Run install.bash isolated

installer/tue-install-impl.bash

@@ -33,13 +33,17 @@ function date_stamp
     date +%Y_%m_%d_%H_%M_%S
 }
 
+export -f date_stamp
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function version_gt()
 {
     test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1";
 }
 
+export -f version_gt
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-error
@@ -54,6 +58,8 @@ Logfile: $INSTALL_DETAILS_FILE
     exit 1
 }
 
+export -f tue-install-error
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-warning
@@ -62,6 +68,8 @@ function tue-install-warning
     TUE_INSTALL_WARNINGS="    [$TUE_INSTALL_CURRENT_TARGET] $*\n${TUE_INSTALL_WARNINGS}"
 }
 
+export -f tue-install-warning
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-info
@@ -70,6 +78,8 @@ function tue-install-info
     TUE_INSTALL_INFOS="    [$TUE_INSTALL_CURRENT_TARGET] $*\n${TUE_INSTALL_INFOS}"
 }
 
+export -f tue-install-info
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-debug
@@ -82,20 +92,26 @@ function tue-install-debug
     fi
 }
 
+export -f tue-install-debug
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-echo
 {
     echo -e "\e[0;1m[$TUE_INSTALL_CURRENT_TARGET]: $*\e[0m" | tee --append "$INSTALL_DETAILS_FILE"
 }
 
+export -f tue-install-echo
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-tee
 {
     echo -e "$*" | tee --append "$INSTALL_DETAILS_FILE"
 }
 
+export -f tue-install-tee
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-pipe
@@ -111,6 +127,8 @@ function tue-install-pipe
     return $return_code
 }
 
+export -f tue-install-pipe
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function _remove_old_target_dep_recursively
@@ -191,6 +209,8 @@ function _remove_old_target_dep_recursively
     return ${error_code}
 }
 
+export -f _remove_old_target_dep_recursively
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-target-now
@@ -205,6 +225,8 @@ function tue-install-target-now
     return $?
 }
 
+export -f tue-install-target-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-target
@@ -334,7 +356,7 @@ function tue-install-target
             else
                 tue-install-debug "Sourcing $install_file.bash"
                 # shellcheck disable=SC1090
-                source "$install_file".bash
+                (source "${install_file}".bash)
                 tue-install-debug "Done: Sourcing $install_file.bash"
             fi
             target_processed=true
@@ -381,6 +403,8 @@ function tue-install-target
     tue-install-debug "Finished installing $target"
 }
 
+export -f tue-install-target
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function _show_update_message
@@ -398,6 +422,8 @@ function _show_update_message
     fi
 }
 
+export -f _show_update_message
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function _try_branch_git
@@ -440,6 +466,8 @@ function _try_branch_git
     return ${_checkout_error_code}
 }
 
+export -f _try_branch_git
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-git
@@ -573,6 +601,8 @@ function tue-install-git
     _show_update_message "$TUE_INSTALL_CURRENT_TARGET" "$res"
 }
 
+export -f tue-install-git
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-apply-patch
@@ -599,6 +629,8 @@ function tue-install-apply-patch
     patch -s -N -r - -p0 -d "$TUE_INSTALL_PKG_DIR" < "$patch_file"
 }
 
+export -f tue-install-apply-patch
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-cp
@@ -660,6 +692,8 @@ Command: tue-install-cp $*"
     done
 }
 
+export -f tue-install-cp
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-ln
@@ -745,6 +779,8 @@ Command: tue-install-ln $*"
     fi
 }
 
+export -f tue-install-ln
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 # Reads SOURCE_FILE and looks in TARGET_FILE for the first and last line of SOURCE_FILE. If these
@@ -844,6 +880,8 @@ function tue-install-add-text
     fi
 }
 
+export -f tue-install-add-text
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-get-releases
@@ -871,6 +909,8 @@ function tue-install-get-releases
         tue-install-error "Failed to get '$filename' from '$repo_short_url'"
 }
 
+export -f tue-install-get-releases
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-system
@@ -885,6 +925,8 @@ function tue-install-system
     TUE_INSTALL_SYSTEMS="$1 $TUE_INSTALL_SYSTEMS"
 }
 
+export -f tue-install-system
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-system-now
@@ -946,6 +988,8 @@ function tue-install-system-now
     fi
 }
 
+export -f tue-install-system-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-apt-get-update
@@ -955,6 +999,8 @@ function tue-install-apt-get-update
     rm -f $TUE_APT_GET_UPDATED_FILE
 }
 
+export -f tue-install-apt-get-update
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-ppa
@@ -976,6 +1022,8 @@ function tue-install-ppa
     TUE_INSTALL_PPA="${TUE_INSTALL_PPA} ${ppa// /^}"  # Replace space by ^ to support for-loops later
 }
 
+export -f tue-install-ppa
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-ppa-now
@@ -1056,6 +1104,8 @@ function tue-install-ppa-now
     fi
 }
 
+export -f tue-install-ppa-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function _tue-install-pip
@@ -1079,17 +1129,23 @@ function _tue-install-pip
     declare -g "$list"="$name ${!list}"
 }
 
+export -f _tue-install-pip
+
 # Needed for backward compatibility
 function tue-install-pip
 {
     _tue-install-pip "3" "$@"
 }
 
+export -f tue-install-pip
+
 function tue-install-pip3
 {
     _tue-install-pip "3" "$@"
 }
 
+export -f tue-install-pip3
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function _tue-install-pip-now
@@ -1202,6 +1258,8 @@ function _tue-install-pip-now
     fi
 }
 
+export -f _tue-install-pip-now
+
 function _tue-install-pip-check
 {
     tue-install-debug "_tue-install-pip-check $*"
@@ -1243,17 +1301,23 @@ function _tue-install-pip-check
     done
 }
 
+export -f _tue-install-pip-check
+
 # Needed for backward compatibility
 function tue-install-pip-now
 {
     _tue-install-pip-now "3" "$@"
 }
 
+export -f tue-install-pip-now
+
 function tue-install-pip3-now
 {
     _tue-install-pip-now "3" "$@"
 }
 
+export -f tue-install-pip3-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-snap
@@ -1268,6 +1332,8 @@ function tue-install-snap
     TUE_INSTALL_SNAPS="$1 $TUE_INSTALL_SNAPS"
 }
 
+export -f tue-install-snap
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-snap-now
@@ -1304,6 +1370,8 @@ function tue-install-snap-now
     fi
 }
 
+export -f tue-install-snap-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-gem
@@ -1318,6 +1386,8 @@ function tue-install-gem
     TUE_INSTALL_GEMS="$1 $TUE_INSTALL_GEMS"
 }
 
+export -f tue-install-gem
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-gem-now
@@ -1352,6 +1422,8 @@ function tue-install-gem-now
     fi
 }
 
+export -f tue-install-gem-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-dpkg-now
@@ -1361,6 +1433,8 @@ function tue-install-dpkg-now
     tue-install-dpkg "$@"
 }
 
+export -f tue-install-dpkg-now
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-dpkg
@@ -1375,6 +1449,8 @@ function tue-install-dpkg
     tue-install-pipe sudo apt-get --fix-broken --assume-yes -q install || tue-install-error "An error occured while fixing dpkg install"
 }
 
+export -f tue-install-dpkg
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function tue-install-ros
@@ -1519,6 +1595,8 @@ function tue-install-ros
     TUE_INSTALL_PKG_DIR=$ros_pkg_dir
 }
 
+export -f tue-install-ros
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 function _missing_targets_check