diff --git a/packer b/packer
index 241efeb..5266d8b 100644
--- a/packer
+++ b/packer
@@ -1,5 +1,8 @@
 #!/bin/bash
-# Copyright Matthew Bruenig <matthewbruenig@gmail.com>
+#
+# Copyright (C) 2010 Matthew Bruenig <matthewbruenig@gmail.com>
+# Copyright (C) 2012 Mateusz Loskot <mateusz@loskot.net>
+#
 # 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
@@ -15,11 +18,9 @@
 
 [[ $PACMAN ]] || PACMAN="pacman"
 
-# set tmpfile stuff, clean tmpdir
-tmpdir="${TMPDIR:-/tmp}/packertmp-$UID"
-rm -rf "$tmpdir" &>/dev/null
-mkdir -p "$tmpdir"
-
+# configuration files
+packerconf='/etc/packer.conf'
+userpackerconf="$HOME/.packer.conf"
 makepkgconf='/etc/makepkg.conf'
 usermakepkgconf="$HOME/.makepkg.conf"
 pacmanconf='/etc/pacman.conf'
@@ -59,6 +60,7 @@ usage() {
   echo '    -Ss|-Ssq    - searches for package'
   echo '    -Si         - outputs info for package'
   echo '    -G          - download and extract aur tarball only'
+  echo '    -P          - purge cache content'
   echo
   echo '    --quiet     - only output package name for searches'
   echo '    --ignore    - takes a comma-separated list of packages to ignore'
@@ -84,6 +86,12 @@ runasroot() {
   fi
 }
 
+# Source packer.conf file
+sourcepackerconf() {
+  [[ -r "$packerconf" ]] && . "$packerconf"
+  [[ -r "$userpackerconf" ]] && . "$userpackerconf"
+}
+
 # Source makepkg.conf file
 sourcemakepkgconf() {
   . "$makepkgconf"
@@ -104,7 +112,7 @@ isignored() {
 # Tests whether $1 exists on the aur
 existsinaur() {
   rpcinfo "$1"
-  [[ "$(jshon -Qe type -u < "$tmpdir/$1.info")" = "info" ]]
+  [[ "$(jshon -Qe type -u < "$cachedir/$1.info")" = "info" ]]
 }
 
 # Tests whether $1 exists in pacman
@@ -130,7 +138,7 @@ existsinlocal() {
 # Scrapes the aur deps from PKGBUILDS and puts in globally available dependencies array
 scrapeaurdeps() {
   pkginfo "$1" "$preview"
-  . "$tmpdir/$1.PKGBUILD"
+  . "$cachedir/$1.PKGBUILD"
   IFS=$'\n'
   dependencies=( $(echo -e "${depends[*]}\n${makedepends[*]}" | sed -e 's/=.*//' -e 's/>.*//' -e 's/<.*//'| sort -u) )
   unset IFS
@@ -225,26 +233,26 @@ aurbar() {
 }
 
 rpcinfo() {
-  if ! [[ -f "$tmpdir/$1.info" ]]; then
-    curl -LfGs --data-urlencode "arg=$1" "$RPCURL=info" > "$tmpdir/$1.info"
+  if ! [[ -f "$cachedir/$1.info" ]]; then
+    curl -LfGs --data-urlencode "arg=$1" "$RPCURL=info" > "$cachedir/$1.info"
   fi
 }
 
 pkglink() {
   rpcinfo $1
-  echo "${PKGURL}$(jshon -Q -e results -e URLPath -u < "$tmpdir/$1.info")"
+  echo "${PKGURL}$(jshon -Q -e results -e URLPath -u < "$cachedir/$1.info")"
 }
 
