tjh.dev
1#!/usr/bin/env nix-shell
2#!nix-shell -i bash -p nix curl libxml2 jq
3
4set -euo pipefail
5
6nixpkgs="$(git rev-parse --show-toplevel || (printf 'Could not find root of nixpkgs repo\nAre we running from within the nixpkgs git repo?\n' >&2; exit 1))"
7
8attr="${UPDATE_NIX_ATTR_PATH:-kodelife}"
9version="$(curl -sSL https://hexler.net/kodelife/appcast/linux | xmllint --xpath '/rss/channel/item/enclosure/@*[local-name()="version"]' - | cut -d= -f2- | tr -d '"' | head -n1)"
10
11narhash() {
12 nix --extra-experimental-features nix-command store prefetch-file --json "$url" | jq -r .hash
13}
14
15nixeval() {
16 if [ "$#" -ge 2 ]; then
17 systemargs=(--argstr system "$2")
18 else
19 systemargs=()
20 fi
21
22 nix --extra-experimental-features nix-command eval --json --impure "${systemargs[@]}" -f "$nixpkgs" "$1" | jq -r .
23}
24
25findpath() {
26 path="$(nix --extra-experimental-features nix-command eval --json --impure -f "$nixpkgs" "$1.meta.position" | jq -r . | cut -d: -f1)"
27 outpath="$(nix --extra-experimental-features nix-command eval --json --impure --expr "builtins.fetchGit \"$nixpkgs\"")"
28
29 if [ -n "$outpath" ]; then
30 path="${path/$(echo "$outpath" | jq -r .)/$nixpkgs}"
31 fi
32
33 echo "$path"
34}
35
36oldversion="${UPDATE_NIX_OLD_VERSION:-$(nixeval "$attr".version)}"
37
38pkgpath="$(findpath "$attr")"
39
40if [ "$version" = "$oldversion" ]; then
41 echo 'update.sh: New version same as old version, nothing to do.'
42 exit 0
43fi
44
45sed -i -e "/version\s*=/ s|\"$oldversion\"|\"$version\"|" "$pkgpath"
46
47for system in aarch64-linux armv7l-linux x86_64-linux; do
48 url="$(nixeval "$attr".src.url "$system")"
49
50 curhash="$(nixeval "$attr".src.outputHash "$system")"
51 newhash="$(narhash "$url")"
52
53 sed -i -e "s|\"$curhash\"|\"$newhash\"|" "$pkgpath"
54done