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nixpkgs/pkgs/tools/archivers/7zz/update.sh
j-k c12cec8bc3
_7zz: correct license (#163999)
* _7zz: correct license and remove p7zip dependency

The code under Compress/Rar* is licensed under a specific unRAR license
Also Compress/LzfseDecoder.cpp is covered by BSD3

The unRAR code is removed from the `.tar.xz` since the license posits you
agree or remove the code from your hard drive
This adds some complexity to updating 7zz so there is also an update
script

Meta has been updated and tweaked

Source is now downloaded from sourceforge in the `.tar.xz` version to
avoid depending on p7zip

* _7zz: add notice of the license updates and optional unRAR licenced code
2022-03-18 12:47:19 +08:00

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#! /usr/bin/env nix-shell
#! nix-shell -i bash -p coreutils gnused curl jq
set -euo pipefail
cd "$(dirname "${BASH_SOURCE[0]}")"
DRV_DIR="$PWD"
OLD_VERSION="$(sed -nE 's/\s*version = "(.*)".*/\1/p' ./default.nix)"
NEW_VERSION="$(curl "https://sourceforge.net/projects/sevenzip/best_release.json" | jq '.platform_releases.linux.filename' -r | cut -d/ -f3)"
echo "comparing versions $OLD_VERSION => $NEW_VERSION"
if [[ "$OLD_VERSION" == "$NEW_VERSION" ]]; then
echo "Already up to date! Doing nothing"
exit 0
fi
NIXPKGS_ROOT="$(realpath "$DRV_DIR/../../../..")"
echo "getting free source hash"
OLD_FREE_HASH="$(nix-instantiate --eval --strict -E "with import $NIXPKGS_ROOT {}; _7zz.src.drvAttrs.outputHash" | tr -d '"')"
echo "getting unfree source hash"
OLD_UNFREE_HASH="$(nix-instantiate --eval --strict -E "with import $NIXPKGS_ROOT {}; (_7zz.override { enableUnfree = true; }).src.drvAttrs.outputHash" | tr -d '"')"
NEW_VERSION_FORMATTED="$(echo "$NEW_VERSION" | tr -d '.')"
URL="https://7-zip.org/a/7z${NEW_VERSION_FORMATTED}-src.tar.xz"
NEW_FREE_HASH=$(nix-prefetch -f "$NIXPKGS_ROOT" -E "_7zz.src" --url "$URL")
NEW_UNFREE_OUT=$(nix-prefetch -f "$NIXPKGS_ROOT" -E "(_7zz.override { enableUnfree = true; }).src" --url "$URL" --output raw --print-path)
# first line of raw output is the hash
NEW_UNFREE_HASH="$(echo "$NEW_UNFREE_OUT" | sed -n 1p)"
# second line of raw output is the src path
NEW_UNFREE_SRC="$(echo "$NEW_UNFREE_OUT" | sed -n 2p)"
# make sure to nuke the unfree src from the updater's machine
# > the license requires that you agree to these use restrictions, or you must remove the software (source and binary) from your hard disks
# https://fedoraproject.org/wiki/Licensing:Unrar
nix-store --delete "$NEW_UNFREE_SRC"
echo "updating version"
sed -i "s/version = \"$OLD_VERSION\";/version = \"$NEW_VERSION\";/" "$DRV_DIR/default.nix"
echo "updating free hash"
sed -i "s@free = \"$OLD_FREE_HASH\";@free = \"$NEW_FREE_HASH\";@" "$DRV_DIR/default.nix"
echo "updating unfree hash"
sed -i "s@unfree = \"$OLD_UNFREE_HASH\";@unfree = \"$NEW_UNFREE_HASH\";@" "$DRV_DIR/default.nix"
echo "done"