 # downloads pkgbuild ($1), edits if $2 is set
 pkginfo() {
-  if ! [[ -f "$tmpdir/$1.PKGBUILD" ]]; then
+  if ! [[ -f "$cachedir/$1.PKGBUILD" ]]; then
     pkgpath=$(pkglink $1)
-    curl -Lfs "${pkgpath%/*}/PKGBUILD" > "$tmpdir/$1.PKGBUILD"
+    curl -Lfs "${pkgpath%/*}/PKGBUILD" > "$cachedir/$1.PKGBUILD"
     if [[ $2 ]]; then
       # rename for syntax highlighting
-      ln -sf "$tmpdir/$1.PKGBUILD" "$tmpdir/PKGBUILD"
-      confirm_edit "${COLOR6}Edit $1 PKGBUILD with \$EDITOR? [Y/n]${ENDCOLOR} " "$tmpdir/PKGBUILD"
-      rm -f "$tmpdir/PKGBUILD"
+      ln -sf "$cachedir/$1.PKGBUILD" "$cachedir/PKGBUILD"
+      confirm_edit "${COLOR6}Edit $1 PKGBUILD with \$EDITOR? [Y/n]${ENDCOLOR} " "$cachedir/PKGBUILD"
+      rm -f "$cachedir/PKGBUILD"
     fi
   fi
 }
@@ -254,7 +262,7 @@ aurversionisnewer() {
   rpcinfo "$1"
   unset aurversion
   if existsinaur "$1"; then
-    aurversion="$(jshon -Q -e results -e Version -u < "$tmpdir/$1.info")"
+    aurversion="$(jshon -Q -e results -e Version -u < "$cachedir/$1.info")"
     if [[ "$(LC_ALL=C vercmp "$aurversion" "$2")" -gt 0  ]]; then
       return 0
     fi
@@ -264,7 +272,7 @@ aurversionisnewer() {
 
 isoutofdate() {
   rpcinfo "$1"
-  [[ "$(jshon -Q -e results -e OutOfDate -u < "$tmpdir/$1.info")" = "1" ]]
+  [[ "$(jshon -Q -e results -e OutOfDate -u < "$cachedir/$1.info")" = "1" ]]
 }
 
 # $1 is prompt, $2 is file
@@ -280,7 +288,7 @@ confirm_edit() {
 
 # Installs packages from aur ($1 is package, $2 is dependency or explicit)
 aurinstall() {
-  dir="${TMPDIR:-/tmp}/packerbuild-$UID/$1"
+  dir="$PACKER_CACHEDIR/$1"
 
   # Prepare the installation directory
   # If there is an old directory and aurversion is not newer, use old directory
@@ -324,9 +332,9 @@ aurinstall() {
 
   [[ $? -ne 0 ]] && echo "The build failed." && return 1
   if  [[ $2 = dependency ]]; then
-    runasroot $PACMAN ${PACOPTS[@]} --asdeps -U $pkgname-*$PKGEXT
+    runasroot $PACMAN ${PACOPTS[@]} --asdeps -U $pkgname-$pkgver-$pkgrel*$PKGEXT
   elif [[ $2 = explicit ]]; then
-    runasroot $PACMAN ${PACOPTS[@]} -U $pkgname-*$PKGEXT
+    runasroot $PACMAN ${PACOPTS[@]} -U $pkgname-$pkgver-$pkgrel*$PKGEXT
   fi
 }
 
@@ -446,6 +454,14 @@ installhandling() {
   done
 }
 
+# Purges cached packages and creates empty cache ($1 cache location)
+purgecache() {
+	echo -e "${COLOR5}:: ${COLOR1}Purging aur cache in '$1'...${ENDCOLOR}"
+	if [[ -d $1 ]]; then
+		rm -rf "$1" &>/dev/null
+	fi
+}
+
 # proceed with installation prompt
 proceed() {
   read -n 1
@@ -474,6 +490,7 @@ while [[ $1 ]]; do
     '-Si') option=info ;;
     -S*u*) option=update ; pacmanarg="$1" ;;
     '-G') option=download ;;
+    '-P') option=purgecache ;;
     '-h'|'--help') usage ;;
     '--quiet') quiet='1' ;;
     '--ignore') ignorearg="$2" ; PACOPTS+=("--ignore" "$2") ; shift ;;
@@ -490,6 +507,28 @@ while [[ $1 ]]; do
   shift
 done
 
