Regarding Cargo.lock, the recommendation always was to include it in version control for application/binary crates, but not library ones. But tendencies changed over time to include it even for libraries. If a rust-toolchain file is tracked by version control, and is pinned to a specific stable release, then Cargo.lock should definitely be tracked too [1][2].

It’s strictly more information tracked, so there is no logical reason not to include it. There was this concern about people not being aware of --locked not being the default behaviour of cargo install, giving a false sense of security/reliability/reproducibility. But “false sense” is never a good technical argument in my book.

Anyway, your crate is an application/binary one. And if you were to not change the "*" dependency version requirement, then it is almost guaranteed that building your crate will break in the future without tracking Cargo.lock ;)

• Don’t use "*" dep version requirements.
• Add Cargo.lock to version control.
• Why read to string if you’re going to base64-encode and use Vec<u8> later anyway?

Here is an originally random list (using cargo tree --prefix=depth) with some very loose logical grouping. Wide-scoped and well-known crates removed (some remaining are probably still known by most).

mime data-encoding percent-encoding textwrap unescape unicode-width scraper
arrayvec bimap bstr enum-iterator os_str_bytes pretty_assertions paste
clap_complete console indicatif shlex
lz4_flex mpeg2ts roxmltree speedy
aes base64 hex cbc sha1 sha2 rsa
reverse_geocoder trust-dns-resolver
signal-hook signal-hook-tokio
blocking
fs2
semver
snmalloc-rs

My quick notes which are tailored to beginners:

Use Option::ok_or_else() and Result::map_err() instead of let .. else.

• let .. else didn’t always exist. And you might find that some old timers are slightly triggered by it.
• Functional style is generally preferred, as long as it doesn’t effectively become a code obfuscater, like over-using Options as iterators (yes Options are iterators).
• Familiarize yourself with the ? operator and the Try trait

Type inference and generic params

let headers: HashMap = header_pairs
        .iter()
        .map(|line| line.split_once(":").unwrap())
        .map(|(k, v)| (k.trim().to_string(), v.trim().to_string()))
        .collect();

(Borken sanitization will probably butcher this code, good thing the problem will be gone in Lemmy 0.19)

Three tips here:

1. You don’t need to annotate the type here because it can be inferred since headers will be returned as a struct field, the type of which is already known.
2. In this pattern, you should know that you can provide the collected type as a generic param to collect() itself. That may prove useful in other scenarios.
3. You should know that you can collect to a Result/Option if the iterator items are Results/Options. So that .unwrap() is not an ergonomic necessity 😉

Minor point

• Use .into() or .to_owned() for &str => String conversions.
  • Again, some pre-specialization old timers may get slightly triggered by it.

make good use of the crate echo system

• It’s important to make good use of the crate echo system, and talking to people is important in doing that correctly and efficiently.
  • This post is a good start.
  • More specifically, the http crate is the compatibility layer used HTTP rust implementations. Check it out and maybe incorporate it into your experimental/educational code.

Alright, I will stop myself here.

Blog announcement.

https://github.com/LemmyNet/lemmy/pull/4024

Broken input sanitization probably.

Issue will thankfully no longer exist in the next lemmy release.

I do, however, hold to the fact that any sudo implementation will be more complicated than doas. Sudo, as a project, has more options and usecases than doas so it also has more posibilities for bugs or misconfiguration for the user.

Fair.

I’m unable to tell what codebase your are refering to with you’re grep arguments, sorry.

sudo-rs

Opendoas has a significantly smaller codebase. It only has 4397 lines of code compared to Sudo-rs’s staggering 35990 lines.

Hmm.

% tokei src | rg ' (Language|Total)'
 Language            Files        Lines         Code     Comments       Blanks
 Total                  76        16243        13468          682         2093

% tokei src test-framework | rg ' (Language|Total)'
 Language            Files        Lines         Code     Comments       Blanks
 Total                 196        34274        27742         1072         5460

% git grep '#\[cfg(test)\]' src |wc
     40      44    1387

I too love making unaware “Tests Considered Harmful” arguments based on some blind analysis.

Funnily enough, one could easily do some actually potentially useful shallow analysis, instead of a completely blind one, simply by noticing the libc crate dependency, then running:

git grep -Enp -e libc:: --and --not -e '(libc::(c_|LOG)|\b(type|use)\b)'

Ignoring the usage in test modules, use of raw libc appears to be more than you would think from the title. One can also argue that some of that usage would be better served by using rustix instead of raw libc.

