pkgs/applications/audio/touchosc/update.sh

   1 #!/usr/bin/env nix-shell
   2 #!nix-shell -i bash -p nix curl libxml2 jq
   3
   4 set -euo pipefail
   5
   6 nixpkgs="$(git rev-parse --show-toplevel || (printf 'Could not find root of nixpkgs repo\nAre we running from within the nixpkgs git repo?\n' >&2; exit 1))"
   7
   8 attr="${UPDATE_NIX_ATTR_PATH:-touchosc}"
   9 version="$(curl -sSL https://hexler.net/touchosc/appcast/linux | xmllint --xpath '/rss/channel/item/enclosure/@*[local-name()="version"]' - | cut -d= -f2- | tr -d '"' | head -n1)"
  10
  11 narhash() {
  12     nix --extra-experimental-features nix-command store prefetch-file --json "$url" | jq -r .hash
  13 }
  14
  15 nixeval() {
  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" "$1" | jq -r .
  23 }
  24
  25 findpath() {
  26     path="$(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 "$path"
  34 }
  35
  36 oldversion="${UPDATE_NIX_OLD_VERSION:-$(nixeval "$attr".version)}"
  37
  38 pkgpath="$(findpath "$attr")"
  39
  40 if [ "$version" = "$oldversion" ]; then
  41     echo 'update.sh: New version same as old version, nothing to do.'
  42     exit 0
  43 fi
  44
  45 sed -i -e "/version\s*=/ s|\"$oldversion\"|\"$version\"|" "$pkgpath"
  46
  47 for system in aarch64-linux armv7l-linux x86_64-linux; do
  48     url="$(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"
  54 done