Error: proc macro `main` not expanded: Cannot create expander for
I want to run a web server with Rust and Actix-Web. After following these steps of their documentation everything works as expected: the server runs on port 8080.
The problem I have is that VSCode shows errors
This error message is shown in the tooltip upon hovering the error in the IDE
proc macro
mainnot expanded: Cannot create expander for /Users/name/Documents/projects/project-rust/target/debug/deps/libactix_web_codegen-b262af45f63000f3.dylib: Io(Custom { kind: InvalidData, error: DlOpen { desc: "dlopen(/Users/name/Documents/projects/project-rust/target/debug/deps/libactix_web_codegen-b262af45f63000f3.dylib, 0x000A): tried: '/Users/name/Documents/projects/project-rust/target/debug/deps/libactix_web_codegen-b262af45f63000f3.dylib' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')), '/usr/local/lib/libactix_web_codegen-b262af45f63000f3.dylib' (no such file), '/usr/lib/libactix_web_codegen-b262af45f63000f3.dylib' (no such file)" } })
Environemnt - macOS Monterey 12.1 (M1)
VS Code
Thanks, @Smitop for the tip
I reinstalled VSCode with universal build and the errors are gone
P.S. I tried to install the build for Apple Silicon, but it didn't help
NVIM (macOS, arm64, m1)
For those experiencing the same issue in NeoVim, the following steps helped resolve the errors.
- Open a terminal
- Execute
rustup toolchain list
It should print
stable-aarch64-apple-darwin (default)
stable-x86_64-apple-darwin
- Copy the
stable-x86_64-apple-darwinand make it default, by usingrustup default stable-x86_64-apple-darwin - Re-open NeoVim.
- Errors should disappear
- Defining and blanket implementing a common trait to avoid dependencies in Rust
- Migrating from BASIC to Rust, what do I do with On Gosub?
- Batch-update adjacent elements in a Vec in Rust (for performance)
- Diagonal matrix from vector
- How to define a const closure inside a generic struct
- Circular Reference Construction in Rust
- Failed to select a version for the requirement `rand = "^0.9.0"`
- Is Mutex/Lock required if runing on a single core CPU
- How do I choose a random value from an enum?
- Use a different cargo profile for CI
- How can I debug why a dependency is in my Cargo.lock?
- Use `write!` without bringing the Write trait into scope in Rust
- Polars Rust API creating a dataframe from a string variable / reading csv with options from a string
- expected associated type, found type parameter
- Format specifier for truncating string-like types
- Matching enum variant without specifying variants in Rust macro
- How do you create a column of a vector/list type in Polars using Rust
- How to create a Rust struct with string members?
- Schedule wakeup with WinAPI in Rust
- Projection matrix causes vertical offset
- Iterate over a generic iterable without having to clone
- Unauthorized access. 'Listen' claim(s) are required - Azure function using RUST (event hub)
- Rust: double linked list
- Is there a nicer way to implement Display for structs that own collections of things with Display?
- Swift catch with case let
- Why does Rust consider an owning closure to exist for 'static lifetime?
- Error: "linker 'cc' not found" when cross compiling a rust project from windows to linux using cargo
- Why am I getting "App state is not configured" in Ntex despite using App::state()?
- How do I inspect local variables or use the watch window with Rust code using VSCode and LLDB?
- How to share a HashMap state amongst Yew Rust components?