diff --git a/package.json b/package.json
new file mode 100644
index 0000000..af912ea
--- /dev/null
+++ b/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "krad",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "workspaces": [
+    "packages/*"
+  ],
+  "bin": {
+    "krad": "./tools/krad.js"
+  },
+  "scripts": {
+    "test": "node --test"
+  },
+  "engines": {
+    "node": ">=22"
+  }
+}
diff --git a/packages/krad-clang/index.js b/packages/krad-clang/index.js
new file mode 100644
index 0000000..3a35ae6
--- /dev/null
+++ b/packages/krad-clang/index.js
@@ -0,0 +1,13 @@
+import { defineComponent } from "../krad-utils/index.js";
+
+export const component = defineComponent({
+  name: "krad-clang",
+  source: {
+    directory: "cheerp-compiler",
+    focus: ["llvm/include/llvm/Cheerp", "llvm/lib/CheerpUtils", "llvm/lib/CheerpWriter", "clang/test/Cheerp"],
+    license: "Apache-2.0 WITH LLVM-exception",
+    licenseFile: "LICENSE.TXT",
+    repository: "https://github.com/leaningtech/cheerp-compiler",
+    revision: "0596bd128750d43569d17d56e443a95066d3461f",
+  },
+});
diff --git a/packages/krad-clang/package.json b/packages/krad-clang/package.json
new file mode 100644
index 0000000..dae9875
--- /dev/null
+++ b/packages/krad-clang/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "krad-clang",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "exports": "./index.js"
+}
diff --git a/packages/krad-libs/index.js b/packages/krad-libs/index.js
new file mode 100644
index 0000000..8699c38
--- /dev/null
+++ b/packages/krad-libs/index.js
@@ -0,0 +1,14 @@
+import { defineComponent } from "../krad-utils/index.js";
+
+export const component = defineComponent({
+  name: "krad-libs",
+  dependencies: ["krad-clang", "krad-utils", "krad-musl"],
+  source: {
+    directory: "cheerp-libs",
+    focus: ["system", "stdlibs", "wasm"],
+    license: "Apache-2.0 WITH LLVM-exception",
+    licenseFile: "LICENSE.TXT",
+    repository: "https://github.com/leaningtech/cheerp-libs",
+    revision: "a578cfaa28bde51f1ae8b17980e6bf7727333be7",
+  },
+});
diff --git a/packages/krad-libs/package.json b/packages/krad-libs/package.json
new file mode 100644
index 0000000..462ddd1
--- /dev/null
+++ b/packages/krad-libs/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "krad-libs",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "exports": "./index.js"
+}
diff --git a/packages/krad-musl/index.js b/packages/krad-musl/index.js
new file mode 100644
index 0000000..f0a562b
--- /dev/null
+++ b/packages/krad-musl/index.js
@@ -0,0 +1,14 @@
+import { defineComponent } from "../krad-utils/index.js";
+
+export const component = defineComponent({
+  name: "krad-musl",
+  dependencies: ["krad-clang", "krad-utils"],
+  source: {
+    directory: "cheerp-musl",
+    focus: ["arch", "include", "src", "tools"],
+    license: "MIT",
+    licenseFile: "COPYRIGHT",
+    repository: "https://github.com/leaningtech/cheerp-musl",
+    revision: "dd07ec8e7c52f8dc4351bf9b329df3b1d190470a",
+  },
+});
diff --git a/packages/krad-musl/package.json b/packages/krad-musl/package.json
new file mode 100644
index 0000000..81448ed
--- /dev/null
+++ b/packages/krad-musl/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "krad-musl",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "exports": "./index.js"
+}
diff --git a/packages/krad-utils/index.js b/packages/krad-utils/index.js
new file mode 100644
index 0000000..d6e49b6
--- /dev/null
+++ b/packages/krad-utils/index.js
@@ -0,0 +1,76 @@
+const namePattern = /^krad-[a-z][a-z0-9-]*$/;
+const revisionPattern = /^[a-f0-9]{40}$/;
+const pathPattern = /^[A-Za-z0-9._+-]+(?:\/[A-Za-z0-9._+-]+)*$/;