Of course authors can counter with arguments why using rustix* is not feasible or would complicate things, and would argue that the use of unsafe+libc is required for this kind of project, and it’s still reasonably limited and contained.

And a little bit more informed back-and-forth discussion can go from there.

* Searching for rustix in the sudo-rs repo returned this. So this predictably has been brought up before.

exa (which OP’s readme says eza is built on) supports creation times. Actual creation time (the “Birth” line in stat output), not ctime.

Look into Arc, RwLock, and Mutex too.

Later, check out parking_lot and co. and maybe async stuff too.

--all-features doesn’t work with that particular crate because two of the features conflict with each other. The features list in my command is the one used for docs.rs from the crate’s Cargo.toml.

are there any hurdles or other good reasons to not just adding this to every create?

I’m no expert. But my guess would be that many crate authors may simply not be aware of this feature. It wasn’t always there, and it’s still unstable. You would have to reach the “Unstable features” page of the rustdoc book to know about it.

Or maybe some know about it, but don’t want to use an unstable feature, or are just waiting for it to possibly automatically work without any modifications.

Of course, I would assume none of this applies to the embassy devs. That Cargo.toml file has a flavors field, which is something I’ve never seen before 😉 So, I’m assuming they are way more knowledgable (and up-to-date) about the Rust ecosystem than me.

So, this is being worked on. But for now, that crate needs this line in lib.rs

#![cfg_attr(docsrs, feature(doc_auto_cfg))]

And this line in Cargo.toml’s [package.metadata.docs.rs] section:

rustdoc-args = ["--cfg", "docsrs"]

With these changes, feature gating will be displayed in the docs.

To replicate this locally:

RUSTDOCFLAGS='--cfg docsrs' cargo doc --features=nightly,defmt,pender-callback,arch-cortex-m,executor-thread,executor-interrupt

I constantly seem to include something from the docs, only to be told by the compiler that it does not exist, and then I have to open the source for the create to figure out if it’s hidden behind a feature flag.

As others mentioned, the situation is not perfect. And you may need to check Cargo.toml. Maybe even the source.

But as for the quoted part above, the docs should definitely indicate if a part of the API is behind a feature. Let’s take rustix as an example.

Here is the module list:

Here is the view from inside a module:

Here is the view from a function page:

This is also true for platform support. Take this extension trait from std:

Now, it’s true that one could be navigating to method docs in the middle of a long doc page, where those indicators at the top may be missed. But that’s a UI issue. And it could be argued that repeating those indicators over and over would introduce too much clutter.

Note: the ᐸᐳ characters used below are Canadian Aboriginal syllabics because Lemmy devs haven’t fixed broken input sanitization yet.

Well, getters are not an official concept in Rust. You can do whatever works best in your case.

Just worth pointing out that a method with a return value of OptionᐸVecᐸStringᐳᐳ wouldn’t be really a getter, as you must be constructing values, or moving ownership, or cloning. None of these actions conceptually belong to a getter.

Also, you should be clear on the what the Option abstraction means. Does it mean the vector is empty? Does it mean the vector does not exist or some sort of null (FFI ore serialization contexts)? And make sure the code does what you expect it to do.

Note: the ᐸᐳ characters used below are Canadian Aboriginal syllabics because Lemmy devs haven’t fixed broken input sanitization yet.

A vec and a string are basically the same thing (a series of bytes)

Everything is a series of bytes! I thought you were going to mention that both are fat pointers. But that “series of bytes” description is quite weird.

This makes handling it much easier because you can still iterate over it

This is not a valid consideration/objection, as Options are iterable and you can flatten them:

fn main() {
  let v = vec![1,2,3];
  for n in Some(&v).into_iter().flatten() {
    eprintln!("{n}");
  }
  for n in None::ᐸ&Vecᐸi32ᐳᐳ.into_iter().flatten() {
    eprintln!("{n}");
  }
}

This might involve the compiler making an allocation of an empty array but most of them (gcc, ghc) will now what you are doing and optimize the null check on the empty array to a bool check

This paragraph appears to be out of place in the context of a Rust discussion.

I will use the Rust Book first.

Good choice. Follow it with this Little Book of Rust Macros. And don’t verge into the unsafe stuff early, and don’t verge into it later unless it’s really necessary.

https://github.com/LemmyNet/lemmy/issues/3827

Because the audiophile is broke, and will have to listen to some music on a lowly device, but the craving for some placebo is still there.

EDIT: btw, the bitrate is missing a k in your command 😉