diff --git a/build/windows/installer/lang/list-installer-langs.py b/build/windows/installer/lang/list-installer-langs.py
new file mode 100644
index 0000000000..07e34b6b8d
--- /dev/null
+++ b/build/windows/installer/lang/list-installer-langs.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+import os
+import glob
+import re
+import sys
+import xml.etree.ElementTree as ET
+from pathlib import Path
+
+MESON_BUILD_ROOT = Path(os.environ.get("MESON_BUILD_ROOT",".")).as_posix() 
+MESON_SOURCE_ROOT = Path(os.environ.get("MESON_SOURCE_ROOT",sys.argv[2])).as_posix() 
+
+## Get list of Inno and GIMP supported languages
+po_inno_files = sorted(glob.glob(os.path.join(MESON_SOURCE_ROOT,'po-windows-installer/*.po')))
+po_inno_array = [re.sub(r'^po-windows-installer/|\.po$', '', f) for f in po_inno_files]
+po_files = sorted(glob.glob(os.path.join(MESON_SOURCE_ROOT,'po/*.po')))
+po_array = [re.sub(r'^po/|\.po$', '', f) for f in po_files]
+
+## Get strings for GIMP and Inno supported languages
+xml_file = os.path.join(MESON_SOURCE_ROOT, 'build/windows/installer/lang/iso_639_custom.xml')
+tree = ET.parse(xml_file)
+root = tree.getroot()
+
+
+## Create list of lang [Languages]
+if sys.argv[1] == 'msg':
+  msg_list = []
+  for po in po_inno_array:
+    # Change po
+    po = po.replace('\\', '').replace('//', '').replace('..', '').replace('po-windows-installer', '')
+    # Change isl
+    inno_code = None
+    for entry in root.findall('.//iso_639_entry'):
+      if entry.get('dl_code') == po:
+        inno_code = entry.get('inno_code').replace('\\\\', '\\')
+        break
+    # Create line
+    if inno_code is not None:
+      msg_line = f'Name: "{po}"; MessagesFile: "compiler:{inno_code},{{#ASSETS_DIR}}\\lang\\{po}.setup.isl"'
+      msg_list.append(msg_line)
+  output_file = os.path.join(MESON_BUILD_ROOT, 'build/windows/installer/base_po-msg.list')
+  with open(output_file, 'w', encoding='utf-8') as f:
+    f.write('\n'.join(msg_list))
+
+## Create list of lang [Components]
+elif sys.argv[1] == 'cmp':
+  cmp_list = []
+  for po in po_array:
+    # Change po
+    po = po.replace('\\', '').replace('//', '').replace('..', '').replace('po', '')
+    po_clean = po.replace('@', '_')
+    # Change desc
+    desc = None
+    for entry in root.findall('.//iso_639_entry'):
+      if entry.get('dl_code') == po:
+        desc = entry.get('name')
+        break
+    # Create line
+    if desc is not None:
+      cmp_line = f'Name: loc\\{po_clean}; Description: "{desc}"; Types: full custom'
+      cmp_list.append(cmp_line)
+  output_file = os.path.join(MESON_BUILD_ROOT, 'build/windows/installer/base_po-cmp.list')
+  with open(output_file, 'w', encoding='utf-8') as f:
+    f.write('\n'.join(cmp_list))
+
+## Create list of lang [Files]
+elif sys.argv[1] == 'files':
+  files_list = []
+  for po in po_array:
+    # Change po
+    po = po.replace('\\', '').replace('//', '').replace('..', '').replace('po', '')
+    po_clean = po.replace('@', '_')
+    # Create line
+    files_line = f'Source: "{{#GIMP_DIR32}}\\share\\locale\\{po}\\*"; DestDir: "{{app}}\\share\\locale\\{po}"; Components: loc\\{po_clean}; Flags: recursesubdirs restartreplace uninsrestartdelete ignoreversion'
+    files_list.append(files_line)
+  output_file = os.path.join(MESON_BUILD_ROOT, 'build/windows/installer/base_po-files.list')
+  with open(output_file, 'w') as f:
+    f.write('\n'.join(files_list))
diff --git a/build/windows/installer/lang/list-installer-langs.sh b/build/windows/installer/lang/list-installer-langs.sh
deleted file mode 100644
index b31599bc14..0000000000
--- a/build/windows/installer/lang/list-installer-langs.sh
+++ /dev/null
@@ -1,85 +0,0 @@
-#!/bin/bash
-
-BUILD_ROOT="`pwd`"
-SOURCE_ROOT="$2"
-
-if [ "$1" = 'cmp' ]; then
-  cd "$SOURCE_ROOT"
-  ## Get list of GIMP supported languages
