Unable to compile with 'cargo web build'

[godadada]

I have a web client rust app that needs stdweb crate which uses 'cargo web build' subcommand. Also the app dependency chain needs buf_redux crate. The 'cargo web build' causes error when building bug_redux. The error is message is below. Please advice how to resolve the issue:

cargo/registry/src/github.com-1ecc6299db9ec823/buf_redux-0.8.1
dude@ubuntu:~/.cargo/registry/src/github.com-1ecc6299db9ec823/buf_redux-0.8.1$ cargo web build
Compiling safemem v0.2.0
Compiling memchr v2.2.0
Compiling buf_redux v0.8.1 (/home/dude/.cargo/registry/src/github.com-1ecc6299db9ec823/buf_redux-0.8.1)
error[E0463]: can't find crate for slice_deque
--> src/buffer/slice_deque_buf.rs:14:1
|
14 | extern crate slice_deque;
| ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
error: aborting due to previous error
For more information about this error, try rustc --explain E0463.
error: Could not compile buf_redux.

To learn more, run the command again with --verbose.
error: build failed

[abonander]

This is because slice_deque doesn't support building for WASM. I'll need to fix that.

In the meantime, try cargo web build --no-default-features.

[godadada]

I tried the command with the new option, got same error.
Could you share any schedule that WASM support may be available?

Thanks

[abonander]

Sorry, you actually need to set default-features = false for the buf_redux dependency in your Cargo.toml:

# before 
buf_redux = "0.8"

# after
buf_redux = { version = "0.8", default-features = false }

It should be a trivial fix but I need to install cargo-web to test it, I haven't gotten around to it yet.

[godadada]

My program uses rpgp which depends on buf_redux. I see in rpgp's Cargo.toml file having following entries:

[dependencies.buf_redux]
version = "0.8.1"
default-features = false
.....
[features]
default = ["ringbuf"]
ringbuf = ["buf_redux/default"]

I do not know if I can change my App's Cargo.toml to have any impact, but tried anyway with same error.

please advise.

[abonander]

Try doing the same with your dependency on rpgp.

[godadada]

Okay. That nailed it. In case anyone else has similar issue, I used following entry in Cargo.toml:

pgp = { version = "*", default-features = false }

Thanks again.