Issue with futures_lite Dependency Resolution in ashpd (read_to_string / read_to_end Errors)

1

Hello everyone,

I'm encountering an issue while compiling my project that uses ashpd (v0.10.2). When building, I receive errors related to unresolved modules and missing trait methods from the futures_lite crate. Here are the relevant error messages:

error[E0433]: failed to resolve: use of undeclared crate or module `futures_lite`
 --> /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ashpd-0.10.2/src/helpers.rs:4:5
  |
4 | use futures_lite::io::AsyncReadExt;
  |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_lite`
help: there is a crate or module with a similar name
  |
4 | use futures_util::io::AsyncReadExt;
  |     ~~~~~~~~~~~~

error[E0432]: unresolved import `futures_util::AsyncReadExt`
   --> /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ashpd-0.10.2/src/desktop/secret.rs:26:5
    |
26  | use futures_util::AsyncReadExt;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ no `AsyncReadExt` in the root
note: found an item that was configured out
   --> /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/futures-util-0.3.31/src/lib.rs:320:47
    |
320 |     AsyncBufRead, AsyncBufReadExt, AsyncRead, AsyncReadExt, AsyncSeek, AsyncSeekExt, AsyncWrite,
    |                                               ^^^^^^^^^^^^
note: the item is gated behind the `io` feature
   --> /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/futures-util-0.3.31/src/lib.rs:316:7
    |
316 | #[cfg(feature = "io")]
    |       ^^^^^^^^^^^^^^

error[E0599]: no method named `read_to_string` found for struct `async_fs::File` in the current scope
    --> /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ashpd-0.10.2/src/helpers.rs:28:16
     |
28   |     match file.read_to_string(&mut buffer).await {
     |                ^^^^^^^^^^^^^^ method not found in `File`
     |
    ::: /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-2.6.0/src/io.rs:2059:8
     |
2059 |     fn read_to_string<'a>(&'a mut self, buf: &'a mut String) -> ReadToStringFuture<'a, Self>
     |        -------------- the method is available for `async_fs::File` here
     = help: items from traits can only be used if the trait is in scope
help: trait `AsyncReadExt` which provides `read_to_string` is implemented but not in scope; perhaps you want to import it
     |
1    + use futures_lite::io::AsyncReadExt;
     |
help: there is a method `read_to_end` with a similar name
     |
28   |     match file.read_to_end(&mut buffer).await {
     |                ~~~~~~~~~~~

error[E0599]: no method named `read_to_end` found for struct `async_net::unix::UnixStream` in the current scope
    --> /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ashpd-0.10.2/src/desktop/secret.rs:113:8
     |
113  |     x1.read_to_end(&mut buf).await?;
     |        ^^^^^^^^^^^ method not found in `UnixStream`
     |
    ::: /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-2.6.0/src/io.rs:2029:8
     |
2029 |     fn read_to_end<'a>(&'a mut self, buf: &'a mut Vec<u8>) -> ReadToEndFuture<'a, Self>
     |        ----------- the method is available for `async_net::unix::UnixStream` here
     = help: items from traits can only be used if the trait is in scope
help: trait `AsyncReadExt` which provides `read_to_end` is implemented but not in scope; perhaps you want to import it
     |
21   + use futures_lite::io::AsyncReadExt;

What I’ve Tried

  1. Adding futures-lite as a Dependency:
    I added futures-lite = { version = "2.6.0", features = ["std"] } to my Cargo.toml and even tried to "rename" it so that downstream crates can refer to it as futures_lite.

  2. Patching futures-lite:
    I added a [patch.crates-io] section to redirect dependencies to the Git repository of futures-lite (using the master branch).

  3. Selecting a Single Async Runtime:
    I experimented with disabling ashpd's default features and enabling only a single async runtime (either "async-std" or "tokio") to avoid conflicts, but the errors still persist.

My Environment

  • ashpd version: 0.10.2 (or Git version if applicable)
  • futures-lite version: 2.6.0
  • futures-util version: 0.3.31
  • Rust edition: 2021

Questions

  • Has anyone experienced similar issues with ashpd and the futures_lite dependency?
  • Is there a known workaround or a patch I can apply in my Cargo.toml to resolve these module/trait resolution errors?
  • Should I consider using a different version of ashpd or applying a Git patch to fix these problems?

Any help or pointers would be greatly appreciated!

Thanks in advance!

2

It seems that you have a corrupted copy of ashpd 0.10.2. The source code view from docs.rs shows that this is not what line 4 should contain:

1   #[cfg(feature = "async-std")]
2   use async_fs::File;
3   #[cfg(feature = "async-std")]
4   use futures_util::AsyncReadExt;

You should delete /home/ericsonwillians/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ashpd-0.10.2/ and let Cargo re-download it. This may not be the entire problem, but you should definitely delete the corrupted sources to ensure there is no future confusion.

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