set_generate.sh

BADSLOTS=(
  "dev-lang/perl:0/5.24"
  "x11-libs/gtk+:3/3"
  "net-libs/gnutls:0/0"
)

PHASES=(
    "depend"
    "rdepend"
    "pdepend"
)

>/tmp/rebuild_me.1
exec 3<>/tmp/rebuild_me.1
>/tmp/rebuild_me

function get_ebuilds() {
  local phase atom
  phase=$1
  atom=$2
  echo -n "Querying for ${atom} in ${phase}: " >>/dev/stderr
  qdepends --nocolor "--${phase}" --quiet --query "${atom}" | wc -l >&2
  qdepends --nocolor "--${phase}" --quiet --query "${atom}"
}
function get_ebuild_slots() {
  xargs qdepends --nocolor --quiet -k SLOT | sed 's/: /:/'
}
function format_slots() {
  xargs qatom --quiet --nocolor --format "%{CATEGORY}/%{PN}%[SLOT]"  | sed -r 's|:([^/]*)/[^/]*|:\1|' 
}

for SLOT in "${BADSLOTS[@]}"; do 
  for PHASE in "${PHASES[@]}"; do
    get_ebuilds "${PHASE}" "${SLOT}=" | get_ebuild_slots | format_slots >&3 
    sort -u /tmp/rebuild_me.1 > /tmp/rebuild_me
    echo -n " ... total rebuilds so far: " >&2
    wc -l </tmp/rebuild_me >&2
  done
done

echo "Copy /tmp/rebuild_me to /etc/portage/sets/ and "
echo " try emerge -va1 -k n @rebuild_me"