Change TorBrowser startup script in order for it to setup needed files
outside guix store. Remove tests which are not needed on guix system.

--- torbrowser-68.10.0esr-9.5-1/tbb-scripts/RelativeLink/start-tor-browser.orig    2020-07-05 18:47:40.685485004 -0300
+++ torbrowser-68.10.0esr-9.5-1/tbb-scripts/RelativeLink/start-tor-browser 2020-07-23 18:13:32.426282743 -0300
@@ -5,6 +5,14 @@
 #
 # Copyright 2017 The Tor Project.  See LICENSE for licensing information.
 
+TBB_HOME="${HOME}/.local/share/torbrowser"
+TBB_LOGFILE="${TBB_HOME}/torbrowser.log"
+TBB_DATA="${TBB_HOME}/Data"
+TBB_PROFILE="${TBB_DATA}/Browser/profile.default"
+TBB_STORE_PATH=$(dirname $(realpath "$0"))
+TBB_STORE_DATA="${TBB_STORE_PATH}/TorBrowser/Data"
+TORRC="${TBB_DATA}/Tor/torrc-defaults"
+
 complain_dialog_title="Tor Browser"
 
 # First, make sure DISPLAY is set.  If it isn't, we're hosed; scream
@@ -134,8 +142,8 @@
           ;;
       -l | --log)
           if [ -z "$2" -o "${2:0:1}" == "-" ]; then
-             printf "Logging Tor Browser debug information to tor-browser.log\n"
-             logfile="../tor-browser.log"
+             printf "Logging Tor Browser debug information to torbrowser.log\n"
+             logfile="${TBB_LOGFILE}"
           elif [ "${2:0:1}" == "/" -o "${2:0:1}" == "~" ]; then
              printf "Logging Tor Browser debug information to %s\n" "$2"
              logfile="$2"
@@ -187,41 +195,22 @@
 	export XAUTHORITY
 fi
 
-# If this script is being run through a symlink, we need to know where
-# in the filesystem the script itself is, not where the symlink is.
-myname="$0"
-if [ -L "$myname" ]; then
-	# XXX readlink is not POSIX, but is present in GNU coreutils
-	# and on FreeBSD.  Unfortunately, the -f option (which follows
-	# a whole chain of symlinks until it reaches a non-symlink
-	# path name) is a GNUism, so we have to have a fallback for
-	# FreeBSD.  Fortunately, FreeBSD has realpath instead;
-	# unfortunately, that's also non-POSIX and is not present in
-	# GNU coreutils.
-	#
-	# If this launcher were a C program, we could just use the
-	# realpath function, which *is* POSIX.  Too bad POSIX didn't
-	# make that function accessible to shell scripts.
-
-	# If realpath is available, use it; it Does The Right Thing.
-	possibly_my_real_name="`realpath "$myname" 2>/dev/null`"
-	if [ "$?" -eq 0 ]; then
-		myname="$possibly_my_real_name"
-	else
-		# realpath is not available; hopefully readlink -f works.
-		myname="`readlink -f "$myname" 2>/dev/null`"
-		if [ "$?" -ne 0 ]; then
-			# Ugh.
-			complain "start-tor-browser cannot be run using a symlink on this operating system."
-		fi
-	fi
+# Try to be agnostic to where we're being started from, check if files are on its
+# default paths and chdir to TBB_HOME
+if [ -e "${TORRC}" ]; then
+   cd "${TBB_HOME}"
+else
+   mkdir -p "${TBB_HOME}"
+   cp -R "${TBB_STORE_DATA}" "${TBB_HOME}"
+   chmod -R 700 "${TBB_HOME}"
+   mkdir -p "${TBB_PROFILE}"
+   echo "user_pref(\"extensions.torlauncher.torrc-defaults_path\", \"${TORRC}\");"\
+     > "${TBB_PROFILE}/user.js"
+   echo "ClientTransportPlugin meek_lite,obfs2,obfs3,obfs4,scramblesuit exec ${TBB_STORE_PATH}/TorBrowser/Tor/PluggableTransports/obfs4proxy"\
+     >> "${TORRC}"
+   cd "${TBB_HOME}"
 fi
 
-# Try to be agnostic to where we're being started from, chdir to where
-# the script is.
-mydir="`dirname "$myname"`"
-test -d "$mydir" && cd "$mydir"
-
 # If ${PWD} results in a zero length string, we can try something else...
 if [ ! "${PWD}" ]; then
 	# "hacking around some braindamage"
@@ -236,16 +225,9 @@
   ln -nsf ~/.config/ibus/bus .config/ibus
 fi
 
