A wrapper script to run yay and incrementally build a list of packages to ignore if they error out.

yay-update-ignore-errors

#!/bin/sh
# Wrapper script around yay to try to ignore errors
# Copyright © 2019 Ashkan Kiani

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


lightred() { echo -e "\033[1;31m$*\033[0m"; }
blue() { echo -e "\033[1;34m$*\033[0m"; }
dump() { echo "$0: $*" >&2; }
say() { echo "$0: $(blue "$*")" >&2; }
yell() { echo "$0: $(lightred "$*")" >&2; }
die() { yell "$*"; exit 111; }
try() { "$@" || die "cannot $*"; }
asuser() { sudo su - "$1" -c "${*:2}"; }
need_var() { test -n "${!1}" || die "$1 must be defined"; }
need_vars() { for var in "$@"; do need_var $var; done; }
has_bin() { which "$1" 2>&1 >/dev/null; }
need_exe() { has_bin "$1"|| die "'$1' not found in PATH"; }
need_bin() { need_exe "$1"; }
strictmode() { set -eo pipefail; }
nostrictmode() { set +eo pipefail; }

export SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

strictmode

strip_color_codes() {
	sed 's/\e\[[\d;]*m//g;'
}

cd $(mktemp -d /tmp/tmp.XXXXXX)

IGNORES=dummypackage

for PACKAGE in "$@"; do
	IGNORES=$IGNORES,$PACKAGE
done

for ITERATION in $(seq 1 10); do
	LOG_FILE=run-$ITERATION.log
	nostrictmode
	{
		yay -Syu --devel --ignore $IGNORES && exit 0
	} | tee $LOG_FILE
	strictmode
	say $PWD/$LOG_FILE
	say $(tail -n1 $LOG_FILE)
	case $(tail -n1 $LOG_FILE) in
		Error\ downloading\ sources:\ *)
			IGNORES=$IGNORES,$(tail -n1 $LOG_FILE | grep -o '[^ ]*$' | strip_color_codes)
			yell $IGNORES
			;;
		Error\ making:\ *)
			IGNORES=$IGNORES,$(tail -n1 $LOG_FILE | grep -o '[^ ]*$' | strip_color_codes)
			yell $IGNORES
			;;
		*)
			exit 1
			;;
	esac
done

The list of errors is not comprehensive (e.g. Error making, Error downloading sources) and I will add more as I encounter them unless otherwise contributred by others.