pin-calf.sh
· 2.4 KiB · Bash
Raw
#!/usr/bin/env bash
# pin-calf-0.90.8-4.sh
# Downgrade calf to 0.90.8-4 and pin it. Use --unpin to remove the pin.
set -euo pipefail
PKG="calf"
PKGVER="0.90.8-4"
PKGFILE="${PKG}-${PKGVER}-x86_64.pkg.tar.zst"
URL="https://archive.archlinux.org/packages/c/${PKG}/${PKGFILE}"
PACCONF="/etc/pacman.conf"
usage() {
cat <<EOF
Usage:
$0 # downgrade to ${PKGVER} and pin
$0 --unpin # remove pin for ${PKG}
EOF
}
ensure_root() {
if [[ $EUID -ne 0 ]]; then
echo "Re-running with sudo..."
exec sudo -E "$0" "$@"
fi
}
backup_conf() {
[[ -f "${PACCONF}.bak" ]] || cp -a "$PACCONF" "${PACCONF}.bak"
}
pin_pkg() {
backup_conf
# If IgnorePkg exists, ensure 'calf' is present. Otherwise add a line
# under [options]. This edit is idempotent.
awk -v pkg="$PKG" '
BEGIN { done=0 }
/^\[options\]/ {
print; inopt=1; next
}
inopt && /^IgnorePkg\s*=.*/ {
if ($0 ~ ("(^|\\s)" pkg "(\\s|$)")) { print; done=1 }
else { print $0 " " pkg; done=1 }
inopt=0; next
}
{ print }
END {
if (!done) {
if (inopt) {
print "IgnorePkg = " pkg
} else {
print ""; print "[options]"; print "IgnorePkg = " pkg
}
}
}
' "$PACCONF" > "${PACCONF}.new"
mv "${PACCONF}.new" "$PACCONF"
}
unpin_pkg() {
backup_conf
awk -v pkg="$PKG" '
{
if ($0 ~ /^IgnorePkg\s*=/) {
# remove only exact word matches of pkg
gsub("(^|[ \t])" pkg "([ \t]|$)", " ")
# normalize spaces
sub(/^[ \t]+/, "")
sub(/[ \t]+$/, "")
sub(/[ \t]+/, " ")
# drop line if now just "IgnorePkg =" with nothing after
if ($0 ~ /^IgnorePkg\s*=\s*$/) next
}
print
}
' "$PACCONF" > "${PACCONF}.new"
mv "${PACCONF}.new" "$PACCONF"
}
install_pkg() {
tmp="$(mktemp -d)"
trap 'rm -rf "$tmp"' EXIT
cd "$tmp"
echo "Downloading ${URL} ..."
curl -fL --retry 3 -O "$URL"
echo "Installing ${PKGFILE} ..."
pacman -U --noconfirm "./${PKGFILE}"
echo "Installed:"
pacman -Qi "$PKG" | sed -n '1,12p'
}
main() {
if [[ "${1:-}" == "--help" || "${1:-}" == "-h" ]]; then
usage; exit 0
fi
if [[ "${1:-}" == "--unpin" ]]; then
ensure_root "$@"
unpin_pkg
echo "Unpinned ${PKG}. You may now upgrade normally."
exit 0
fi
ensure_root "$@"
install_pkg
pin_pkg
echo
echo "Pinned ${PKG} at ${PKGVER} via IgnorePkg in ${PACCONF}."
