First commit; provide project basics

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Luc Perkins 2023-05-19 15:36:19 +02:00
commit 5f5c23bb88
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.envrc Normal file
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use flake

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/target

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"locked": {
"lastModified": 1684464849,
"narHash": "sha256-f8th/GWE9M2hePTMZc0YyFboigt9AG/ioEcyHcdFK2I=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "b969a89c3e84a121c9b3af2e4ef277cd822b988a",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs_2": {
"locked": {
"lastModified": 1681358109,
"narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"nixpkgs": "nixpkgs",
"rust-overlay": "rust-overlay"
}
},
"rust-overlay": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs_2"
},
"locked": {
"lastModified": 1684462813,
"narHash": "sha256-YFphDnxzXtLLExXjiR9bUVF4isI/MKiC4HMboh2ZSOc=",
"owner": "oxalica",
"repo": "rust-overlay",
"rev": "e2ceeaa7f9334c5d732323b6fec363229da4f382",
"type": "github"
},
"original": {
"owner": "oxalica",
"repo": "rust-overlay",
"type": "github"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

33
flake.nix Normal file
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@ -0,0 +1,33 @@
{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
rust-overlay.url = "github:oxalica/rust-overlay";
};
outputs = { self, nixpkgs, ... }@inputs:
let
overlays = [
inputs.rust-overlay.overlays.default
(final: prev: {
rustToolchain = prev.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
})
];
systems = [ "aarch64-linux" "aarch64-darwin" "x86_64-linux" "x86_64-darwin" ];
forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f {
pkgs = import nixpkgs { inherit system overlays; };
});
in
{
devShells = forAllSystems ({ pkgs }: {
default = pkgs.mkShell {
packages = with pkgs; [
rustToolchain
cargo-edit
cargo-watch
rust-analyzer
];
};
});
};
}

2
rust-toolchain.toml Normal file
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@ -0,0 +1,2 @@
[toolchain]
channel = "1.69.0"

103
src/main.rs Normal file
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#![allow(dead_code)]
use std::collections::HashMap;
use std::fs::read_to_string;
use std::path::PathBuf;
use chrono::{DateTime, Duration, NaiveDateTime, Utc};
use clap::Parser;
use serde::Deserialize;
const MAX_DAYS: usize = 30;
#[derive(Parser)]
struct Cli {
#[arg(short, long)]
path: PathBuf,
}
#[derive(Debug, thiserror::Error)]
enum Error {
#[error("couldn't access flake.lock: {0}")]
Io(#[from] std::io::Error),
#[error("couldn't parse flake.lock: {0}")]
Json(#[from] serde_json::Error),
}
#[derive(Clone, Deserialize)]
struct Original {
owner: String,
repo: String,
r#type: String,
r#ref: Option<String>,
}
#[derive(Clone, Deserialize)]
struct Locked {
#[serde(alias = "lastModified")]
last_modified: i64,
#[serde(alias = "narHash")]
nar_hash: String,
owner: String,
repo: String,
rev: String,
r#type: String,
}
#[derive(Clone, Deserialize)]
struct Node {
inputs: Option<HashMap<String, String>>,
locked: Option<Locked>,
original: Option<Original>,
}
#[derive(Clone, Deserialize)]
struct FlakeLock {
nodes: HashMap<String, Node>,
root: String,
version: usize,
}
fn nixpkgs_too_old(timestamp: i64) -> bool {
let date_from_timestamp = DateTime::<Utc>::from_utc(
NaiveDateTime::from_timestamp(timestamp, 0),
Utc,
);
let thirty_days_ago = Utc::now() - Duration::days(30);
date_from_timestamp < thirty_days_ago
}
fn check_for_outdated_nixpkgs(nodes: &HashMap<String, Node>) {
let nixpkgs_deps = nixpkgs_deps(nodes);
for dep in nixpkgs_deps.values() {
if let Some(locked) = &dep.locked {
if nixpkgs_too_old(locked.last_modified) {
println!("TOO OLD");
}
}
}
}
fn check_flake_lock(flake_lock: &FlakeLock) {
check_for_outdated_nixpkgs(&flake_lock.nodes);
}
fn nixpkgs_deps(nodes: &HashMap<String, Node>) -> HashMap<String, Node> {
nodes
.iter()
.filter(|(k, _)| k.starts_with("nixpkgs"))
.map(|(k, v)| (k.clone(), v.clone()))
.collect()
}
fn main() -> Result<(), Error> {
let Cli { path } = Cli::parse();
let file = read_to_string(path)?;
let flake_lock: FlakeLock = serde_json::from_str(&file)?;
check_flake_lock(&flake_lock);
Ok(())
}