+# Load packer.conf
+sourcepackerconf
+if [[ -z $PACKER_CACHEDIR ]]; then
+	PACKER_CACHEDIR="${TMPDIR:-/tmp}/packertmp-$UID"
+fi
+echo -e "${COLOR5}:: ${COLOR1}Setting aur cache in '$PACKER_CACHEDIR'...${ENDCOLOR}"
+
+# Set cache location
+cachedir="$PACKER_CACHEDIR"
+
+# Clean cache, if requested
+if [[ $option = purgecache ]]; then
+		purgecache "$cachedir" || err "Failed to purge cache"
+		exit
+else
+	if ! $PACKER_KEEP_CACHE; then
+		purgecache "$cachedir"
+	fi
+fi
+# Recreate cache directory
+[[ -d "$cachedir" ]] || mkdir -p "$cachedir"
+
 # Sanity checks
 [[ $option ]] || option="searchinstall"
 [[ $option != "update" && -z $packageargs ]] && err "Must specify a package."
@@ -532,14 +571,14 @@ if [[ $option = update ]]; then
     for ((i=0; i<$total; i++)); do 
       pkg="${packages[i]%% *}"
       ver="${packages[i]##* }"
-      if [[ ! -s "$tmpdir/$pkg.PKGBUILD" ]]; then
+      if [[ ! -s "$cachedir/$pkg.PKGBUILD" ]]; then
         continue
       fi
       if isignored "$pkg"; then
         continue
       fi
       unset _darcstrunk _cvsroot _gitroot _svntrunk _bzrtrunk _hgroot
-      . "$tmpdir/$pkg.PKGBUILD"
+      . "$cachedir/$pkg.PKGBUILD"
       if [[ "$(LC_ALL=C vercmp "$pkgver-$pkgrel" "$ver")" -gt 0 ]]; then
         newpackages+=("$pkg")
       elif [[ ${_darcstrunk} || ${_cvsroot} || ${_gitroot} || ${_svntrunk} || ${_bzrtrunk} || ${_hgroot} ]]; then 
@@ -626,18 +665,18 @@ if [[ $option = search || $option = searchinstall ]]; then
   for package in "${packageargs[@]}"; do
     curl -LfGs --data-urlencode "arg=$package" "$RPCURL=search" | \
     jshon -Q -e results -a -e Name -u -p -e Version -u -p -e NumVotes -u -p -e Description -u | \
-    sed 's/^$/-/' |  paste -s -d "\t\t\t\n" | sort -nr -k 3 > "$tmpdir/$package.search" &
+    sed 's/^$/-/' |  paste -s -d "\t\t\t\n" | sort -nr -k 3 > "$cachedir/$package.search" &
   done
   wait
-  cp "$tmpdir/${packageargs[0]}.search" "$tmpdir/search.results"
+  cp "$cachedir/${packageargs[0]}.search" "$cachedir/search.results"
   for ((i=1 ; i<${#packageargs[@]} ; i++)); do
-    grep -xFf "$tmpdir/search.results" "$tmpdir/${packageargs[$i]}.search" > "$tmpdir/search.results-2"
-    mv "$tmpdir/search.results-2" "$tmpdir/search.results"
+    grep -xFf "$cachedir/search.results" "$cachedir/${packageargs[$i]}.search" > "$cachedir/search.results-2"
+    mv "$cachedir/search.results-2" "$cachedir/search.results"
   done
-  sed -i '/^$/d' "$tmpdir/search.results"
+  sed -i '/^$/d' "$cachedir/search.results"
 
   # Prepare tmp file and arrays
-  IFS=$'\n' read -rd '' -a aurname < <(cut -f 1 "$tmpdir/search.results")
+  IFS=$'\n' read -rd '' -a aurname < <(cut -f 1 "$cachedir/search.results")
   aurtotal="${#aurname[@]}"
   alltotal="$(($pactotal+$aurtotal))"
   # Echo out the -Ss formatted package information
@@ -646,15 +685,15 @@ if [[ $option = search || $option = searchinstall ]]; then
   if [[ $option = search ]]; then
     if [[ $quiet ]]; then
       printf "%s\n" ${aurname[@]}
-    elif [[ -s "$tmpdir/search.results" ]]; then
-      printf "${COLOR3}aur/${COLOR1}%s ${COLOR2}%s${ENDCOLOR} (%s)\n    %s\n" $(cat "$tmpdir/search.results")
+    elif [[ -s "$cachedir/search.results" ]]; then
+      printf "${COLOR3}aur/${COLOR1}%s ${COLOR2}%s${ENDCOLOR} (%s)\n    %s\n" $(cat "$cachedir/search.results")
     fi
   else
     # interactive
     if [[ $quiet ]]; then
-      nl -v ${pactotal:-0} -w 1 -s ' ' <(cut -f 1 "$tmpdir/search.results")
-    elif [[ -s "$tmpdir/search.results" ]]; then
-      printf "%d ${COLOR3}aur/${COLOR1}%s ${COLOR2}%s${ENDCOLOR} (%s)\n    %s\n" $(nl -v ${pactotal:-0} -w 1 < "$tmpdir/search.results")
+      nl -v ${pactotal:-0} -w 1 -s ' ' <(cut -f 1 "$cachedir/search.results")
+    elif [[ -s "$cachedir/search.results" ]]; then
+      printf "%d ${COLOR3}aur/${COLOR1}%s ${COLOR2}%s${ENDCOLOR} (%s)\n    %s\n" $(nl -v ${pactotal:-0} -w 1 < "$cachedir/search.results")
     fi
   fi | fmt -"$_WIDTH" -s
   unset IFS
@@ -689,8 +728,8 @@ if [[ $option = search || $option = searchinstall ]]; then
   fi
 
