Spencer Bull
eda9236c67
Tracks Perplexity's own Debian repository, the feed the app updates itself from, via .omarchy/upstream.sh -- same shape as openai-codex-desktop. pkgver carries the build number from the pool filename because the index's Version field drops it and upstream rebuilds under the same marketing version; the pool wants the '+' percent-encoded. The launcher replaces the postinst symlink pacman never creates and defaults Chromium to Wayland.
83 lines
3.1 KiB
Bash
Executable File
83 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
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# Perplexity ships its desktop app from its own Debian repository. The
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# per-architecture package index carries the filename and SHA256 of every deb,
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# so an update costs two small HTTP requests instead of a 175 MB download. The
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# index's Version field drops the build number the pool filename carries, and
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# upstream rebuilds under the same marketing version, so the version of record
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# here is the full string embedded in the filename.
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set -euo pipefail
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BASE_URL="https://packages.perplexity.ai/deb"
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declare -A DEB_ARCHES=([x86_64]=amd64 [aarch64]=arm64)
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# Print "<version> <sha256>" for the newest stanza in a Packages index, version
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# meaning the full string from the pool filename. Newest is vercmp's opinion,
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# which is the one bin/sync-upstream and pacman both use; sort -V disagrees
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# with it over versions like 1.0a.
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newest_release() {
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local index="$1"
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local debarch="$2"
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local filename sha256 version best_version="" best_sha256=""
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local prefix="pool/main/p/perplexity/perplexity_"
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local suffix="_${debarch}.deb"
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while read -r filename sha256; do
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# The PKGBUILD reconstructs the pool URL from pkgver alone, so a stanza
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# naming anything else -- a rename, or a new pool layout -- has to stop
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# the sync rather than pin a checksum to a URL nobody will fetch.
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if [[ "$filename" != "${prefix}"*"${suffix}" ]]; then
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echo "Unexpected pool filename in the upstream index: $filename" >&2
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return 1
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fi
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version="${filename#"$prefix"}"
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version="${version%"$suffix"}"
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if [[ -z "$best_version" ]] || [[ "$(vercmp "$version" "$best_version")" -gt 0 ]]; then
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best_version="$version"
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best_sha256="$sha256"
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fi
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done < <(awk '
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{ sub(/\r$/, "") }
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/^Filename:/ { filename = $2 }
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/^SHA256:/ { sha256 = $2 }
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/^$/ { if (filename && sha256) print filename, sha256; filename = sha256 = "" }
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END { if (filename && sha256) print filename, sha256 }
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' <<<"$index")
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[[ -n "$best_version" ]] || return 1
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echo "$best_version $best_sha256"
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}
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versions=()
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declare -A checksums=()
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for arch in "${!DEB_ARCHES[@]}"; do
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index=$(curl -fsSL "$BASE_URL/dists/stable/main/binary-${DEB_ARCHES[$arch]}/Packages")
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read -r version sha256 <<<"$(newest_release "$index" "${DEB_ARCHES[$arch]}")"
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if [[ -z "${version:-}" || -z "${sha256:-}" ]]; then
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echo "No usable release found for $arch in the upstream package index" >&2
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exit 1
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fi
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versions+=("$version")
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checksums[$arch]="$sha256"
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done
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# A release lands one architecture at a time, and a single pkgver has to cover
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# both -- including the build number, since that is what the download URLs are
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# built from. Report no update until they agree; the next run picks it up.
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for version in "${versions[@]}"; do
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if [[ "$version" != "${versions[0]}" ]]; then
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echo "Upstream architectures are mid-release (${versions[*]}); skipping" >&2
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echo '{}'
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exit 0
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fi
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done
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jq -n \
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--arg pkgver "${versions[0]}" \
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--arg x86_64 "${checksums[x86_64]}" \
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--arg aarch64 "${checksums[aarch64]}" \
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'{pkgver: $pkgver, sha256sums: {x86_64: [$x86_64], aarch64: [$aarch64]}}'
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