add doc for newly added modules to config

Author: Shourya742

src/bootstrap/src/core/config/config.rs

@@ -1,7 +1,11 @@
-//! Serialized configuration of a build.
+//! This module defines the central `Config` struct, which aggregates all components
+//! of the bootstrap configuration into a single unit.
 //!
-//! This module implements parsing `bootstrap.toml` configuration files to tweak
-//! how the build runs.
+//! It serves as the primary public interface for accessing bootstrap's configuration data.
+//! This module orchestrates the overall configuration parsing process by leveraging
+//! logic from `parsing.rs` and provides top-level methods for initializing (`Config::parse()`)
+//! and querying the comprehensive configuration state. It also contains various utility
+//! methods that operate on the overall configuration.
 
 use std::cell::Cell;
 use std::collections::{BTreeSet, HashMap, HashSet};

src/bootstrap/src/core/config/parsing.rs

@@ -1,3 +1,11 @@
+//! This module contains the core logic for parsing, validating, and inferring the
+//! final bootstrap `Config` from various raw inputs.
+//!
+//! It handles the intricate process of reading command-line arguments, environment variables,
+//! and `bootstrap.toml` files, merging them, applying defaults, and performing
+//! cross-component validations. The main `parse_inner` function and its related
+//! helper functions reside here, transforming the raw `Toml` data into the structured `Config` types
+
 use std::collections::{BTreeSet, HashMap};
 use std::path::{Path, PathBuf, absolute};
 use std::str::FromStr;

src/bootstrap/src/core/config/toml.rs

@@ -1,3 +1,11 @@
+//! This module defines the structures that directly mirror the `bootstrap.toml`
+//! file's format. These types are used for `serde` deserialization, serving as an
+//! intermediate representation that gets processed and merged into the final `Config`
+//! types from the `types` module.
+//!
+//! It also houses the `Merge` trait and `define_config!` macro, which are essential
+//! for handling these raw TOML structures.
+
 use serde::{Deserialize, Deserializer};
 use serde_derive::Deserialize;
 

src/bootstrap/src/core/config/types.rs

@@ -1,3 +1,6 @@
+//! This module defines the core, processed, and operational structures that represent
+//! the final bootstrap configuration.
+
 use std::fmt::Display;
 use std::path::PathBuf;
 use std::str::FromStr;