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#! /bin/bash
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation. See the LICENSE file for details.
# sbshadow: reconcile upstream shadowing against personal/ and pentesting/.
#
# Shadow: upstream package whose name matches a personal/pentesting package is
# git rm'd. Unshadow: upstream package no longer carried there is restored from
# the pristine $UPSTREAM branch that danix-current was cut from. Then regenerates
# phantom-dep hintfiles with mkhint -F.
#
# Called by slackrepo_setup_SBo-danix.sh and by sbpull after a subtree pull.
#
# Usage: sbshadow [--yes|--no]
# no flag show the plan and ask before changing anything
# --yes apply the plan without asking
# --no show the plan only, tree unchanged (preview)
# SBO_REPO overrides the repo path (used to test against a throwaway repo).
set -euo pipefail
answer=""
case "${1:-}" in
--yes) answer=y ;;
--no) answer=n ;;
"") ;;
*) echo "usage: sbshadow [--yes|--no]" >&2; exit 2 ;;
esac
REPO="${SBO_REPO:-/var/lib/sbopkg/SBo-danix}"
UPSTREAM="current"
cd "$REPO"
# packages carried in the overlays
declare -A mine=()
for d in personal/*/ pentesting/*/; do
p=$(basename "$d")
[[ -f "$d$p.SlackBuild" ]] && mine[$p]=1
done
# category/pkg for every real package in pristine upstream
to_rm=() to_restore=()
while IFS= read -r path; do
if [[ -n "${mine[${path#*/}]:-}" ]]; then
[[ -d "$path" ]] && to_rm+=("$path")
else
[[ -d "$path" ]] || to_restore+=("$path")
fi
done < <(git ls-tree -r --name-only "$UPSTREAM" \
| grep -E '^[^/]+/([^/]+)/\1\.SlackBuild$' | xargs -r -n1 dirname)
if (( ${#to_rm[@]} + ${#to_restore[@]} == 0 )); then
echo "sbshadow: nothing to shadow or unshadow."
else
echo
(( ${#to_rm[@]} )) && printf 'shadow: %s\n' "${to_rm[@]}"
(( ${#to_restore[@]} )) && printf 'unshadow: %s\n' "${to_restore[@]}"
echo
if [[ -n $answer ]]; then
confirm=$answer
else
read -rp "Proceed? [y/N] " confirm
fi
if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
echo "sbshadow: aborted, tree unchanged."
else
(( ${#to_rm[@]} )) && git rm -rq -- "${to_rm[@]}"
(( ${#to_restore[@]} )) && git checkout "$UPSTREAM" -- "${to_restore[@]}"
git commit -qm "shadow: reconcile upstream against personal/pentesting"
echo "sbshadow: shadowed ${#to_rm[@]}, unshadowed ${#to_restore[@]}."
fi
fi
# ── regenerate phantom-dep hintfiles (mkhint owns them) ───────────────────────
# Runs even with nothing to shadow (a subtree pull can change REQUIRES), but
# not on --no: a preview leaves the hints alone too.
# mkhint reads ~/.config/mkhint/phantom-deps; missing tool = harmless skip.
if [[ $answer == n ]]; then
echo
echo "sbshadow: preview, phantom-dep hintfiles not regenerated."
elif command -v mkhint >/dev/null 2>&1; then
echo
echo "Regenerating phantom-dep hintfiles (mkhint -F)..."
mkhint -F
else
echo "NOTE: mkhint not found; skipping hintfile regen. Run 'mkhint -F' manually." >&2
fi
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