Add builtin-noop generator

In order to define pinned packages without reading
remote services it's possible to use the `builtin-noop`
generator and defines the versions directly on *vars*
attribute.

The `versions` attributes is mandatory in this case
and must be an array of strings.

contrib/autogen/noop_example.yml

@@ -0,0 +1,34 @@
+x11libs:
+  generator: builtin-noop
+  template:
+    engine: helm
+
+  defaults:
+    category: x11-libs
+  packages:
+    - libX11:
+        vars:
+          desc: "X.Org X11 library"
+          versions:
+            - "1.8.1"
+
+        assets:
+          - name: "libX11-{{ .Values.version}}.tar.xz"
+            prefix: https://www.x.org/releases/individual/lib/
+
+    - metatools:
+        category: sys-apps
+        vars:
+          github_user: macaroni-os
+          github_repo: funtoo-metatools
+          homepage: https://github.com/macaroni-os/funtoo-metatools
+          license: Apache-2.0
+          desc: "M.A.R.K. metatools -- autogeneration framework."
+          versions:
+            - 1.3.8_pre20240818
+          snapshot: 3ca77d7dac6b9256e161d0bce47c7f7eb85e6e96
+
+        assets:
+          - name: "{{ .Values.pn }}-{{ .Values.version }}-{{ substr 0 7 .Values.snapshot }}.zip"
+            url: "https://github.com/{{ .Values.github_user }}/{{ .Values.github_repo }}/archive/{{ .Values.snapshot }}.zip"
+

contrib/autogen/templates/metatools.tmpl

@@ -0,0 +1,46 @@
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3+ )
+inherit distutils-r1
+
+DESCRIPTION="{{- .Values.desc }}"
+HOMEPAGE="{{- .Values.homepage }}"
+
+RESTRICT="network-sandbox"
+DEPEND=">=dev-python/subpop-2.0.0[${PYTHON_USEDEP}]"
+RDEPEND="
+	app-arch/unzip
+	>=dev-util/meson-1.2.0
+	dev-python/beautifulsoup[${PYTHON_USEDEP}]
+	dev-python/dict-toolbox[${PYTHON_USEDEP}]
+	>=dev-python/httpx-0.24.0[${PYTHON_USEDEP}]
+	>=dev-python/jinja-3[${PYTHON_USEDEP}]
+	dev-python/packaging[${PYTHON_USEDEP}]
+	dev-python/packaging-legacy[${PYTHON_USEDEP}]
+	dev-python/psutil[${PYTHON_USEDEP}]
+	dev-python/pymongo[${PYTHON_USEDEP}]
+	dev-python/pyyaml[${PYTHON_USEDEP}]
+	dev-python/pyzmq[${PYTHON_USEDEP}]
+	dev-python/rich[${PYTHON_USEDEP}]
+	dev-python/toml[${PYTHON_USEDEP}]
+	dev-python/xmltodict[${PYTHON_USEDEP}]
+	dev-python/colorama[${PYTHON_USEDEP}]"
+IUSE=""
+SLOT="0"
+LICENSE="{{- .Values.license }}"
+KEYWORDS="*"
+SRC_URI="{{- .Values.src_uri }}"
+S="${WORKDIR}/funtoo-metatools-{{ .Values.snapshot }}"
+
+src_configure() {
+	# Create setup.py
+	sed -e "s/##VERSION##/${PV/_*/}/g" \
+		setup.py.in > setup.py
+
+	unset PYTHONPATH
+	default
+}
+
+# vim: syn=ebuild noet ts=4

pkg/autogen/bot.go

@@ -472,7 +472,31 @@ func (a *AutogenBot) ProcessPackage(mkit *specs.MergeKit,
 
 	if len(atom.Vars) > 0 {
 		for k, v := range atom.Vars {
-			values[k] = v
+			if k == "versions" {
+
+				ilist, ok := v.([]interface{})
+				if !ok {
+					return fmt.Errorf(
+						"Invalid type on versions var for package %s",
+						atom.Name)
+				}
+
+				// Special case.
+				// I need to convert []interface{} to []string
+				vlist := []string{}
+				for _, vv := range ilist {
+					str, ok := vv.(string)
+					if !ok {
+						return fmt.Errorf(
+							"Invalid value %v on versions var for package %s",
+							vv, atom.Name)
+					}
+					vlist = append(vlist, str)
+				}
+				values[k] = vlist
+			} else {
+				values[k] = v
+			}
 		}
 	}
 

