Unverified Commit c10b1e44 authored by Lily Foster's avatar Lily Foster
Browse files

touchosc: make updateScript more readable and robust 

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
parent ac1f5b72

pkgs/applications/audio/touchosc/update.sh

+26 −5
Original line number Diff line number Diff line 
#!/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