diff --git a/setup/gen-files.py b/setup/gen-files.py
new file mode 100644
index 0000000..8442d5c
--- /dev/null
+++ b/setup/gen-files.py
@@ -0,0 +1,26 @@
+# Generate per-file [Files] entries for node_modules into setup-offline.iss
+import io, os
+
+base = r'C:\Users\VanuSystems-Mu\AppData\Roaming\reasonix\global-workspace\dsh-app-staging\setup-offline'
+nm_src = os.path.join(base, 'runtime', 'dsh', 'node_modules')
+iss = os.path.join(base, 'setup-offline.iss')
+
+lines = []
+count = 0
+for r, _, fs in os.walk(nm_src):
+    for f in fs:
+        full = os.path.join(r, f)
+        rel = os.path.relpath(full, nm_src).replace('\\', '/')
+        destdir = '{app}/runtime/dsh/node_modules/' + os.path.dirname(rel).replace('\\', '/')
+        if destdir.endswith('/'):
+            destdir = destdir[:-1]
+        lines.append('Source: "runtime/dsh/node_modules/' + rel + '"; DestDir: "' + destdir + '"; Flags: ignoreversion nocompression')
+        count += 1
+print('generated', count, 'entries')
+
+s = io.open(iss, encoding='utf-8').read()
+old = 'Source: "runtime/dsh/node_modules/*.*"; DestDir: "{app}/runtime/dsh/node_modules"; Flags: ignoreversion recursesubdirs createallsubdirs nocompression'
+assert old in s, 'old line not found'
+s = s.replace(old, '\n'.join(lines))
+io.open(iss, 'w', encoding='utf-8').write(s)
+print('iss updated, lines:', len(s.splitlines()))