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92 lines
2.9 KiB
92 lines
2.9 KiB
3 years ago
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# rust-overlay
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*Pure and reproducible* overlay for binary distributed rust toolchains.
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A better replacement for github:mozilla/nixpkgs-mozilla
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Hashes of toolchain components are pre-fetched (and compressed) in `manifests` directory.
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So there's no need to have network access during nix evaluation (but nixpkgs-mozilla does).
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Since the evaluation is now *pure*, it also means this can work well with [Nix Flakes](https://nixos.wiki/wiki/Flakes).
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- [ ] Auto-updating is TODO.
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- Current oldest supported version is stable 1.29.0 and nightly 2018-09-13
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(which is randomly chosen).
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## Use as classical nix overlay
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The installaction and usage are exactly the same as nixpkgs-mozilla.
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You can follow https://github.com/mozilla/nixpkgs-mozilla#rust-overlay and just replace the url to
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https://github.com/oxalica/rust-overlay
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You can put the code below into your `~/.config/nixpkgs/overlays.nix`.
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```nix
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[ (import (builtins.fetchTarball https://github.com/oxalica/rust-overlay/archive/master.tar.gz)) ]
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```
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Or install it into `nix-channel`:
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```shell
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$ nix-channel --add https://github.com/oxalica/rust-overlay/archive/master.tar.gz rust-overlay
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```
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And then feel free to use it anywhere like
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`import <nixpkgs> { overlays = [ (import <rust-overlay>) ] }` in your nix shell environment
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## Use with Nix Flakes
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This repository already has flake support. So you can simply use it as input.
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Here's an example of using it in nixos configuration.
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```nix
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{
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description = "My configuration";
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
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rust-overlay.url = "github:oxalica/rust-overlay";
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};
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outputs = { nixpkgs, rust-overlay, ... }: {
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nixosConfigurations = {
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hostname = nixpkgs.lib.nixosSystem {
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system = "x86_64-linux";
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modules = [
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./configuration.nix # Your system configuration.
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({ pkgs, ... }: {
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nixpkgs.overlays = [ rust-overlay.overlay ];
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environment.systemPackages = [ pkgs.latest.rustChannels.stable.rust ];
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})
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];
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};
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};
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};
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}
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```
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## Interface
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The overlay re-use many codes from nixpkgs/mozilla and the interface is **almost the same**.
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It provides `latest.rustChannels.{stable,nightly}.<toolchain-component>` and `rustChannelOf`.
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To use the latest stable or nightly rust toolchain, the easiest way is just to install
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`latest.rustChannels.{stable,nightly}.rust`, which combines `rustc`, `cargo`, `rustfmt` and
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all other default components.
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You can also pin to specific nightly toolchain using `rustChannelOf`:
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```nix
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(nixpkgs.rustChannelOf { date = "2020-01-01"; channel = "nightly"; }).rust
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```
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Customize an toolchain.
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```nix
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nixpkgs.latest.rustChannels.stable.rust.override {
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extensions = [
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"rust-src"
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];
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targets = [
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"x86_64-unknown-linux-musl"
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"arm-unknown-linux-gnueabihf"
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];
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}
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```
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For more details, see `./rust-overlay.nix` or README of https://github.com/mozilla/nixpkgs-mozilla.
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