+
+const path = (value, field) => {
+  if (typeof value !== "string" || !pathPattern.test(value) || value.split("/").some((part) => part === "." || part === "..")) {
+    throw new TypeError(`${field} must be a relative path`);
+  }
+  return value;
+};
+
+export const defineComponent = ({ name, dependencies = [], source }) => {
+  if (!namePattern.test(name)) throw new TypeError("invalid component name");
+  if (!Array.isArray(dependencies) || dependencies.some((dependency) => !namePattern.test(dependency))) {
+    throw new TypeError(`${name} has invalid dependencies`);
+  }
+  if (new Set(dependencies).size !== dependencies.length || dependencies.includes(name)) {
+    throw new TypeError(`${name} has duplicate or self dependencies`);
+  }
+  if (!source || typeof source !== "object") throw new TypeError(`${name} requires a source`);
+  const repository = new URL(source.repository);
+  if (repository.protocol !== "https:") throw new TypeError(`${name} repository must use HTTPS`);
+  if (!revisionPattern.test(source.revision)) throw new TypeError(`${name} requires a full Git revision`);
+  if (typeof source.license !== "string" || !source.license) throw new TypeError(`${name} requires a source license`);
+  if (!Array.isArray(source.focus ?? [])) throw new TypeError(`${name} focus must be an array`);
+  return Object.freeze({
+    name,
+    dependencies: Object.freeze([...dependencies]),
+    source: Object.freeze({
+      directory: path(source.directory, `${name} source directory`),
+      focus: Object.freeze((source.focus ?? []).map((entry) => path(entry, `${name} focus`))),
+      license: source.license,
+      licenseFile: path(source.licenseFile, `${name} license file`),
+      repository: repository.href.replace(/\/$/, ""),
+      revision: source.revision,
+    }),
+  });
+};
+
+export const orderComponents = (components) => {
+  if (!Array.isArray(components)) throw new TypeError("components must be an array");
+  const byName = new Map();
+  for (const component of components) {
+    if (!component?.name || byName.has(component.name)) throw new TypeError("component names must be unique");
+    byName.set(component.name, component);
+  }
+  const state = new Map();
+  const ordered = [];
+  const visit = (component, chain = []) => {
+    if (state.get(component.name) === 2) return;
+    if (state.get(component.name) === 1) throw new Error(`component cycle: ${[...chain, component.name].join(" -> ")}`);
+    state.set(component.name, 1);
+    for (const dependency of component.dependencies) {
+      const required = byName.get(dependency);
+      if (!required) throw new Error(`${component.name} requires missing ${dependency}`);
+      visit(required, [...chain, component.name]);
+    }
+    state.set(component.name, 2);
+    ordered.push(component);
+  };
+  for (const component of components) visit(component);
+  return Object.freeze(ordered);
+};
+
+export const component = defineComponent({
+  name: "krad-utils",
+  dependencies: ["krad-clang"],
+  source: {
+    directory: "cheerp-utils",
+    focus: ["scripts", "tools"],
+    license: "Apache-2.0 WITH LLVM-exception",
+    licenseFile: "LICENSE.TXT",
+    repository: "https://github.com/leaningtech/cheerp-utils",
+    revision: "4b95822b860d215d669374be98c1bc4425040e08",
+  },
+});
diff --git a/packages/krad-utils/package.json b/packages/krad-utils/package.json
new file mode 100644
index 0000000..d94fd4c
--- /dev/null
+++ b/packages/krad-utils/package.json
@@ -0,0 +1,7 @@
+{
+  "name": "krad-utils",
+  "version": "0.0.0",
+  "private": true,
+  "type": "module",
+  "exports": "./index.js"
+}