echo "To undo: sudo $0 --unpin"
}
main "$@"
| 1 | #!/usr/bin/env bash |
| 2 | # pin-calf-0.90.8-4.sh |
| 3 | # Downgrade calf to 0.90.8-4 and pin it. Use --unpin to remove the pin. |
| 4 | |
| 5 | set -euo pipefail |
| 6 | |
| 7 | PKG="calf" |
| 8 | PKGVER="0.90.8-4" |
| 9 | PKGFILE="${PKG}-${PKGVER}-x86_64.pkg.tar.zst" |
| 10 | URL="https://archive.archlinux.org/packages/c/${PKG}/${PKGFILE}" |
| 11 | PACCONF="/etc/pacman.conf" |
| 12 | |
| 13 | usage() { |
| 14 | cat <<EOF |
| 15 | Usage: |
| 16 | $0 # downgrade to ${PKGVER} and pin |
| 17 | $0 --unpin # remove pin for ${PKG} |
| 18 | EOF |
| 19 | } |
| 20 | |
| 21 | ensure_root() { |
| 22 | if [[ $EUID -ne 0 ]]; then |
| 23 | echo "Re-running with sudo..." |
| 24 | exec sudo -E "$0" "$@" |
| 25 | fi |
| 26 | } |
| 27 | |
| 28 | backup_conf() { |
| 29 | [[ -f "${PACCONF}.bak" ]] || cp -a "$PACCONF" "${PACCONF}.bak" |
| 30 | } |
| 31 | |
| 32 | pin_pkg() { |
| 33 | backup_conf |
| 34 | # If IgnorePkg exists, ensure 'calf' is present. Otherwise add a line |
| 35 | # under [options]. This edit is idempotent. |
| 36 | awk -v pkg="$PKG" ' |
| 37 | BEGIN { done=0 } |
| 38 | /^\[options\]/ { |
| 39 | print; inopt=1; next |
| 40 | } |
| 41 | inopt && /^IgnorePkg\s*=.*/ { |
| 42 | if ($0 ~ ("(^|\\s)" pkg "(\\s|$)")) { print; done=1 } |
| 43 | else { print $0 " " pkg; done=1 } |
| 44 | inopt=0; next |
| 45 | } |
| 46 | { print } |
| 47 | END { |
| 48 | if (!done) { |
| 49 | if (inopt) { |
| 50 | print "IgnorePkg = " pkg |
| 51 | } else { |
| 52 | print ""; print "[options]"; print "IgnorePkg = " pkg |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | ' "$PACCONF" > "${PACCONF}.new" |
| 57 | mv "${PACCONF}.new" "$PACCONF" |
| 58 | } |
| 59 | |
| 60 | unpin_pkg() { |
| 61 | backup_conf |
| 62 | awk -v pkg="$PKG" ' |
| 63 | { |
| 64 | if ($0 ~ /^IgnorePkg\s*=/) { |
| 65 | # remove only exact word matches of pkg |
| 66 | gsub("(^|[ \t])" pkg "([ \t]|$)", " ") |
| 67 | # normalize spaces |
| 68 | sub(/^[ \t]+/, "") |
| 69 | sub(/[ \t]+$/, "") |
| 70 | sub(/[ \t]+/, " ") |
| 71 | # drop line if now just "IgnorePkg =" with nothing after |
| 72 | if ($0 ~ /^IgnorePkg\s*=\s*$/) next |
| 73 | } |
| 74 | |
| 75 | } |
| 76 | ' "$PACCONF" > "${PACCONF}.new" |
| 77 | mv "${PACCONF}.new" "$PACCONF" |
| 78 | } |
| 79 | |
| 80 | install_pkg() { |
| 81 | tmp="$(mktemp -d)" |
| 82 | trap 'rm -rf "$tmp"' EXIT |
| 83 | cd "$tmp" |
| 84 | echo "Downloading ${URL} ..." |
| 85 | curl -fL --retry 3 -O "$URL" |
| 86 | echo "Installing ${PKGFILE} ..." |
| 87 | pacman -U --noconfirm "./${PKGFILE}" |
| 88 | echo "Installed:" |
| 89 | pacman -Qi "$PKG" | sed -n '1,12p' |
| 90 | } |
| 91 | |
| 92 | main() { |
| 93 | if [[ "${1:-}" == "--help" || "${1:-}" == "-h" ]]; then |
| 94 | usage; exit 0 |
| 95 | fi |
| 96 | |
| 97 | if [[ "${1:-}" == "--unpin" ]]; then |
| 98 | ensure_root "$@" |
| 99 | unpin_pkg |
| 100 | echo "Unpinned ${PKG}. You may now upgrade normally." |
| 101 | exit 0 |
| 102 | fi |
| 103 | |
| 104 | ensure_root "$@" |
| 105 | install_pkg |
| 106 | pin_pkg |
| 107 | echo |
| 108 | echo "Pinned ${PKG} at ${PKGVER} via IgnorePkg in ${PACCONF}." |
| 109 | echo "To undo: sudo $0 --unpin" |
| 110 | } |
| 111 | |
| 112 | main "$@" |
| 113 |