CodeSampleX

Sample

colorchoice 1.0.5

Verified sample for cargo colorchoice 1.0.5. The contract ran on rust 1 · linux alpine/x64 · docker and passed: ColorChoice enum provides Auto, AlwaysAnsi…

sha256:5aedbf5d118a1821550ea0c6b65854f7a21fd77e7a8beefac8bd537e7a99d281

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment linux · alpine · musl x64 cargo

Verification-run environments

Environment Contract Stages Run
rust 1 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · cargo@1rust:1-alpine@sha256:a10e64dd139b…
2026-10-12

Case

HOW
Goal
verify pkg:cargo/colorchoice@1.0.5
Packages
Created
2026-10-11T20:38:51Z

Contract

  1. ColorChoice enum provides Auto, AlwaysAnsi, Always, and Never variants with Auto as default
  2. ColorChoice implements Copy, Clone, Debug, and Eq traits
  3. ColorChoice global reads the current global color choice setting
  4. ColorChoice write_global modifies the global color choice state across calls

Files

  • Cargo.lock
  • Cargo.toml
  • PROMPT.md
  • csx.json
  • spec.json
  • src/lib.rs
  • test/contract.rs

Download the source artifact (tar.gz)

Source

Cargo.lock
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "colorchoice"
version = "1.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"

[[package]]
name = "sample-colorchoice"
version = "1.0.0"
dependencies = [
 "colorchoice",
]
Cargo.toml
[package]
name = "sample-colorchoice"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
colorchoice = "=1.0.5"

[[bin]]
name = "contract"
path = "test/contract.rs"
PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:cargo/colorchoice@1.0.5
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/colorchoice@1.0.5

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:abba7272ce5f517c64d12a1a977a9a3eba5737f491890901b1c58d0e11f051ad","contract":["ColorChoice enum provides Auto, AlwaysAnsi, Always, and Never variants with Auto as default","ColorChoice implements Copy, Clone, Debug, and Eq traits","ColorChoice global reads the current global color choice setting","ColorChoice write_global modifies the global color choice state across calls"],"goal":"verify pkg:cargo/colorchoice@1.0.5","kind":"HOW","packages":["pkg:cargo/colorchoice@1.0.5"],"schemaVersion":1},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/colorchoice@1.0.5"],"schemaVersion":1,"subject":"pkg:cargo/colorchoice@1.0.5","verifierAdapter":"cargo@1"}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:cargo/colorchoice@1.0.5",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/colorchoice@1.0.5"
  ]
}
src/lib.rs
//! Clean-room verification sample for colorchoice.

pub use colorchoice::*;
test/contract.rs
use colorchoice::ColorChoice;

fn main() {
    // 1. ColorChoice enum provides Auto, AlwaysAnsi, Always, and Never variants with Auto as default
    assert_eq!(ColorChoice::default(), ColorChoice::Auto);
    let auto = ColorChoice::Auto;
    let always_ansi = ColorChoice::AlwaysAnsi;
    let always = ColorChoice::Always;
    let never = ColorChoice::Never;

    // 2. ColorChoice implements Copy, Clone, Debug, and Eq traits
    assert_eq!(auto, ColorChoice::Auto);
    assert_ne!(auto, always);
    assert_ne!(always_ansi, always);
    assert_ne!(always, never);

    let copied: ColorChoice = auto;
    let cloned: ColorChoice = copied.clone();
    assert_eq!(cloned, auto);

    assert_eq!(format!("{:?}", ColorChoice::Auto), "Auto");
    assert_eq!(format!("{:?}", ColorChoice::AlwaysAnsi), "AlwaysAnsi");
    assert_eq!(format!("{:?}", ColorChoice::Always), "Always");
    assert_eq!(format!("{:?}", ColorChoice::Never), "Never");

    // 3. ColorChoice global reads the current global color choice setting
    let initial = ColorChoice::global();
    assert_eq!(initial, ColorChoice::Auto);

    // 4. ColorChoice write_global modifies the global color choice state across calls
    ColorChoice::Always.write_global();
    assert_eq!(ColorChoice::global(), ColorChoice::Always);

    ColorChoice::Never.write_global();
    assert_eq!(ColorChoice::global(), ColorChoice::Never);

    ColorChoice::AlwaysAnsi.write_global();
    assert_eq!(ColorChoice::global(), ColorChoice::AlwaysAnsi);

    ColorChoice::Auto.write_global();
    assert_eq!(ColorChoice::global(), ColorChoice::Auto);

    println!("All colorchoice contract assertions passed successfully.");
}

Origin Seeder

anonymous