hotfix: TCL8_5_TM_PATH being unset causes crash

flow.tcl

@@ -21,7 +21,11 @@ if { [file exists $::env(OPENLANE_ROOT)/install/env.tcl ] } {
 if { ! [info exists ::env(OPENROAD_BIN) ] } {
     set ::env(OPENROAD_BIN) openroad
 }
-set ::env(TCL8_5_TM_PATH) "$::env(OPENLANE_ROOT)/scripts:$::env(TCL8_5_TM_PATH)"
+if { [info exists ::env(TCL8_5_TM_PATH)] } {
+    set ::env(TCL8_5_TM_PATH) "$::env(OPENLANE_ROOT)/scripts:$::env(TCL8_5_TM_PATH)"
+} else {
+    set ::env(TCL8_5_TM_PATH) "$::env(OPENLANE_ROOT)/scripts"
+}
 package require openlane; # provides the utils as well
 
 proc run_placement_step {args} {

scripts/openlane-1.0.1.tm

@@ -0,0 +1,17 @@
+# Copyright 2024 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+set scripts_dir [ file dirname [ file normalize [ info script ] ] ]
+foreach file [glob $scripts_dir/tcl_commands/*.tcl] {
+    source $file
+}

scripts/openlane_utils-1.0.1.tm

@@ -0,0 +1,17 @@
+# Copyright 2024 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+set scripts_dir [ file dirname [ file normalize [ info script ] ] ]
+foreach file [glob $scripts_dir/utils/*.tcl] {
+    source $file
+}