Incompatibility with rust-embed ^6.0

[djrakita]

Hi,

I am looking to use this library in an ongoing project -- specifically, I am hoping to use the EmbeddedFS features to make an embedded, portable virtual file system for python and WASM ports of my robotics library.

I noticed that using new versions of rust-embed are not compatible with rust-vfs. Specifically, using rust-embed versions ^6.0 causes "the trait rust_embed::RustEmbed is not implemented for ..." errors, even when the struct explicitly derives from RustEmbed. To be clear, this issue is not present for rust-embed versions 5.9 and below; however, it would be great if versions 6.0 and above could be supported since there are really nice features in the newer versions of rust-embed (compression, include-exclude, etc.).

Just let me know if you need any more details, thanks a lot!

[manuel-woelker]

Thanks for the note, I'll try to make an update in the next days.

[manuel-woelker]

Released in 0.7.0, should be good to go! Let me know if you have any issues.

[agieocean]

Having what seems like the same issue on 0.10.0, tried downgrading rust-embed to 5.9.0 but still had the same issue

Here's the error I get

error[E0599]: the function or associated item `new` exists for struct `EmbeddedFS<EmbedFFS>`, but its trait bounds were not satisfied
  --> src/lib.rs:26:46
   |
14 | struct EmbedFFS;
   | --------------- doesn't satisfy `EmbedFFS: rust_embed::RustEmbed`
...
26 |   let EFS: VfsPath = EmbeddedFS::<EmbedFFS>::new().into();
   |                                              ^^^ function or associated item cannot be called on `EmbeddedFS<EmbedFFS>` due to unsatisfied trait bounds
   |
   = note: the following trait bounds were not satisfied:
           `EmbedFFS: rust_embed::RustEmbed`
note: the trait `rust_embed::RustEmbed` must be implemented
  --> /home/ag/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rust-embed-6.3.0/src/lib.rs:32:1
   |
32 | pub trait RustEmbed {
   | ^^^^^^^^^^^^^^^^^^^

error[E0277]: the trait bound `EmbedFFS: rust_embed::RustEmbed` is not satisfied
  --> src/lib.rs:26:22
   |
26 |   let EFS: VfsPath = EmbeddedFS::<EmbedFFS>::new().into();
   |                      ^^^^^^^^^^^^^^^^^^^^^^ the trait `rust_embed::RustEmbed` is not implemented for `EmbedFFS`
   |
note: required by a bound in `EmbeddedFS`
  --> /home/ag/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vfs-0.10.0/src/impls/embedded.rs:19:8
   |
17 | pub struct EmbeddedFS<T>
   |            ---------- required by a bound in this struct
18 | where
19 |     T: RustEmbed + Send + Sync + Debug + 'static,
   |        ^^^^^^^^^ required by this bound in `EmbeddedFS`

Relevant code:

use rust_embed::RustEmbed;
use vfs:: {
  VfsPath,
  EmbeddedFS,
  VfsError
};

#[derive(RustEmbed)]
#[derive(Debug)]
#[folder = "templates"]
struct EmbedFFS;

let EFS: VfsPath = EmbeddedFS::<EmbedFFS>::new().into();

Cargo.toml

[package]
name = "hello_world"
version = "0.1.0"
authors = ["The wasm-bindgen Developers"]
edition = "2018"
rust-version = "1.57"

[lib]
crate-type = ["cdylib"]

[dependencies]
wasm-bindgen = "0.2.90"
getrandom = { version = "0.2", features = ["js"] }
tera = {version="1", optional=false}
rust-embed="8.2.0"

[dependencies.web-sys]
version = "0.3.4"
features = [
  'Document',
  'Element',
  'HtmlElement',
  'Node',
  'Window',
]

[dependencies.vfs]
version = "0.10.0"
features = [
'embedded-fs'
]

Note: I'm new to Rust so my apologies if I'm missing something obvious

[manuel-woelker]

I think this is a version conflict, the dependency is on "6", which means it is probably incompatible with both a 5.9.0 as well as 8.2.0. Does it work using a 6.x Version of rust-embed in the dependencies?

[agieocean]

That was it, set it to 6.1.0 and it compiles now, thank you!