nixpkgs/pkgs/os-specific/linux/kernel/update-libre.sh

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#! /usr/bin/env nix-shell
#! nix-shell -i bash -p nix-prefetch-svn git curl
set -euo pipefail
nixpkgs="$(git rev-parse --show-toplevel)"
path="$nixpkgs/pkgs/os-specific/linux/kernel/linux-libre.nix"
old_rev="$(grep -o 'rev = ".*"' "$path" | awk -F'"' '{print $2}')"
old_sha256="$(grep -o 'sha256 = ".*"' "$path" | awk -F'"' '{print $2}')"
svn_url=https://www.fsfla.org/svn/fsfla/software/linux-libre/releases/branches/
rev="$(curl -s "$svn_url" | grep -Em 1 -o 'Revision [0-9]+' | awk '{print $2}')"
if [ "$old_rev" = "$rev" ]; then
echo "No updates for linux-libre"
exit 0
fi
sha256="$(QUIET=1 nix-prefetch-svn "$svn_url" "$rev" | tail -1)"
if [ "$old_sha256" = "$sha256" ]; then
echo "No updates for linux-libre"
exit 0
fi
sed -i -e "s/rev = \".*\"/rev = \"$rev\"/" \
-e "s/sha256 = \".*\"/sha256 = \"$sha256\"/" "$path"
if [ -n "${COMMIT-}" ]; then
git commit -qm "linux_latest-libre: $old_rev -> $rev" "$path" \
$nixpkgs/pkgs/os-specific/linux/kernel/linux-libre.nix
echo "Updated linux_latest-libre $old_rev -> $rev"
fi