first commit

modules.nix

@@ -0,0 +1,95 @@
+{ config, lib, pkgs, k8s, ... }:
+
+with lib;
+with import ./lib.nix { inherit pkgs lib; };
+
+let
+  globalConfig = config;
+
+  evalK8SModule = {module, name, configuration}: evalModules {
+    modules = [
+      ./kubernetes.nix ./modules.nix module configuration
+    ] ++ config.kubernetes.defaultModuleConfiguration;
+    args = {
+      inherit pkgs k8s name;
+    };
+  };
+
+  prefixResources = resources: serviceName:
+    mapAttrs (groupName: resources:
+      mapAttrs' (name: resource: nameValuePair "${serviceName}-${name}" resource) resources
+    ) resources;
+in {
+  options.kubernetes.defaultModuleConfiguration = mkOption {
+    description = "Default configuration for kubernetes modules";
+    type = types.listOf types.attrs;
+    default = {};
+  };
+
+  options.kubernetes.moduleDefinitions = mkOption {
+    description = "Attribute set of module definitions";
+    default = {};
+    type = types.attrsOf (types.submodule ({name, ...}: {
+      options = {
+        name = mkOption {
+          description = "Module definition name";
+          type = types.str;
+          default = name;
+        };
+
+        module = mkOption {
+          description = "Module definition";
+        };
+      };
+    }));
+  };
+
+  options.kubernetes.modules = mkOption {
+    description = "Attribute set of module definitions";
+    default = {};
+    type = types.attrsOf (types.submodule ({config, name, ...}: {
+      options = {
+        name = mkOption {
+          description = "Module name";
+          type = types.str;
+          default = name;
+        };
+
+        configuration = mkOption {
+          description = "Module configuration";
+          type = types.attrs;
+          default = {};
+        };
+
+        module = mkOption {
+          description = "Name of the module to use";
+          type = types.str;
+        };
+
+        evaledModule = mkOption {
+          description = "Evaluated config";
+          internal = true;
+        };
+      };
+
+      config = {
+        evaledModule = (evalK8SModule {
+          module = globalConfig.kubernetes.moduleDefinitions.${config.module}.module;
+          inherit (config) name configuration;
+        });
+      };
+    }));
+  };
+
+  config = {
+    kubernetes.resources = mkMerge (
+      mapAttrsToList (name: module:
+        prefixResources (moduleToAttrs module.evaledModule.config.kubernetes.resources) module.name
+      ) config.kubernetes.modules
+    );
+
+    kubernetes.defaultModuleConfiguration = [{
+      config.kubernetes.version = mkDefault config.kubernetes.version;
+    }];
+  };
+}