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touchosc: make updateScript more readable and robust

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Changes:
* factor out different system attrs for nixeval function
* factor out narhash function
* avoid doing work if version has not actually changed
* better support running script directly instead of via
  maintainers/scripts/update.nix
This commit is contained in:
Lily Foster 2023-02-17 13:32:31 -05:00
parent ac1f5b72a9
commit c10b1e44b8
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GPG key ID: 49340081E484C893
1 changed files with 26 additions and 5 deletions
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31
pkgs/applications/audio/touchosc/update.sh
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@ -1,5 +1,5 @@
#!/usr/bin/env nix-shell
#!nix-shell -i bash -p nix curl libxml2 jq common-updater-scripts
#!nix-shell -i bash -p nix curl libxml2 jq
set -euo pipefail
@ -8,6 +8,20 @@ nixpkgs="$(git rev-parse --show-toplevel || (printf 'Could not find root of nixp
attr="${UPDATE_NIX_ATTR_PATH:-touchosc}"
version="$(curl -sSL https://hexler.net/touchosc/appcast/linux | xmllint --xpath '/rss/channel/item/enclosure/@*[local-name()="version"]' - | cut -d= -f2- | tr -d '"' | head -n1)"
narhash() {
nix --extra-experimental-features nix-command store prefetch-file --json "$url" | jq -r .hash
}
nixeval() {
if [ "$#" -ge 2 ]; then
systemargs=(--argstr system "$2")
else
systemargs=()
fi
nix --extra-experimental-features nix-command eval --json --impure "${systemargs[@]}" -f "$nixpkgs" "$1" | jq -r .
}
findpath() {
path="$(nix --extra-experimental-features nix-command eval --json --impure -f "$nixpkgs" "$1.meta.position" | jq -r . | cut -d: -f1)"
outpath="$(nix --extra-experimental-features nix-command eval --json --impure --expr "builtins.fetchGit \"$nixpkgs\"")"
@ -19,15 +33,22 @@ findpath() {
echo "$path"
}
oldversion="${UPDATE_NIX_OLD_VERSION:-$(nixeval "$attr".version)}"
pkgpath="$(findpath "$attr")"
sed -i -e "/version\s*=/ s|\"$UPDATE_NIX_OLD_VERSION\"|\"$version\"|" "$pkgpath"
if [ "$version" = "$oldversion" ]; then
echo 'update.sh: New version same as old version, nothing to do.'
exit 0
fi
sed -i -e "/version\s*=/ s|\"$oldversion\"|\"$version\"|" "$pkgpath"
for system in aarch64-linux armv7l-linux x86_64-linux; do
url="$(nix --extra-experimental-features nix-command eval --json --impure --argstr system "$system" -f "$nixpkgs" "$attr".src.url | jq -r .)"
url="$(nixeval "$attr".src.url "$system")"
curhash="$(nix --extra-experimental-features nix-command eval --json --impure --argstr system "$system" -f "$nixpkgs" "$attr".src.outputHash | jq -r .)"
newhash="$(nix --extra-experimental-features nix-command store prefetch-file --json "$url" | jq -r .hash)"
curhash="$(nixeval "$attr".src.outputHash "$system")"
newhash="$(narhash "$url")"
sed -i -e "s|\"$curhash\"|\"$newhash\"|" "$pkgpath"
done