1 files changed, 71 insertions, 0 deletions
diff --git a/pkgs/by-name/sk/skia-aseprite/update.sh b/pkgs/by-name/sk/skia-aseprite/update.sh
new file mode 100755
index 0000000000000..78f7e67da6e90
--- /dev/null
+++ b/pkgs/by-name/sk/skia-aseprite/update.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env nix-shell
+#!nix-shell --pure -i bash
+#!nix-shell -p cacert curl git jq nix-prefetch-git
+# shellcheck shell=bash
+# vim: set tabstop=2 shiftwidth=2 expandtab:
+set -euo pipefail
+shopt -s inherit_errexit
+
+[ $# -gt 0 ] || {
+  printf >&2 'usage: %s <deps>' "$0"
+  exit 1
+}
+
+pkgpath=$(git rev-parse --show-toplevel)/pkgs/by-name/sk/skia-aseprite
+depfilter=$(tr ' ' '|' <<< "$*")
+depfile=$pkgpath/deps.nix
+pkgfile=$pkgpath/package.nix
+
+update_deps() {
+  local deps third_party_deps name url rev hash prefetch
+
+  version=$(sed -n 's|.*version = "\(.*\)".*|\1|p' < "$pkgfile")
+  deps=$(curl -fsS https://raw.githubusercontent.com/aseprite/skia/$version/DEPS)
+  third_party_deps=$(sed -n 's|[ ",]||g; s|:| |; s|@| |; s|^third_party/externals/||p' <<< "$deps")
+  filtered=$(grep -E -- "$depfilter" <<< "$third_party_deps")
+  if [[ -z $filtered ]]; then
+    printf >&2 '%s: error: filter "%s" matched nothing' "$0" "$depfilter"
+    return 1
+  fi
+
+  printf '{ fetchgit }:\n{\n'
+  while read -r name url rev; do
+    printf >&2 'Fetching %s@%s\n' "$name" "$rev"
+    prefetch=$(nix-prefetch-git --quiet --rev "$rev" "$url")
+    hash=$(jq -r '.hash' <<< "$prefetch")
+
+    cat << EOF
+  $name = fetchgit {
+    url = "$url";
+    rev = "$rev";
+    hash = "$hash";
+  };
+EOF
+  # `read` could exit with a non-zero code without a newline at the end
+  done < <(printf '%s\n' "$filtered")
+  printf '}\n'
+}
+
+update_version() {
+  local newver newrev
+  newver=$(
+    curl --fail \
+      --header 'Accept: application/vnd.github+json' \
+      --location --show-error --silent \
+      ${GITHUB_TOKEN:+ --user \":$GITHUB_TOKEN\"} \
+      https://api.github.com/repos/aseprite/skia/releases/latest \
+      | jq -r .tag_name
+  )
+  newhash=$(nix-prefetch-git --quiet --rev "$newver" https://github.com/aseprite/skia.git | jq -r '.hash')
+  sed \
+    -e 's|version = ".*"|version = "'$newver'"|' \
+    -e 's|hash = ".*"|hash = "'$newhash'"|' \
+    -- "$pkgfile"
+}
+
+temp=$(mktemp)
+trap 'ret=$?; rm -rf -- "$temp"; exit $ret' EXIT
+update_version > "$temp"
+cp "$temp" "$pkgfile"
+update_deps > "$temp"
+cp "$temp" "$depfile"