diff --git a/README.pod b/README.pod
index c892cb92..28eb9c75 100644
--- a/README.pod
+++ b/README.pod
@@ -117,7 +117,8 @@ Display the help message and quit.
 =item B<-a, --aur>
 
 When used with pacman extended operations, only search, download, build, install
-or update I<target(s)> from the AUR.
+or update I<target(s)> from the AUR. When combined with I<-Syu>, only the I<-Sy>
+operation is run for the repositories.
 
 =item B<-r, --repo>
 
diff --git a/libpacaur/checks.sh b/libpacaur/checks.sh
index 59a39d23..377ea40e 100644
--- a/libpacaur/checks.sh
+++ b/libpacaur/checks.sh
@@ -387,7 +387,7 @@ CheckUpdates() {
 
     if [[ ! "${opts[@]}" =~ "m" && ! " ${pacopts[@]} " =~ --foreign ]]; then
         [[ -n "${pkgs[@]}" ]] && pkgs=($(expac -Q '%n' "${pkgs[@]}"))
-        repopkgsQood=($($pacmanbin -Qunq ${pacopts[@]} ${pkgs[@]}))
+        repopkgsQood=($($pacmanbin -Qunq ${pkgs[@]}))
 
         if [[ -n "${repopkgsQood[@]}" && ! $quiet ]]; then
             repopkgsQver=($(expac -Q '%v' "${repopkgsQood[@]}"))
@@ -429,7 +429,7 @@ CheckUpdates() {
                 printf "${colorB}::${reset} ${colorM}%-${lrepo}s${reset}  ${colorW}%-${lname}s${reset}  ${colorR}%-${lQver}s${reset}  ->  ${colorG}%-${lSver}s${reset}  ${colorB}%-${lgrp}s${reset}  ${colorY}%s${reset}\n" "aur" "${aurpkgsAname[$i]}" "${aurpkgsQver[$i]}" "${aurpkgsAver[$i]}" " " "${aurpkgsQignore[$i]}"
             done
         else
-            tr ' ' '\n' <<< ${aurpkgsQood[@]}
+            tr ' ' '\n' <<< ${aurpkgsQood[@]} | sort -u
         fi
     fi
     # exit code
diff --git a/libpacaur/deps.sh b/libpacaur/deps.sh
index 0231e204..2ebe4a41 100644
--- a/libpacaur/deps.sh
+++ b/libpacaur/deps.sh
@@ -334,7 +334,20 @@ FindDepsAurError() {
         tsorterrdeps=(${tsorterrdeps[@]:1})
         FindDepsAurError ${tsorterrdeps[@]}
     else
-        errdepslist+=("$nexterrdep")
+        for i in "${!aurpkgs[@]}"; do
+            nextallerrdeps=($(GetJson "arrayvar" "$json" "Depends" "${aurpkgs[$i]}"))
+            nextallerrdeps+=($(GetJson "arrayvar" "$json" "MakeDepends" "${aurpkgs[$i]}"))
+            nextallerrdeps+=($(GetJson "arrayvar" "$json" "CheckDepends" "${aurpkgs[$i]}"))
+
+            # remove versioning
+            for j in "${!nextallerrdeps[@]}"; do
+                nextallerrdeps[$j]=$(awk -F ">|<|=" '{print $1}' <<< ${nextallerrdeps[$j]})
+            done
+
+            if [[ " ${nextallerrdeps[@]} " =~ " $currenterrdep " ]]; then
+                errdepslist+=("${aurpkgs[$i]}")
+            fi
+        done
     fi
 }
 
diff --git a/pacaur b/pacaur
index 2ba5dd87..65cafd97 100755
--- a/pacaur
+++ b/pacaur
@@ -31,6 +31,18 @@ userpacmandir="${XDG_CONFIG_HOME:-${HOME}/.config}/pacman"
 usercachedir="${XDG_CACHE_HOME:-${HOME}/.cache}/pacaur"
 tmpdir="${XDG_RUNTIME_DIR:-/tmp}"
 
+# preserve environment variables
+[[ -n ${PKGDEST} ]] && _PKGDEST=${PKGDEST}
+[[ -n ${SRCDEST} ]] && _SRCDEST=${SRCDEST}
+[[ -n ${SRCPKGDEST} ]] && _SRCPKGDEST=${SRCPKGDEST}
+[[ -n ${LOGDEST} ]] && _LOGDEST=${LOGDEST}
+[[ -n ${BUILDDIR} ]] && _BUILDDIR=${BUILDDIR}
+[[ -n ${PKGEXT} ]] && _PKGEXT=${PKGEXT}
+[[ -n ${SRCEXT} ]] && _SRCEXT=${SRCEXT}
+[[ -n ${GPGKEY} ]] && _GPGKEY=${GPGKEY}
+[[ -n ${PACKAGER} ]] && _PACKAGER=${PACKAGER}
+[[ -n ${CARCH} ]] && _CARCH=${CARCH}
+
 # source makepkg variables
 if [[ -r "$MAKEPKG_CONF" ]]; then
     source "$MAKEPKG_CONF"
@@ -43,6 +55,18 @@ else
     fi
 fi
 
+# restore environment variables
+PKGDEST=${_PKGDEST:-$PKGDEST}
+SRCDEST=${_SRCDEST:-$SRCDEST}
+SRCPKGDEST=${_SRCPKGDEST:-$SRCPKGDEST}
+LOGDEST=${_LOGDEST:-$LOGDEST}
+BUILDDIR=${_BUILDDIR:-$BUILDDIR}
+PKGEXT=${_PKGEXT:-$PKGEXT}
+SRCEXT=${_SRCEXT:-$SRCEXT}
+GPGKEY=${_GPGKEY:-$GPGKEY}
+PACKAGER=${_PACKAGER:-$PACKAGER}
+CARCH=${_CARCH:-$CARCH}
+
 # set default config variables
 editor="${VISUAL:-${EDITOR:-vi}}"           # build files editor
 displaybuildfiles=diff                      # display build files (none|diff|full)