   # Remove the tmpfiles
-  rm -f "$tmpdir/*search" &>/dev/null
-  rm -f "$tmpdir/search.result" &>/dev/null
+  rm -f "$cachedir/*search" &>/dev/null
+  rm -f "$cachedir/search.result" &>/dev/null
   exit
 fi
 
@@ -710,8 +749,8 @@ if [[ $option = info ]]; then
       exit
     else # Check to see if it is in the aur
       pkginfo "$package" "$preview"
-      [[ -s "$tmpdir/$package.PKGBUILD" ]] || err "${COLOR7}error:${ENDCOLOR} package '$package' was not found"
-      . "$tmpdir/$package.PKGBUILD"
+      [[ -s "$cachedir/$package.PKGBUILD" ]] || err "${COLOR7}error:${ENDCOLOR} package '$package' was not found"
+      . "$cachedir/$package.PKGBUILD"
 
       # Echo out the -Si formatted package information
       # Retrieve each element in order and echo them immediately
diff --git a/packer.8 b/packer.8
index f56b7d1..e9a277a 100644
--- a/packer.8
+++ b/packer.8
@@ -53,6 +53,11 @@ Show information for a package\&.
 Download and extract AUR package tarballs, but don\(cqt install anything\&.
 .RE
 .PP
+\fB\-P\fR
+.RS 4
+Purge cache content\&.
+.RE
+.PP
 \fB\-h\fR
 .RS 4
 Show packer usage\&.
@@ -197,7 +202,24 @@ packer \fIname\fR
 .RE
 .SH "CONFIGURATION"
 .sp
-Packer uses these settings in /etc/pacman\&.conf:
+Optionally, packer uses these settings sourced from global configuration
+file in /etc/packer\&.conf or from user's file in ~/.packer.conf:
+.sp
+\fBPACKER_CACHEDIR\fR
+.RS 4
+.sp
+Cache directory where packages are downloaded and built\&. If not specified,
+the TMPDIR variable is used if defined, otherwise cache is created
+in /tmp/packertmp-$UID\&.
+.RE
+.PP
+\fBPACKER_KEEP_CACHE\fR
+.RS 4
+.sp
+Flag indicates if cache should be persistent, false by default\&.
+.RE
+.PP
+Packer also uses these settings in /etc/pacman\&.conf:
 .sp
 .RS 4
 .ie n \{\
@@ -213,11 +235,11 @@ IgnorePkg
 Packer output will be colorized unless the environmental variable COLOR is set to `NO'.
 .sp
 To manually edit files, packer uses the EDITOR variable\&. If EDITOR is not set then the default editor is vi\&.
-.sp
-Packages are built in the TMPDIR path\&. If the TMPDIR variable is not set then the default path is /tmp
 .SH "SEE ALSO"
 .sp
 \fBpacman\fR(8)
 .SH "AUTHORS"
 .sp
 Matthew Bruenig <matthewbruenig@gmail\&.com>
+.sp
+Mateusz Loskot <mateusz@loskot\&.net> - packan.conf and configurable cache support
diff --git a/packer.conf b/packer.conf
new file mode 100644
index 0000000..9f9d3d7
--- /dev/null
+++ b/packer.conf
@@ -0,0 +1,9 @@
+#
+# /etc/packer.conf - global configuration file for packer
+#
+#-- Cache directory where packages are downloaded and built.
+#-- If not specified, the TMPDIR variable is used if defined,
+# otherwise cache is created in /tmp/packertmp-$UID.
+PACKER_CACHEDIR=${TMPDIR:-/tmp}/packertmp-$UID
+#-- Flag indicates if cache should be persistent, false by default.
+PACKER_KEEP_CACHE=false