Crates are the unit of compilation in Rust.
Crates are the unit of compilation in rust, and the basic building block of its module system.
The crates can be published in crates.io, the official Rust packages registry, where you can browse them.
Questions tagged [rust-crates]
206 questions
215
votes
2 answers
How to use a local unpublished crate?
I've made a library:
cargo new my_lib
and I want to use that library in a different program:
cargo new my_program --bin
extern crate my_lib;
fn main {
println!("Hello, World!");
}
what do I need to do to get this to work?
They aren't in the…
Andre S.
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58
votes
1 answer
How do I make an Rust item public within a crate, but private outside it?
I have a crate that has lots of code, so I've split it into multiple files/modules. However, some modules have internal unsafe stuff (e.g. raw pointers) that I need to make public to the different modules, but I don't want to expose to users of my…
Timmmm
- 88,195
- 71
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48
votes
1 answer
Error installing a crate via cargo: specified package has no binaries
I'm trying to install a Rust crate on my system (Arch Linux) using Cargo. I can search for crates and find what I need, for example:
$ cargo search curl | head -n3
Updating registry `https://github.com/rust-lang/crates.io-index`
curl (0.3.0) …
q9f
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- 96
47
votes
2 answers
How to clear the Cargo cache?
When I run cargo build, various libs get stored within the folder /usr/local/lib/rustlib/.
What is the correct way to clear these libs? I could rm these files manually, but would that be the right thing to do? I noticed that…
bojangle
- 888
- 1
- 8
- 14
46
votes
5 answers
Rust can't find crate
I'm trying to create a module in Rust and then use it from a different file. This is my file structure:
matthias@X1:~/projects/bitter-oyster$ tree
.
├── Cargo.lock
├── Cargo.toml
├── Readme.md
├── src
│ ├── liblib.rlib
│ ├── lib.rs
│ ├──…
Stein
- 3,179
- 5
- 27
- 51
35
votes
4 answers
How to tell what "features" are available per crate?
Is there a standard way to determine what features are available for a given crate?
I'm trying to read Postgres timezones, and this says to use the crate postgres = "0.17.0-alpha.1" crate's with-time or with-chrono features.
When I try this in my…
stuart
- 1,785
- 2
- 26
- 38
27
votes
2 answers
Should Cargo.lock be committed when the crate is both a rust library and an executable?
I 've read https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
If I understand correctly, when I commit Cargo.lock into my crate (which is both a library and an executable)'s repository, and also, publish it to crates.io, downstream…
Danielhu
- 499
- 4
- 13
23
votes
3 answers
How do you read a YAML file in Rust?
I've poked the serde-yaml and yaml-rust crates a bit, but I haven't seen any examples.
semore_1267
- 1,327
- 2
- 14
- 29
18
votes
1 answer
How do I share common code between Rust projects without publishing to crates.io?
There may not be a good answer for this question, but I have code that I would like to share between two different Rust projects WITHOUT publishing the crate to crates.io.
The code is proprietary and I don't want to put it out into the wild.
mattforni
- 855
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- 11
18
votes
3 answers
How to link against a local Rust library? (similar to npm link)
When developing a library in node,
if you wish to develop against a library that only exists locally,
before you npm publish,
you can use npm link /path/to/other/node_library.
What is the equivalent of this for Rust?
How do you create another a foo…
bguiz
- 27,371
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- 243
17
votes
1 answer
What exactly is a 'crate' in the Cargo ecosystem and what is the mapping to what is on crates.io?
I am a little confused as to the exact things hosted on crates.io (is a 'crate' the proper way to refer to those)? My understanding is that a crate is a unit of compilation in Rust, but then what is the mapping between crates and what is on…
nromaniv
- 665
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- 18
13
votes
2 answers
How can I input an integer seed for producing random numbers using the rand crate in Rust?
In a Rust project, I want to generate reproducible random numbers based on a integer seed as I'm used to in Java.
The documentation for Seed in the rand crate states:
Seed type, which is restricted to types mutably-dereferencable as u8 arrays (we…
Katharina
- 243
- 2
- 5
12
votes
1 answer
Rust cargo.toml specify custom path for C linker and compiler
I'm having some issues due to my ignorance of cargo setup and the vast amount of documentation.
The cargo.toml file is the current:
[package]
name = "hello"
version = "0.1.0"
authors = ["PC4\\Author"]
[dependencies]
sdl2 = { version = "0.34.1",…
CoffeDeveloper
- 7,961
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11
votes
2 answers
error: failed to run custom build command for `openssl v0.9.24`
I want to install cargo-apk cargo install cargo-apk to my system (Linux Mint), but I'm getting this error
error: failed to run custom build command for `openssl v0.9.24`
Caused by:
process didn't exit successfully:…
Jura
- 111
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- 4
11
votes
1 answer
How to resolve "multiple matching crates for `package`" in cargo?
When running cargo build:
error: multiple matching crates for `url`
It then lists the candidates:
./target/deps/liburl-11a95471847b9e04.rlib
/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/lib/liburl-4e7c5e5c.{so,rlib}
... and then aborts because…
bojangle
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