simplify create_log_file_names using fsrings

mpsd-software-environment.py

@@ -12,7 +12,6 @@ import time
 from pathlib import Path
 from typing import List, Tuple, Union
 import re
-from string import Template
 
 # If 'rich' is available ("pip install rich" or "apt-get install python3-rich"),
 # then use coloured output, otherwise proceed as before
@@ -38,14 +37,7 @@ call_date_iso = (
 config_vars = {
     #  kept inside the mpsd_release folder
     "cmd_log_file": "script_execution_summary.log",
-    #  Placeholder installer log file name, placed at mpsd_microarch/logs
-    "installer_log_template": Template(
-        "${mpsd_release}_${mpsd_microarch}_${date}_APEX_${action}.log"
-    ),
-    #  Placeholder build log file name, placed at mpsd_microarch/logs
-    "build_log_template": Template(
-        "${mpsd_release}_${mpsd_microarch}_${date}_BUILD_${toolchain}_${action}.log"
-    ),
+    #  Metadata tags
     "metadata_tag_open": "!<meta>",
     "metadata_tag_close": "</meta>!",
     "spack_environments_repo": "https://gitlab.gwdg.de/mpsd-cs/spack-environments.git",
@@ -96,20 +88,16 @@ def create_log_file_names(
     if toolchain:
         # if toolchain is given, then  we build the build_log_file_name
         if action in ["install", "remove"]:
-            log_template = config_vars["build_log_template"]
+            log_file_name = (
+                f"{mpsd_release}_{mpsd_microarch}_{date}_BUILD_{toolchain}_{action}.log"
+            )
         else:
             return None
     else:
         # if toolchain is not given, then we build the installer_log_file_name
-        log_template = config_vars["installer_log_template"]
-
-    return log_template.substitute(
-        mpsd_release=mpsd_release,
-        mpsd_microarch=mpsd_microarch,
-        date=date,
-        action=action,
-        toolchain=toolchain,
-    )
+        log_file_name = f"{mpsd_release}_{mpsd_microarch}_{date}_APEX_{action}.log"
+
+    return log_file_name
 
 
 def log_metadata(key: str, value: str) -> None: