Add updates for phil-opp/blog_os

Author: phil-opp

content/this-month/2021-11/index.md

@@ -94,12 +94,6 @@ If you maintain a Rust project related to operating system development and are l
 
 In this section, we describe updates to personal projects that are not directly related to the `rust-osdev` organization. Feel free to [create a pull request](https://github.com/rust-osdev/homepage/pulls) with the updates of your OS project for the next post.
 
-### [`phil-opp/blog_os`](https://github.com/phil-opp/blog_os)
-
-<span class="gray">(Section written by [@phil-opp](https://github.com/phil-opp))</span>
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-This month, ...
-
 ### [`metta-systems/vesper`](https://github.com/metta-systems/vesper)
 
 <span class="gray">(Section written by [@berkus](https://github.com/berkus))</span>
@@ -110,6 +104,14 @@ It's in very early stages of development and is a basis for a larger envisioned
 
 Since [rebooting to Rust](https://metta.systems/blog/reboot-to-rust/) almost 4 years ago I've been constantly amazed by the language ecosystem and what wonders are possible. This time I want to tell about incredible tooling that makes my OSdev experience a sunny warm place in contrast to the barren lands of my previous OSdev environments. [Read the full article here](https://metta.systems/blog/osdev-tooling/).
 
+### [`phil-opp/blog_os`](https://github.com/phil-opp/blog_os)
+
+<span class="gray">(Section written by [@phil-opp](https://github.com/phil-opp))</span>
+
+There were no visible changes to the [_Writing an OS in Rust_](https://os.phil-opp.com/) series this month, but I continued working on the new build system for the upcoming third edition. One particular change that I want to highlight is that I redesigned the configuration of the `bootloader` crate. Instead of passing it via [a `package.metadata.bootloader` section](https://docs.rs/bootloader/0.10.9/bootloader/struct.Config.html) in the kernel's `Cargo.toml`, users will pass a configuration struct to the [`entry_point`](https://docs.rs/bootloader/0.10.9/bootloader/macro.entry_point.html) macro. This struct is then serialized at compile time into a separate section in the ELF executable, which the bootloader can then read on loading. This change should make the build process easier and more flexible.
+
+I plan to simplify the build system further, but I'm currently waiting on some upcoming `cargo` features for that. In particular, I think that [_artifact dependencies_](https://github.com/rust-lang/cargo/pull/9992) and [_per-packet configuration_](https://internals.rust-lang.org/t/proposal-move-some-cargo-config-settings-to-cargo-toml/13336) options will be very useful for the project, especially the config options I mentioned in my [status update comment](https://github.com/phil-opp/blog_os/issues/1063#issuecomment-968341112) on GitHub.
+
 ## Join Us?
 
 Are you interested in Rust-based operating system development? Our `rust-osdev` organization is always open to new members and new projects. Just let us know if you want to join! A good way for getting in touch is our [gitter channel](https://gitter.im/rust-osdev/Lobby).