# japaric/xargo

The sysroot manager that lets you build and customize `std`

Repository: https://github.com/japaric/xargo
Canonical: https://ross.abutalabs.com/products/xargo
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: rust, cargo, sysroot, bare-metal, cross-compilation, no-std
Last push: 2023-05-02T22:57:39+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3812, "days_push": 1219, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1134, forks 99 (observed 2026-08-28T04:03:43.218220+00:00)

## What it is
Xargo is a CLI tool that builds and manages Rust sysroots, letting you cross-compile the standard library (core/std) for targets without prebuilt binaries, such as bare-metal ARM targets. It also supports building customized std crates with specific compiler flags and features.

## Use cases
- cross compile rust for thumbv6m-none-eabi bare metal target
- build rust core crate for a target without binary releases
- customize std with panic=abort for embedded rust
- build rust no_std project for microcontroller
- manage rust sysroots for cross compilation

## When to choose
- cross-compiling Rust to bare-metal or no_std targets lacking prebuilt std
- needing a customized std built with specific flags or features

## When to avoid
- modern Rust with build-std nightly feature, which replaces xargo
- ordinary hosted-target Rust development that never needs custom sysroots

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: build-tool, cli, compiler
- domain: developer-tools, embedded-systems
- platform: cli, cross-platform, rust
- tags: rust, cargo, sysroot, cross-compilation, no-std, bare-metal, command-line

## Member repositories
- japaric/xargo (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:43.218220+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:37:06.393289+00:00, confidence not recorded.
  - readme: https://github.com/japaric/xargo (fetched 2026-08-28T04:03:43.218220+00:00, sha 17d94cc16fda)
  - registry_crates: https://crates.io/api/v1/crates/xargo (fetched 2026-08-29T12:41:52.573188+00:00, sha 64927cea55f6)
- Data as of 2026-08-30T08:39:29.467469+00:00.