feat: Add process-compose defaults module (#466)

Author: shivaraj-bh

example/llm/flake.nix

@@ -19,10 +19,6 @@
         imports = [
           inputs.services-flake.processComposeModules.default
         ];
-        cli = {
-          # Disable the process-compose HTTP server
-          options.no-server = true;
-        };
         services = let dataDirBase = "$HOME/.services-flake/llm"; in {
           # Backend service to perform inference on LLM models
           ollama."ollama1" = {

flake.nix

@@ -1,7 +1,7 @@
 {
   description = "declarative, composable, and reproducible services for Nix development environment";
   outputs = _: {
-    processComposeModules.default = ./nix/services;
+    processComposeModules.default = ./nix/process-compose;
 
     templates.default = {
       description = "Example flake using process-compose-flake";

nix/process-compose/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ../services
+    ./defaults.nix
+  ];
+}

nix/process-compose/defaults.nix

@@ -0,0 +1,8 @@
+# Default process-compose cli settings
+{ pkgs, lib, ... }:
+{
+  cli = {
+    # Disable the process-compose HTTP server
+    options.no-server = lib.mkDefault true;
+  };
+}

test/flake.nix

@@ -32,6 +32,8 @@
                 ];
                 cli = {
                   options = {
+                    # HTTP server disabled by default but we need it here for tests
+                    no-server = false;
                     use-uds = true;
                     unix-socket = "pc-${name}.sock";
                   };