chore(example/llm): Give it an exe name, and expand README re: nix run

example/llm/README.md

@@ -1,7 +1,15 @@
 # Running local LLM using ollama and open-webui
 
-While `services-flake` is generally used for running services in a *development* project, typically under a source code checkout, you can also write flakes to derive an end-user app which runs a group of services. 
+While `services-flake` is generally used for running services in a *development* project, typically under a source code checkout, you can also write flakes to derive an end-user app which runs a group of services, which then can be run using `nix run` (or installed using `nix profile install`):
 
-`example/llm` runs two processes ollama and open-webui, while storing the ollama data under `$HOME/.services-flake/ollama`. You can change this path in `flake.nix`.
+```sh
+# You can also use `nix profile install` on this URL, and run `services-flake-llm`
+nix run github:juspay/services-flake?dir=example/llm
+```
 
-By default, a single model (`llama2-uncensored`) is downloaded. You can modify this in `flake.nix` as well.
+## Default configuration & models
+
+`example/llm` runs two processes ollama and open-webui
+
+- The ollama data is stored under `$HOME/.services-flake/ollama`. You can change this path in `flake.nix` by setting the `dataDir` option.
+- A single model (`llama2-uncensored`) is automatically downloaded. You can modify this in `flake.nix` as well by setting the `models` option. You can also download models in the open-webui UI.

example/llm/flake.nix

@@ -13,7 +13,9 @@
       inputs.process-compose-flake.flakeModule
     ];
     perSystem = { self', pkgs, lib, ... }: {
-      process-compose."default" = pc: {
+      packages.default = self'.packages.services-flake-llm;
+
+      process-compose."services-flake-llm" = pc: {
         imports = [
           inputs.services-flake.processComposeModules.default
         ];