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@@ -10,6 +10,9 @@
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CAU_PACMAN_COUNT=0
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CAU_PACMAN_PENDING=''
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# Packages that had to be skipped so the rest of the upgrade could go through.
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CAU_PACMAN_HELD=''
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# Base flags for every unattended pacman invocation.
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cau_pacman_flags() {
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printf '%s\n' --noconfirm --color never --noprogressbar --disable-download-timeout
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@@ -55,6 +58,8 @@ _cau_pacman_classify() {
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if grep -qiE 'are in conflict|unresolvable package conflicts' "$log"; then
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printf 'conflict\n'
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elif grep -qiE 'could not satisfy dependencies|breaks dependency|unable to satisfy dependency' "$log"; then
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printf 'dependency\n'
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elif grep -qiE 'signature from .* is (unknown trust|marginal trust|invalid)|invalid or corrupted package \(PGP signature\)|key ".*" is unknown|keyring is not writable' "$log"; then
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printf 'keyring\n'
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elif grep -qiE 'exists in filesystem' "$log"; then
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@@ -64,6 +69,25 @@ _cau_pacman_classify() {
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fi
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}
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# _cau_pacman_blockers <logfile>
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# The packages standing in the way of an otherwise fine upgrade. pacman names
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# them in its dependency errors:
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#
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# :: removing libperconaserverclient breaks dependency 'libperconaserverclient'
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# required by heidisql-qt6-bin
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# :: unable to satisfy dependency 'foo' required by bar
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#
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# In the first form the package being removed is the one to keep; in the second
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# it is the package that cannot be installed.
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_cau_pacman_blockers() {
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local log="$1"
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{
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sed -nE "s/.*removing ([^ ]+) breaks dependency.*/\\1/p" "$log"
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sed -nE "s/.*unable to satisfy dependency '[^']*' required by ([^ ]+).*/\\1/p" "$log"
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} | grep -E '^[A-Za-z0-9@._+-]+$' | sort -u
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}
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# cau_pacman_update
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# Returns 0 on success (including "nothing to do"), 1 on a failure the user
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# needs to hear about. CAU_PACMAN_COUNT holds how many packages moved.
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@@ -90,68 +114,92 @@ cau_pacman_update() {
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mapfile -t flags < <(cau_pacman_flags)
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log="$(mktemp)" || return 1
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if pacman -Syu "${flags[@]}" > "$log" 2>&1; then
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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rm -f "$log"
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return 0
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fi
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# Recovery loop rather than a single retry: fixing one problem regularly
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# uncovers the next (a conflict resolved into a dependency error, say).
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# Each remedy is applied at most once, so this always terminates.
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local -a extra=() blockers=() tried=()
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local attempt=0 b
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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kind="$(_cau_pacman_classify "$log")"
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cau_warn "pacman -Syu failed ($kind)"
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case "$kind" in
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keyring)
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# A stale keyring is the one failure that is always safe to fix
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# automatically, and it blocks everything else until it is.
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cau_info "Refreshing keyrings and retrying"
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local -a keyrings=()
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pacman -Qq archlinux-keyring &> /dev/null && keyrings+=(archlinux-keyring)
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pacman -Qq cachyos-keyring &> /dev/null && keyrings+=(cachyos-keyring)
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if (( ${#keyrings[@]} )); then
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cau_run_logged pacman -Sy --noconfirm --color never "${keyrings[@]}" || true
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fi
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if pacman -Syu "${flags[@]}" > "$log" 2>&1; then
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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rm -f "$log"
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return 0
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fi
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while true; do
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if pacman -Syu "${flags[@]}" "${extra[@]}" > "$log" 2>&1; then
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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;;
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conflict)
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# A package that has to replace another one. --noconfirm already
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# answers "Replace X with Y?" affirmatively; what it declines is
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# ":: X and Y are in conflict. Remove Y? [y/N]". --ask is pacman's
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# question bitmask: 4 = CONFLICT_PKG, 16 = REMOVE_PKGS.
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if [[ $CFG_RESOLVE_CONFLICTS != yes ]]; then
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cau_error "Package conflict requires a decision (AutoResolveConflicts is off)"
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rm -f "$log"
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return 1
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fi
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cau_info "Resolving package conflicts automatically and retrying"
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if pacman -Syu "${flags[@]}" --ask=20 > "$log" 2>&1; then
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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grep -E '^(removing|replacing) ' "$log" 2>/dev/null \
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| while read -r line; do cau_info " $line"; done
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rm -f "$log"
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return 0
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fi
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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;;
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filesystem)
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# Untracked files in the way. Forcing --overwrite here could
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# silently clobber something the user put there deliberately, so
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# this one stays a human decision.
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cau_error "Files on disk conflict with the update; manual review needed"
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grep -E '^(removing|replacing) ' "$log" 2>/dev/null \
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| while read -r line; do cau_info " $line"; done
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rm -f "$log"
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return 1
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;;
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esac
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return 0
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fi
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cat "$log" >> "$CAU_RUNLOG" 2>/dev/null
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kind="$(_cau_pacman_classify "$log")"
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cau_warn "pacman -Syu failed ($kind)"
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if (( ++attempt > 3 )) || [[ " ${tried[*]} " == *" $kind "* ]]; then
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break
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fi
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tried+=("$kind")
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case "$kind" in
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keyring)
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# A stale keyring is the one failure that is always safe to fix
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# automatically, and it blocks everything else until it is.
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cau_info "Refreshing keyrings and retrying"
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local -a keyrings=()
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pacman -Qq archlinux-keyring &> /dev/null && keyrings+=(archlinux-keyring)
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pacman -Qq cachyos-keyring &> /dev/null && keyrings+=(cachyos-keyring)
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if (( ${#keyrings[@]} )); then
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cau_run_logged pacman -Sy --noconfirm --color never "${keyrings[@]}" || true
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fi
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;;
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conflict)
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# A package that has to replace another one. --noconfirm already
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# answers "Replace X with Y?" affirmatively; what it declines is
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# ":: X and Y are in conflict. Remove Y? [y/N]". --ask is pacman's
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# question bitmask: 4 = CONFLICT_PKG, 16 = REMOVE_PKGS.
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if [[ $CFG_RESOLVE_CONFLICTS != yes ]]; then
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cau_error "Package conflict requires a decision (AutoResolveConflicts is off)"
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break
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fi
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cau_info "Resolving package conflicts automatically and retrying"
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extra+=(--ask=20)
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;;
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dependency)
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# Something installed still depends on a package the repos want
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# to drop or replace - almost always an AUR package that has not
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# caught up yet. Nothing here can fix that, and it is not worth
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# failing over: letting one stuck package block every other
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# update indefinitely is far worse on an unattended machine.
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# Hold the blockers back and upgrade everything else.
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mapfile -t blockers < <(_cau_pacman_blockers "$log")
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if (( ${#blockers[@]} == 0 )); then
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cau_error "Dependency problem with no package to hold back"
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break
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fi
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for b in "${blockers[@]}"; do
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extra+=(--ignore "$b")
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done
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CAU_PACMAN_HELD="${blockers[*]}"
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cau_warn "Holding back ${blockers[*]} and retrying without them"
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;;
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filesystem)
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# Untracked files in the way. Forcing --overwrite here could
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# silently clobber something the user put there deliberately, so
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# this one stays a human decision.
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cau_error "Files on disk conflict with the update; manual review needed"
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break
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;;
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*)
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break
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;;
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esac
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done
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rm -f "$log"
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CAU_PACMAN_COUNT=0
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CAU_PACMAN_HELD=''
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return 1
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}
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Felitendo