-# Fix up .desktop Icon and Exec Paths, and update the .desktop file from the
-# canonical version if it was changed by the updater.
-cp start-tor-browser.desktop ../
-sed -i -e "s,^Name=.*,Name=Tor Browser,g" ../start-tor-browser.desktop
-sed -i -e "s,^Icon=.*,Icon=$PWD/browser/chrome/icons/default/default128.png,g" ../start-tor-browser.desktop
-sed -i -e "s,^Exec=.*,Exec=sh -c '\"$PWD/start-tor-browser\" --detach || ([ !  -x \"$PWD/start-tor-browser\" ] \&\& \"\$(dirname \"\$*\")\"/Browser/start-tor-browser --detach)' dummy %k,g" ../start-tor-browser.desktop
-
 if [ "$register_desktop_app" -eq 1 ]; then
 	mkdir -p "$HOME/.local/share/applications/"
-	cp ../start-tor-browser.desktop "$HOME/.local/share/applications/"
+	cp "${TBB_STORE_PATH}/start-tor-browser.desktop" "$HOME/.local/share/applications/"
 	update-desktop-database "$HOME/.local/share/applications/"
 	printf "Tor Browser has been registered as a desktop app for this user in ~/.local/share/applications/\n"
 	exit 0
@@ -265,21 +247,6 @@
 HOME="${PWD}"
 export HOME
 
-SYSARCHITECTURE=$(getconf LONG_BIT)
-TORARCHITECTURE=$(expr "$(file TorBrowser/Tor/tor)" : '.*ELF \([[:digit:]]*\)')
-
-if [ $SYSARCHITECTURE -ne $TORARCHITECTURE ]; then
-   complain "Wrong architecture? 32-bit vs. 64-bit."
-   exit 1
-fi
-
-[% IF c("var/asan") -%]
-# We need to disable LSan which is enabled by default now. Otherwise we'll get
-# a crash during shutdown: https://bugs.torproject.org/10599#comment:59
-ASAN_OPTIONS="detect_leaks=0"
-export ASAN_OPTIONS
-[% END -%]
-
 function setControlPortPasswd() {
     local ctrlPasswd=$1
 
@@ -342,13 +309,15 @@
 # your password in the following line where the word “secret” is:
 setControlPortPasswd ${TOR_CONTROL_PASSWD:='"secret"'}
 
-# Set up custom bundled fonts. See fonts-conf(5).
-export FONTCONFIG_PATH="${HOME}/TorBrowser/Data/fontconfig"
-export FONTCONFIG_FILE="fonts.conf"
-
 # Avoid overwriting user's dconf values. Fixes #27903.
 export GSETTINGS_BACKEND=memory
 
+# Set up custom bundled fonts. See fonts-conf(5).
+export FONTCONFIG_FILE="${HOME}/Data/fontconfig/fonts.conf"
+
+sed -i "${FONTCONFIG_FILE}"\
+    -e "s,<dir>fonts</dir>,<dir>${TBB_STORE_PATH}/fonts</dir>,"
+
 cd "${HOME}"
 
 # We pass all additional command-line arguments we get to Firefox.
@@ -357,23 +326,23 @@
 
 if [ "$show_usage" -eq 1 ]; then
     # Display Firefox help, then our help
-    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ./firefox --class "Tor Browser" \
-        -profile TorBrowser/Data/Browser/profile.default --help 2>/dev/null
+    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ${TBB_STORE_PATH}/firefox --class "Tor Browser" \
+        -profile Data/Browser/profile.default --help 2>/dev/null
     tbb_usage
 elif [ "$detach" -eq 1 ] ; then
-    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ./firefox --class "Tor Browser" \
-       -profile TorBrowser/Data/Browser/profile.default "${@}" > "$logfile" 2>&1 </dev/null &
+    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ${TBB_STORE_PATH}/firefox --class "Tor Browser" \
+       -profile Data/Browser/profile.default "${@}" > "$logfile" 2>&1 </dev/null &
     disown "$!"
 elif [ "$log_output" -eq 1 -a "$show_output" -eq 1 ]; then
-    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ./firefox --class "Tor Browser" \
-        -profile TorBrowser/Data/Browser/profile.default "${@}" 2>&1 </dev/null | \
+    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ${TBB_STORE_PATH}/firefox --class "Tor Browser" \
+        -profile Data/Browser/profile.default "${@}" 2>&1 </dev/null | \
         tee "$logfile"
 elif [ "$show_output" -eq 1 ]; then
-    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ./firefox --class "Tor Browser" \
-        -profile TorBrowser/Data/Browser/profile.default "${@}" < /dev/null
+    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ${TBB_STORE_PATH}/firefox --class "Tor Browser" \
+        -profile Data/Browser/profile.default "${@}" < /dev/null
 else
-    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ./firefox --class "Tor Browser" \
-        -profile TorBrowser/Data/Browser/profile.default "${@}" > "$logfile" 2>&1 </dev/null
+    TOR_CONTROL_PASSWD=${TOR_CONTROL_PASSWD} ${TBB_STORE_PATH}/firefox --class "Tor Browser" \
+        -profile Data/Browser/profile.default "${@}" > "$logfile" 2>&1 </dev/null
 fi
 
 exit $?