pkg/autogen/generators/builtin_noop.go

@@ -0,0 +1,104 @@
+/*
+	Copyright © 2024-2025 Macaroni OS Linux
+	See AUTHORS and LICENSE for the license details and contributors.
+*/
+
+package generators
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/macaroni-os/mark-devkit/pkg/helpers"
+	"github.com/macaroni-os/mark-devkit/pkg/logger"
+	"github.com/macaroni-os/mark-devkit/pkg/specs"
+)
+
+type NoopGenerator struct{}
+
+func NewNoopGenerator() *NoopGenerator {
+	return &NoopGenerator{}
+}
+
+func (g *NoopGenerator) GetType() string {
+	return specs.GeneratorBuiltinNoop
+}
+
+func (g *NoopGenerator) SetVersion(atom *specs.AutogenAtom, version string,
+	mapref *map[string]interface{}) error {
+
+	log := logger.GetDefaultLogger()
+	values := *mapref
+
+	delete(values, "versions")
+
+	artefacts := []*specs.AutogenArtefact{}
+
+	if atom.HasAssets() {
+		for _, asset := range atom.Assets {
+			name, err := helpers.RenderContentWithTemplates(
+				asset.Name,
+				"", "", "asset.name", values, []string{},
+			)
+			if err != nil {
+				return err
+			}
+
+			if asset.Prefix == "" && asset.Url == "" {
+				return fmt.Errorf(
+					"Asset %s for atom %s without prefix and url not admitted with noop",
+					asset.Name, atom.Name)
+			}
+
+			var srcUri string
+
+			if asset.Prefix != "" {
+				srcUri, err = helpers.RenderContentWithTemplates(
+					asset.Prefix,
+					"", "", "asset.name", values, []string{},
+				)
+				if err != nil {
+					return err
+				}
+
+				if !strings.HasSuffix(srcUri, "/") {
+					srcUri += "/"
+				}
+				srcUri += name
+
+			} else {
+				srcUri, err = helpers.RenderContentWithTemplates(
+					asset.Url,
+					"", "", "asset.name", values, []string{},
+				)
+				if err != nil {
+					return err
+				}
+
+			}
+
+			if log.Config.GetGeneral().Debug {
+				log.Debug(fmt.Sprintf("[%s] For asset %s using url %s",
+					atom.Name, name, srcUri))
+			}
+
+			artefacts = append(artefacts, &specs.AutogenArtefact{
+				SrcUri: []string{srcUri},
+				Use:    asset.Use,
+				Name:   name,
+			})
+		}
+
+	}
+
+	values["artefacts"] = artefacts
+
+	return nil
+}
+
+func (g *NoopGenerator) Process(atom *specs.AutogenAtom,
+	def *specs.AutogenAtom) (*map[string]interface{}, error) {
+	ans := make(map[string]interface{}, 0)
+
+	return &ans, nil
+}

pkg/autogen/generators/generator.go

@@ -22,6 +22,8 @@ func NewGenerator(t string) (Generator, error) {
 		return NewGithubGenerator(), nil
 	case specs.GeneratorBuiltinDirListing:
 		return NewDirlistingGenerator(), nil
+	case specs.GeneratorBuiltinNoop:
+		return NewNoopGenerator(), nil
 	default:
 		return nil, fmt.Errorf("Invalid generator type %s", t)
 	}

pkg/specs/definition_autogen.go

@@ -7,6 +7,7 @@ package specs
 const (
 	GeneratorBuiltinGitub      = "builtin-github"
 	GeneratorBuiltinDirListing = "builtin-dirlisting"
+	GeneratorBuiltinNoop       = "builtin-noop"
 
 	TmplEngineHelm   = "helm"
 	TmplEnginePongo2 = "pongo2"
@@ -57,6 +58,7 @@ type AutogenAsset struct {
 	Name    string `json:"name,omitempty" yaml:"name,omitempty"`
 	Matcher string `json:"matcher,omitempty" yaml:"matcher,omitempty"`
 	Prefix  string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
+	Url     string `json:"url,omitempty" yaml:"url,omitempty"`
 }
 
 type AutogenTransform struct {