foo!
+local foo = require('@self/foo') -- import package/foo
+```
+
+## Drawbacks
+
+On a filesystem, Rojo's behaviour is frankly very weird!  A reader must know the
+name of the current source file in order to know what `require('./foo')` will
+do, and if a developer renames a file to or from `init.luau`, they will be
+forced to rewrite every `require()`.
+
+We can mitigate this with a new lint: If a module is the parent of other
+modules, it is poor style for it to directly import sibling or parent modules.
+Files named `init.luau` should never issue a require that resolves to a sibling
+module.  In our example, we would warn if `package/init.luau` were to
+`require('./foo')` because that reaches outside of its folder.
+
+Further, as require-by-string has been live on Roblox for a little while, there
+is some risk that changing things now will break existing code.  Roblox will use
+live telemetry to assess the impact of this change before we move forward.
+
+## Alternatives
+
+### Patching Rojo
+
+Adjusting Rojo to match what Luau does today without breaking any existing
+application code is tricky and most likely requires something far weirder than
+the change outlined in this RFC.
+
+Crucially, most code written using Rojo predates string-based requires.  All of
+this code must continue to run exactly as-is.
+
+This puts us in quite a bind:
+
+* If we map `foo/init.luau` to an actual `ModuleScript` at `foo/init` in the
+  Roblox data model, then instance-based requires break.  This rules out clever
+      solutions like aliasing modules and compatibility shims.
+* If we don't, then we need some other magic Roblox rule that changes the
+  require resolution rules
+    1. Only for scripts that, on the Rojo side, are named `init.luau`, and
+    2. Only for string-based requires