add PyPi link

README.md

@@ -4,6 +4,12 @@ Shamir Secret Sharing on paper using gfshare.
 
 ## Installation
 
+### PyPi
+
+* https://pypi.org/project/paper-secret/
+
+### Dependencies
+
 `gfshare` is required to split and merge the secret.
 See `man gfshare` for an explanation of Shamir Secret Sharing in gf(2**8).
 

create_script.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+from pathlib import Path
+
+
+def main():
+    """
+    Creates two single-file python executables `enpaper` and `depaper`.
+
+    One can use this method as an alternative to an installation from PyPi.
+    """
+    package = Path() / 'src' / 'paper_secret'
+    util = package / 'util.py'
+
+    enpaper_files = [util, package / 'enpaper.py']
+    depaper_files = [util, package / 'depaper.py']
+
+    create_script(enpaper_files, Path('enpaper'))
+    create_script(depaper_files, Path('depaper'))
+
+
+def create_script(files: list[Path], dst: Path):
+    text = '\n'.join([file.read_text() for file in files])
+
+    text = text.replace('import paper_secret.util as util', '')
+    text = text.replace('util.execute_stdin_capture', 'execute_stdin_capture')
+
+    dst.write_text(text)
+    dst.chmod(0o755)
+
+
+if __name__ == '__main__':
+    main()