diff --git a/env/CONFIG b/env/CONFIG
index 343e21a60..380197583 100644
--- a/env/CONFIG
+++ b/env/CONFIG
@@ -1,5 +1,5 @@
 # "set"-syntax needed only for tcsh (but works with bash and zsh)
-set DAMASK_NUM_THREADS    = 4
+set DAMASK_NUM_THREADS  = 4
 
-set MSC_ROOT              = /opt/msc
-set MARC_VERSION          = 2019.1
+set MSC_ROOT            = /opt/msc
+set MARC_VERSION        = 2019.1
diff --git a/installation/mods_MarcMentat/apply_DAMASK_modifications.py b/installation/mods_MarcMentat/apply_DAMASK_modifications.py
new file mode 100755
index 000000000..deea560ac
--- /dev/null
+++ b/installation/mods_MarcMentat/apply_DAMASK_modifications.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+
+import os
+import glob
+import argparse
+from pathlib import Path
+
+import damask
+
+marc_version = float(damask.environment.options['MARC_VERSION'])
+msc_root     = Path(damask.environment.options['MSC_ROOT'])
+damask_root  = damask.environment.root_dir
+
+parser = argparse.ArgumentParser(
+     description='Apply DAMASK modification to MSC.Marc/Mentat',
+     epilog = f'MSC_ROOT={msc_root} and MARC_VERSION={marc_version} (from {damask_root}/env/CONFIG)')
+parser.add_argument('--editor', dest='editor', metavar='string', default='vi',
+                    help='Name of the editor for MSC.Mentat (executable)')
+
+
+def copy_and_replace(in_file,dst):
+    with open(in_file) as f:
+        content = f.read()
+    content = content.replace('%INSTALLDIR%',str(damask_root/'bin'))
+    content = content.replace('%VERSION%',str(marc_version).replace('.0',''))
+    content = content.replace('%EDITOR%', parser.parse_args().editor)
+    with open(dst/Path(in_file).name,'w') as f:
+        f.write(content)
+
+
+print('adapting Marc tools...\n')
+
+src = damask_root/f'installation/mods_MarcMentat/{marc_version}/Marc_tools'
+dst = msc_root/f'marc{marc_version}/tools'
+for in_file in glob.glob(str(src/'*damask*')) + [str(src/'include_linux64')]:
+    copy_and_replace(in_file,dst)
+
+
+print('adapting Mentat scripts and menus...\n')
+
+src = damask_root/f'installation/mods_MarcMentat/{marc_version}/Mentat_bin'
+dst = msc_root/f'mentat{marc_version}/bin'
+for in_file in glob.glob(str(src/'*[!.original]')):
+    copy_and_replace(in_file,dst)
+
+src = damask_root/f'installation/mods_MarcMentat/{marc_version}/Mentat_menus'
+dst = msc_root/f'mentat{marc_version}/menus'
+for in_file in glob.glob(str(src/'job_run.ms')):
+    copy_and_replace(in_file,dst)
+
+
+print('compiling Mentat menu binaries...')
+
+executable = str(msc_root/f'mentat{marc_version}/bin/mentat')
+menu_file  = str(msc_root/f'mentat{marc_version}/menus/linux64/main.msb')
+os.system(f'xvfb-run {executable} -compile {menu_file}')
+
+
+print('setting file access rights...\n')
+
+for pattern in [msc_root/f'marc{marc_version}/tools/*damask*',
+                msc_root/f'mentat{marc_version}/bin/submit?',
+                msc_root/f'mentat{marc_version}/bin/kill?']:
+    for f in glob.glob(str(pattern)):
+        os.chmod(f,0o755)
diff --git a/installation/mods_MarcMentat/apply_DAMASK_modifications.sh b/installation/mods_MarcMentat/apply_DAMASK_modifications.sh
deleted file mode 100755
index ac0daf036..000000000
--- a/installation/mods_MarcMentat/apply_DAMASK_modifications.sh
+++ /dev/null
@@ -1,144 +0,0 @@
-#!/usr/bin/env bash
-
-SCRIPTLOCATION="$( cd "$( dirname "$0" )" && pwd )"
-DAMASK_ROOT=$SCRIPTLOCATION/../../
-
-if [ "x$MSC_ROOT" != "x" ]; then
- DEFAULT_DIR=$MSC_ROOT
-fi
-if [ "x$MARC_VERSION" != "x" ]; then
- DEFAULT_VERSION=$MARC_VERSION
-fi
-if [ "x$DAMASK_BIN" != "x" ]; then
- BIN_DIR=$DAMASK_ROOT/bin
-fi
-
-while [ ! -d "$SCRIPTLOCATION/$VERSION" ] || [ -z "$VERSION" ]
-do
-  echo "Input version of MARC/MENTAT installation: [${DEFAULT_VERSION}]"
-  read VERSION
-  if [ -z "$VERSION" ]; then
-    VERSION=${DEFAULT_VERSION}
-  fi
-  [[ -d "$SCRIPTLOCATION/$VERSION" ]] || echo -e "$VERSION not supported..!\n"
-done
-echo "MSC version: $VERSION"
-
