chore: add example/llm; github workflow to update the example/llm/flake.lock

For context, see:
https://github.com/juspay/services-flake/pull/218#issuecomment-2163874302

.github/workflows/update-flake-lock-ex-llm.yaml

@@ -0,0 +1,40 @@
+name: update-flake-lock-ex-llm
+on:
+  workflow_dispatch: # allows manual triggering
+  schedule:
+    - cron: '0 0 * * 0' # runs weekly on Sunday at 00:00
+
+jobs:
+  update-ex-llm-lock:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate Github App Token
+        uses: navikt/github-app-token-generator@v1
+        id: github-app-token
+        with:
+          app-id: ${{ vars.NIXOS_ASIA_APP_ID }}
+          private-key: ${{ secrets.NIXOS_ASIA_PRIVATE_KEY }}
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - name: Update flake.lock
+        uses: DeterminateSystems/update-flake-lock@main
+        id: update-flake-lock
+        with:
+          commit-msg: "chore(example): Update llm/flake.lock"
+          pr-title: "Update example/llm/flake.lock"
+          pr-body: |
+            Automated changes by the [update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock) GitHub Action.
+
+            ```
+            {{ env.GIT_COMMIT_MESSAGE }}
+            ```
+          pr-labels: |
+            automated
+          path-to-flake-dir: 'example/llm'
+          branch: "update_flake_lock_ex_llm"
+          token: ${{ steps.github-app-token.outputs.token }}
+      - run: "gh pr merge --auto --rebase --delete-branch ${{ steps.update-flake-lock.outputs.pull-request-number }}"
+        env:
+          GH_TOKEN: ${{ github.token }}

example/llm/flake.nix

@@ -0,0 +1,27 @@
+{
+  description = "A collection of services enabling the users to perform inference on LLM models";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    systems.url = "github:nix-systems/default";
+    process-compose-flake.url = "github:Platonic-Systems/process-compose-flake";
+    services-flake.url = "github:juspay/services-flake";
+  };
+  outputs = inputs: inputs.flake-parts.lib.mkFlake { inherit inputs; } {
+    systems = import inputs.systems;
+    imports = [
+      inputs.process-compose-flake.flakeModule
+    ];
+    perSystem = { self', pkgs, lib, ... }: {
+      process-compose."default" = {
+        imports = [
+          inputs.services-flake.processComposeModules.default
+        ];
+        services.ollama."ollama1" = {
+          enable = true;
+          models = [ "llama2-uncensored" ];
+        };
+      };
+    };
+  };
+}

justfile

@@ -10,6 +10,10 @@ changelog:
 ex-simple:
     cd ./example/simple && nix run . --override-input services-flake ../..
 
+# Run example/llm
+ex-llm:
+    cd ./example/llm && nix run . --override-input services-flake ../..
+
 # Run example/share-services
 ex-share-services:
     cd ./example/share-services/pgweb && \