update readme to represent the more true rust bits

README.md

@@ -92,39 +92,34 @@ Builds are run like:
 
 ---
 
-# arch
-
-1. All github events go in to web/index.php, which sends the event to
-   an exchange named for the full name of the repo (ex: nixos/nixpkgs)
-   in lower case. The exchange is set to "fanout"
-2. build-filter.php creates a queue called build-inputs and binds it
-   to the nixos/nixpkgs exchange. It also creates an exchange,
-   build-jobs, set to fan out. It listens for messages on the
-   build-inputs queue. Issue comments from authorized users on
-   PRs get tokenized and turned in to build instructions. These jobs
-   are then written to the build-jobs exchange.
-3. builder.php creates a queue called `build-inputs-x86_64-linux`, and
-   binds it to the build-jobs exchange. It then listens for build
-   instructions on the `build-inputs-x86_64-linux` queue. For each
-   job, it uses nix-build to run the build instructions. The status
-   result (pass/fail) and the last ten lines of output are then placed
-   in to the `build-results` queue.
-4. poster.php declares the build-results queue, and listens for
-   messages on it. It posts the build status and text output on the PR
-   the build is from.
 
 
-## Getting Started
 
- - you'll need to create the `WORKING_DIR`
- - nix-shell
- - composer install
- - php builder.php
+# Running a builder
 
-The conspicuously missing config.php looks like:
+```
+nix-shell ./shell.nix
+$ cd ofborg
+$ cargo build
+```
+
+```
+cargo build
+```
+
+then copy example.config.json to config.json and edit its vars. Set
+`nix.remote` to an empty string if you're not using the daemon.
+
+Run
+
+```
+./target/debug/builder ./config.json
+```
 
 
 
+## old php stuff...
+
 ```php
 <?php
 
@@ -162,25 +157,3 @@ function gh_client() {
 }
 */
 ```
-
-
-## Getting started on the rust one...
-
-```
-nix-shell ./shell.nix -A rustEnv
-$ cd ofborg
-$ cargo build
-```
-
-```
-cargo build
-```
-
-then copy example.config.json to config.json and edit its vars. Set
-`nix.remote` to an empty string if you're not using the daemon.
-
-Run
-
-```
-./target/debug/builder ./config.json
-```