-while [ ! -d "$INSTALLDIR" ] || [ -z "$INSTALLDIR" ]
-do
-  echo "Input path of MARC/MENTAT installation: [${DEFAULT_DIR}]"
-  read INSTALLDIR
-  if [ -z "$INSTALLDIR" ]; then
-    INSTALLDIR=${DEFAULT_DIR}
-  fi
-  [[ -d "$INSTALLDIR" ]] || echo -e "$INSTALLDIR not found..!\n"
-done
-
-INSTALLDIR=${INSTALLDIR%/}               # remove trailing slash
-echo "MSC installation path: $INSTALLDIR"
-
-DEFAULT_EDITOR='vi'
-EDITOR=''
-while [ -z "$EDITOR" ]
-do
-  echo "Input command to invoke your preferred editor: [${DEFAULT_EDITOR}]"
-  read EDITOR
-  if [ -z "$EDITOR" ]; then
-    EDITOR=${DEFAULT_EDITOR}
-  fi
-done
-echo "Editor: $EDITOR"
-
-# tools
-echo ''
-echo 'adapting Marc tools...'
-theDIR=$INSTALLDIR/marc$VERSION/tools
-for filename in 'comp_damask_mp' \
-                'comp_damask_lmp' \
-                'comp_damask_hmp' \
-                'run_damask_mp' \
-                'run_damask_lmp' \
-                'run_damask_hmp' \
-                'include_linux64'; do
-  cp $SCRIPTLOCATION/$VERSION/Marc_tools/$filename $theDIR
-  echo $theDIR/$filename | xargs perl -pi -e "s:%INSTALLDIR%:${INSTALLDIR}:g"
-  echo $theDIR/$filename | xargs perl -pi -e "s:%VERSION%:${VERSION}:g"
-  echo $filename
-done
-
-# Mentat scripts
-echo ''
-echo 'adapting Mentat scripts...'
-theDIR=$INSTALLDIR/mentat$VERSION/bin
-for filename in 'edit_window' \
-                'submit4' \
-                'submit5' \
-                'submit6' \
-                'kill4' \
-                'kill5' \
-                'kill6'; do
-  cp $SCRIPTLOCATION/$VERSION/Mentat_bin/$filename $theDIR
-  echo $theDIR/$filename | xargs perl -pi -e "s:%INSTALLDIR%:${INSTALLDIR}:g"
-  echo $theDIR/$filename | xargs perl -pi -e "s:%VERSION%:${VERSION}:g"
-  echo $theDIR/$filename | xargs perl -pi -e "s:%EDITOR%:${EDITOR}:g"
-  echo $filename
-done
-
-# Mentat scripts
-echo -e '\nadapting Mentat menus...'
-theDIR=$INSTALLDIR/mentat$VERSION/menus
-for filename in 'job_run.ms'; do
-  cp $SCRIPTLOCATION/$VERSION/Mentat_menus/$filename $theDIR
-  echo $theDIR/$filename | xargs perl -pi -e "s:%INSTALLDIR%:${INSTALLDIR}:g"
-  echo $theDIR/$filename | xargs perl -pi -e "s:%VERSION%:${VERSION}:g"
-  echo $filename
-done
-
-# compile menus
-echo ''
-echo 'compiling Mentat menu binaries...'
-$(which xvfb-run 2>/dev/null) $INSTALLDIR/mentat$VERSION/bin/mentat -compile $INSTALLDIR/mentat$VERSION/menus/linux64/main.msb
-[[ $? != 0 ]] && echo '...failed. Try installing xvfb-run on your system.'
-
-# setting access rights
-echo ''
-echo 'setting file access rights...'
-for filename in marc$VERSION/tools/run_damask* \
-                marc$VERSION/tools/comp_damask* \
-                mentat$VERSION/bin/submit{4..6} \
-                mentat$VERSION/bin/kill{4..6} ; do
-  chmod 755 $INSTALLDIR/${filename}
-done
-
-#creating symlinks for run_damask_scripts
-
-if [ -d "$BIN_DIR" ]; then
-  echo ''
-  echo "Do you want to create symlinks for run_damask scripts in ${BIN_DIR} [YES/no] ?"
-  read YESNO
-    if [ -z "$YESNO" ]; then
-      YESNO=yes
-    fi
-  case $YESNO in
-   y* | Y* )
-    echo''
-    echo 'creating symlinks ...'
-    echo''
-    theDIR=$INSTALLDIR/marc$VERSION/tools
-    for filename in 'run_damask_mp' \
-                    'run_damask_lmp' \
-                    'run_damask_hmp'; do
-      echo ${filename:4}$VERSION
-      [ -f $BIN_DIR/${filename:4}$VERSION ] && rm $BIN_DIR/${filename:4}$VERSION
-      ln -s $theDIR/$filename $BIN_DIR/${filename:4}$VERSION 
-    done
-    ;;
-  esac
-fi
-
-# precompiling user subroutine
-echo ''
-echo 'precompiling $VERSION HYPELA2 user subroutine...'
-echo 'not yet implemented..!'
-
-echo -e '\ndone.'
diff --git a/installation/mods_MarcMentat/installation.txt b/installation/mods_MarcMentat/installation.txt
index fc81408cc..cff143d9f 100644
--- a/installation/mods_MarcMentat/installation.txt
+++ b/installation/mods_MarcMentat/installation.txt
@@ -11,7 +11,7 @@ The Intel Fortran compiler needs to be installed.
 