-  PO_ARRAY=($(echo $(ls po/*.po |
-              sed -e 's|po/||g' -e 's|.po||g' | sort) |
-              tr '\n\r' ' '))
-
-  ## Create list of lang [Components]
-  for PO in "${PO_ARRAY[@]}"; do
-    CMP_LINE='Name: loc\PO_CLEAN; Description: "DESC"; Types: full custom'
-    # Change po
-    PO_CLEAN=$(echo $PO | sed "s/@/_/g")
-    CMP_LINE=$(sed "s/PO_CLEAN/$PO_CLEAN/g" <<< $CMP_LINE)
-    # Change desc
-    DESC=$(echo "cat //iso_639_entries/iso_639_entry[@dl_code=\"$PO\"]/@name" |
-           xmllint --shell build/windows/installer/lang/iso_639_custom.xml |
-           awk -F'[="]' '!/>/{print $(NF-1)}')
-    CMP_LINE=$(sed "s/DESC/$DESC/g" <<< $CMP_LINE)
-    # Create line
-    NL=$'\n'
-    CMP_LIST+="${CMP_LINE}${NL}"
-  done
-  cd "$BUILD_ROOT"
-  echo "$CMP_LIST" > build/windows/installer/base_po-cmp.list
-fi
-
-
-if [ "$1" = 'files' ]; then
-  cd "$SOURCE_ROOT"
-  ## Get list of GIMP supported languages
-  PO_ARRAY=($(echo $(ls po/*.po |
-              sed -e 's|po/||g' -e 's|.po||g' | sort) |
-              tr '\n\r' ' '))
-
-  ## Create list of lang [Files]
-  for PO in "${PO_ARRAY[@]}"; do
-    FILES_LINE='Source: "{#GIMP_DIR32}\share\locale\PO\*"; DestDir: "{app}\share\locale\PO"; Components: loc\PO_CLEAN; Flags: recursesubdirs restartreplace uninsrestartdelete ignoreversion'
-    # Change po
-    PO_CLEAN=$(echo $PO | sed "s/@/_/g")
-    FILES_LINE=$(sed "s/PO_CLEAN/$PO_CLEAN/g" <<< $FILES_LINE)
-    FILES_LINE=$(sed "s/PO/$PO/g" <<< $FILES_LINE)
-    # Create line
-    NL=$'\n'
-    FILES_LIST+="${FILES_LINE}${NL}"
-  done
-  cd "$BUILD_ROOT"
-  echo "$FILES_LIST" > build/windows/installer/base_po-files.list
-fi
-
-
-if [ "$1" = 'msg' ]; then
-  ## Get list of Inno supported languages
-  cd "$SOURCE_ROOT"
-  PO_INNO_ARRAY=($(echo $(ls po-windows-installer/*.po |
-                  sed -e 's|po-windows-installer/||g' -e 's|.po||g' | sort) |
-                  tr '\n\r' ' '))
-  cd "$BUILD_ROOT"
-
-  ## Create list of lang [Languages]
-  if [ "$1" = 'msg' ]; then
-    cd "$SOURCE_ROOT"
-    for PO in "${PO_INNO_ARRAY[@]}"; do
-      MSG_LINE='Name: "PO"; MessagesFile: "compiler:INNO_CODE,{#ASSETS_DIR}\lang\PO.setup.isl"'
-      # Change po
-      MSG_LINE=$(sed "s/PO/$PO/g" <<< $MSG_LINE)
-      # Change isl
-      INNO_CODE=$(echo "cat //iso_639_entries/iso_639_entry[@dl_code=\"$PO\"]/@inno_code" |
-                  xmllint --shell build/windows/installer/lang/iso_639_custom.xml |
-                  awk -F'[="]' '!/>/{print $(NF-1)}')
-      MSG_LINE=$(sed "s/INNO_CODE/$INNO_CODE/g" <<< $MSG_LINE)
-      # Create line
-      if [ "$INNO_CODE" != '' ]; then
-        NL=$'\n'
-        MSG_LIST+="${MSG_LINE}${NL}"
-      fi
-    done
-    cd "$BUILD_ROOT"
-    echo "$MSG_LIST" > build/windows/installer/base_po-msg.list
-  fi
-fi
diff --git a/build/windows/installer/lang/meson.build b/build/windows/installer/lang/meson.build
index 548747b6e1..8250c0d010 100644
--- a/build/windows/installer/lang/meson.build
+++ b/build/windows/installer/lang/meson.build
@@ -105,7 +105,16 @@ foreach language : languages
 endforeach
 
 # Generate lang lists for Inno
-gen_list = find_program('list-installer-langs.sh')
+gen_list = find_program('list-installer-langs.py')
+
+custom_target('base_po-msg',
+  input : [ 'iso_639_custom.xml' ],
+  output: [ 'base_po-msg.list', ],
+  command: [
+    gen_list, 'msg', '@SOURCE_ROOT@'
+  ],
+  build_by_default: true,
+)
 
 custom_target('base_po-cmp',
   input : [ 'iso_639_custom.xml' ],
@@ -125,15 +134,6 @@ custom_target('base_po-files',
   build_by_default: true,
 )
 
-custom_target('base_po-msg',
-  input : [ 'iso_639_custom.xml' ],
-  output: [ 'base_po-msg.list', ],
-  command: [
-    gen_list, 'msg', '@SOURCE_ROOT@'
-  ],
-  build_by_default: true,
-)
-
 test('windows-installer-langs',
   find_program('test-installer-langs.sh'),
   env: [