tjh.dev
nixpkgs mirror (for testing)
github.com/NixOS/nixpkgs
nix
1#!/usr/bin/env nix-shell
2#! nix-shell -p nix jq curl cargo rsync
3#! nix-shell -i bash
4
5set -eu
6
7cd "$(dirname "$0")"
8
9crate=rure
10
11echo "Getting latest version from crates.io API" >&2
12
13curlOpts=(
14 -H "Accept: application/json"
15 -H "User-Agent: $crate update script (https://github.com/nixos/nixpkgs/)"
16)
17
18version="$(curl "${curlOpts[@]}" "https://crates.io/api/v1/crates/$crate" \
19 | jq -r .crate.max_stable_version)"
20
21echo "Prefetching latest tarball from crates.io" >&2
22
23url="https://crates.io/api/v1/crates/$crate/$version/download"
24prefetch="$(nix-prefetch-url --print-path --type sha256 --unpack "$url")"
25
26cat > pin.json <<EOF
27{
28 "pname": "$crate",
29 "version": "$version",
30 "hash": "sha256:$(printf '%s' "$prefetch" | head -n1)"
31}
32EOF
33
34echo "Generating updated Cargo.lock" >&2
35
36tmp="$(mktemp -d)"
37
38cleanup() {
39 echo "Removing $tmp" >&2
40 rm -rf "$tmp"
41}
42
43trap cleanup EXIT
44
45rsync -a --chmod=ugo=rwX "$(printf '%s' "$prefetch" | tail -n1)/" "$tmp"
46
47pushd "$tmp"
48cargo update
49popd
50
51cp "$tmp/Cargo.lock" ./Cargo.lock