 1) Install Marc, Mentat and Documentation as usual
    Run the test example including subroutines to confirm that the installation of both Marc/Mentat and the Intel Fortran Compiler is ok!
-2) Run the apply_DAMASK_modifications.sh script from this directory.
+2) Run the apply_DAMASK_modifications.py script from this directory.
 
 
 APPENDIX:
diff --git a/python/damask/_environment.py b/python/damask/_environment.py
index 7b8b8487e..d4b7abe51 100644
--- a/python/damask/_environment.py
+++ b/python/damask/_environment.py
@@ -3,7 +3,6 @@ from pathlib import Path
 
 class Environment:
 
-    # ToDo: Probably, we don't need a class (just a module with a few functions)
     def __init__(self):
         """Do Nothing."""
         pass
diff --git a/python/damask/solver/_marc.py b/python/damask/solver/_marc.py
index 8cf888295..8e96f1b90 100644
--- a/python/damask/solver/_marc.py
+++ b/python/damask/solver/_marc.py
@@ -49,7 +49,7 @@ class Marc:
                   ):
 
 
-        usersub = damask.environment.root_dir/Path(f'src/DAMASK_marc{self.version}')
+        usersub = damask.environment.root_dir/'src/DAMASK_marc'
         usersub = usersub.parent/(usersub.name + ('.f90' if compile else '.marc'))
         if not usersub.is_file():
             raise FileNotFoundError("DAMASK4Marc ({}) '{}' not found".format(('source' if compile else 'binary'),usersub))
diff --git a/src/DAMASK_marc2018.1.f90 b/src/DAMASK_marc2018.1.f90
deleted file mode 120000
index 2c5bec706..000000000
--- a/src/DAMASK_marc2018.1.f90
+++ /dev/null
@@ -1 +0,0 @@
-DAMASK_marc.f90
\ No newline at end of file
diff --git a/src/DAMASK_marc2018.f90 b/src/DAMASK_marc2018.f90
deleted file mode 120000
index 2c5bec706..000000000
--- a/src/DAMASK_marc2018.f90
+++ /dev/null
@@ -1 +0,0 @@
-DAMASK_marc.f90
\ No newline at end of file
diff --git a/src/DAMASK_marc2019.1.f90 b/src/DAMASK_marc2019.1.f90
deleted file mode 120000
index 2c5bec706..000000000
--- a/src/DAMASK_marc2019.1.f90
+++ /dev/null
@@ -1 +0,0 @@
-DAMASK_marc.f90
\ No newline at end of file
diff --git a/src/DAMASK_marc2019.f90 b/src/DAMASK_marc2019.f90
deleted file mode 120000
index 2c5bec706..000000000
--- a/src/DAMASK_marc2019.f90
+++ /dev/null
@@ -1 +0,0 @@
-DAMASK_marc.f90
\ No newline at end of file