joinmarket: automatically generate wallet

pkgs/joinmarket/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, python3 }:
+{ stdenv, fetchurl, python3, pkgs }:
 
 let
   version = "0.7.0";
@@ -32,11 +32,13 @@ let
     joinmarketdaemon
   ];
 
+  genwallet = pkgs.writeScriptBin "genwallet" (builtins.readFile ./genwallet/genwallet.py);
+
   pythonEnv = python.withPackages (_: runtimePackages);
 in
 stdenv.mkDerivation {
   pname = "joinmarket";
-  inherit version src;
+  inherit version src genwallet;
 
   buildInputs = [ pythonEnv ];
 
@@ -57,6 +59,7 @@ stdenv.mkDerivation {
     cpBin tumbler.py
     cpBin wallet-tool.py
     cpBin yg-privacyenhanced.py
+    cp $genwallet/bin/genwallet $out/bin/jm-genwallet
 
     chmod +x -R $out/bin
     patchShebangs $out/bin

pkgs/joinmarket/genwallet/genwallet.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+"""
+Prototype: demonstrate you can automatically generate a wallet
+"""
+
+import sys
+import os
+from optparse import OptionParser
+from jmclient import load_program_config, add_base_options, SegwitLegacyWallet, create_wallet, jm_single
+from jmbase.support import get_log, jmprint
+
+log = get_log()
+
+def main():
+    parser = OptionParser(
+    usage='usage: %prog [options] wallet_file_name password',
+    description='Create a wallet with the given wallet name and password.')
+    add_base_options(parser)
+    (options, args) = parser.parse_args()
+    if options.wallet_password_stdin:
+        stdin = sys.stdin.read()
+        password = stdin.encode("utf-8")
+    else:
+        assert len(args) > 1, "must provide password via stdin (see --help), or as second argument."
+        password = args[1].encode("utf-8")
+    load_program_config(config_path=options.datadir)
+    wallet_root_path = os.path.join(jm_single().datadir, "wallets")
+    wallet_name = os.path.join(wallet_root_path, args[0])
+    wallet = create_wallet(wallet_name, password, 4, SegwitLegacyWallet)
+    jmprint("recovery_seed:{}"
+         .format(wallet.get_mnemonic_words()[0]), "important")
+    wallet.close()
+
+if __name__ == "__main__":
+    main()