My personal project and infrastructure archive
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 
nomicon/README.md

189 lines
6.6 KiB

# rust-overlay
![CI](https://github.com/oxalica/rust-overlay/workflows/CI/badge.svg)
![sync-channels](https://github.com/oxalica/rust-overlay/workflows/sync-channels/badge.svg)
*Pure and reproducible* overlay for binary distributed rust toolchains.
A compatible but better replacement for rust overlay of [mozilla/nixpkgs-mozilla][mozilla].
Hashes of toolchain components are pre-fetched (and compressed) in tree (`manifests` directory),
so the evaluation is *pure* and no need to have network (but [nixpkgs-mozilla][mozilla] does).
It also works well with [Nix Flakes](https://nixos.wiki/wiki/Flakes).
- The toolchain hashes are auto-updated daily using GitHub Actions.
- Current oldest supported version is stable 1.29.0 and beta/nightly 2018-09-13
(which are randomly chosen).
## Use as a classic Nix overlay
You can put the code below into your `~/.config/nixpkgs/overlays.nix`.
```nix
[ (import (builtins.fetchTarball "https://github.com/oxalica/rust-overlay/archive/master.tar.gz")) ]
```
Then the provided attribute paths are available in nix command.
```bash
$ nix-env -iA rust-bin.stable.latest.rust # Do anything you like.
```
Alternatively, you can install it into nix channels.
```bash
$ nix-channel --add https://github.com/oxalica/rust-overlay/archive/master.tar.gz rust-overlay
$ nix-channel --update
```
And then feel free to use it anywhere like
`import <nixpkgs> { overlays = [ (import <rust-overlay>) ]; }` in your nix shell environment.
## Use with Nix Flakes
This repository already has flake support.
NOTE: **Only the output `overlay` is stable and preferred to be used in your flake.**
Other outputs like `packages` and `defaultPackage` are for human try and are subject to change.
For a quick play, just use `nix shell` to bring the latest stable rust toolchain into scope.
(All commands below requires preview version of Nix with flake support.)
```shell
$ nix shell github:oxalica/rust-overlay
$ rustc --version
rustc 1.49.0 (e1884a8e3 2020-12-29)
$ cargo --version
cargo 1.49.0 (d00d64df9 2020-12-05)
```
Here's an example of using it in nixos configuration.
```nix
{
description = "My configuration";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
rust-overlay.url = "github:oxalica/rust-overlay";
};
outputs = { nixpkgs, rust-overlay, ... }: {
nixosConfigurations = {
hostname = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
modules = [
./configuration.nix # Your system configuration.
({ pkgs, ... }: {
nixpkgs.overlays = [ rust-overlay.overlay ];
environment.systemPackages = [ pkgs.rust-bin.stable.latest.rust ];
})
];
};
};
};
}
```
## Attributes provided by the overlay
```nix
{
rust-bin = {
# The default dist url for fetching.
# Override it if you want to use a mirror server.
distRoot = "https://static.rust-lang.org/dist";
# Select a toolchain and aggregate components by rustup's `rust-toolchain` file format.
# See: https://github.com/ebroto/rustup/blob/c2db7dac6b38c99538eec472db9d23d18f918409/README.md#the-toolchain-file
fromRustupToolchain = { channel, components ? [], targets ? [] }: «derivation»;
# Same as `fromRustupToolchain` but read from a `rust-toolchain` file (legacy one-line string or in TOML).
fromRustupToolchainFile = rust-toolchain-file-path: «derivation»;
# [Experimental]
# Custom toolchain from a specific rustc git revision.
# This does almost the same thing as `rustup-toolchain-install-master`. (https://crates.io/crates/rustup-toolchain-install-master)
# Parameter `components` should be an attrset with component name as key and its SRI hash as value.
fromRustcRev = { pname ? .., rev, components, target ? .. }: «derivation»;
stable = {
# The latest stable toolchain.
latest = {
# Aggregate all default components. (recommended)
rust = «derivation»;
# Individial components.
rustc = «derivation»;
cargo = «derivation»;
rust-std = «derivation»;
# ... other components
};
"1.49.0" = { /* toolchain */ };
"1.48.0" = { /* toolchain */ };
# ... other versions.
};
beta = {
# The latest beta toolchain.
latest = { /* toolchain */ };
"2021-01-01" = { /* toolchain */ };
"2020-12-30" = { /* toolchain */ };
# ... other versions.
};
nightly = {
# The latest nightly toolchain.
latest = { /* toolchain */ };
"2020-12-31" = { /* toolchain */ };
"2020-12-30" = { /* toolchain */ };
# ... other versions.
};
# ... Some internal attributes omitted.
};
# These are for compatibility with nixpkgs-mozilla and
# provide same toolchains as `rust-bin.*`.
latest.rustChannels = /* ... */;
rustChannelOf = /* ... */;
rustChannelOfTargets = /* ... */;
rustChannels = /* ... */;
}
```
Some examples (assume `nixpkgs` had the overlay applied):
- Latest stable/beta/nightly rust with all default components:
`nixpkgs.rust-bin.{stable,beta,nightly}.latest.rust`
- A specific version of stable rust:
`nixpkgs.rust-bin.stable."1.48.0".rust`
- A specific date of beta rust:
`nixpkgs.rust-bin.nightly."2021-01-01".rust`
- A specific version of stable rust:
`nixpkgs.rust-bin.stable."1.48.0".rust`
- A specific date of nightly rust:
`nixpkgs.rust-bin.nightly."2020-12-31".rust`
- Latest stable rust with additional component `rust-src` and extra target
`arm-unknown-linux-gnueabihf`:
```nix
nixpkgs.rust-bin.stable.latest.rust.override {
extensions = [ "rust-src" ];
targets = [ "arm-unknown-linux-gnueabihf" ];
}
```
- If you already have a [`rust-toolchain` file for rustup](https://github.com/ebroto/rustup/blob/c2db7dac6b38c99538eec472db9d23d18f918409/README.md#the-toolchain-file),
you can simply use `fromRustupToolchainFile` to get the customized toolchain derivation.
```nix
nixpkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain
```
- *\[Experimental\]*
Toolchain with specific rustc git revision.
This is useful for development of rust components like [MIRI](https://github.com/rust-lang/miri).
Note: the example below may not built since upstream CI periodly removes old artifacts.
```nix
rust-bin.fromRustcRev {
rev = "a2cd91ceb0f156cb442d75e12dc77c3d064cdde4";
components = {
rustc = "sha256-x+OkPVStX00AiC3GupIdGzWluIK1BnI4ZCBbg72+ZuI=";
rust-src = "sha256-13PpzzYtd769Xkb0QzHpNfYCOnLMWFolc9QyYq98z2k=";
};
}
```
- See more examples in directory `examples`.
For more details, see also the source code of `./rust-overlay.nix`.
[mozilla]: https://github.com/mozilla/nixpkgs-mozilla