Workarounds to run Decred in windows.

Running BSX in windows is highly discouraged.
If you have no choice at least use the WSL docker setup instead.

basicswap/interface/dcr/util.py

@@ -11,34 +11,51 @@ import subprocess
 
 def createDCRWallet(args, hex_seed, logging, delay_event):
     logging.info('Creating DCR wallet')
+
     (pipe_r, pipe_w) = os.pipe()  # subprocess.PIPE is buffered, blocks when read
-    p = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=pipe_w, stderr=pipe_w)
+
+    if os.name == 'nt':
+        str_args = ' '.join(args)
+        p = subprocess.Popen(str_args, shell=True, stdin=subprocess.PIPE, stdout=pipe_w, stderr=pipe_w)
+    else:
+        p = subprocess.Popen(args, stdin=subprocess.PIPE, stdout=pipe_w, stderr=pipe_w)
+
+    def readOutput():
+        buf = os.read(pipe_r, 1024).decode('utf-8')
+        response = None
+        if 'Opened wallet' in buf:
+            pass
+        elif 'Use the existing configured private passphrase' in buf:
+            response = b'y\n'
+        elif 'Do you want to add an additional layer of encryption' in buf:
+            response = b'n\n'
+        elif 'Do you have an existing wallet seed' in buf:
+            response = b'y\n'
+        elif 'Enter existing wallet seed' in buf:
+            response = (hex_seed + '\n').encode('utf-8')
+        elif 'Seed input successful' in buf:
+            pass
+        elif 'Upgrading database from version' in buf:
+            pass
+        elif 'Ticket commitments db upgrade done' in buf:
+            pass
+        elif 'The wallet has been created successfully' in buf:
+            pass
+        else:
+            raise ValueError(f'Unexpected output: {buf}')
+        if response is not None:
+            p.stdin.write(response)
+            p.stdin.flush()
 
     try:
         while p.poll() is None:
+            if os.name == 'nt':
+                readOutput()
+                delay_event.wait(0.1)
+                continue
             while len(select.select([pipe_r], [], [], 0)[0]) == 1:
-                buf = os.read(pipe_r, 1024).decode('utf-8')
+                readOutput()
-                response = None
+                delay_event.wait(0.1)
-                if 'Use the existing configured private passphrase' in buf:
-                    response = b'y\n'
-                elif 'Do you want to add an additional layer of encryption' in buf:
-                    response = b'n\n'
-                elif 'Do you have an existing wallet seed' in buf:
-                    response = b'y\n'
-                elif 'Enter existing wallet seed' in buf:
-                    response = (hex_seed + '\n').encode('utf-8')
-                elif 'Seed input successful' in buf:
-                    pass
-                elif 'Upgrading database from version' in buf:
-                    pass
-                elif 'Ticket commitments db upgrade done' in buf:
-                    pass
-                else:
-                    raise ValueError(f'Unexpected output: {buf}')
-                if response is not None:
-                    p.stdin.write(response)
-                    p.stdin.flush()
-            delay_event.wait(0.1)
     except Exception as e:
         logging.error(f'dcrwallet --create failed: {e}')
     finally:

bin/basicswap_run.py

@@ -91,6 +91,9 @@ def startDaemon(node_dir, bin_dir, daemon_bin, opts=[], extra_config={}):
         stdout_dest = subprocess.PIPE
         stderr_dest = subprocess.PIPE
 
+    if extra_config.get('use_shell', False):
+        str_args = ' '.join(args)
+        return Daemon(subprocess.Popen(str_args, shell=True, stdin=subprocess.PIPE, stdout=stdout_dest, stderr=stderr_dest, cwd=datadir_path), opened_files)
     return Daemon(subprocess.Popen(args, stdin=subprocess.PIPE, stdout=stdout_dest, stderr=stderr_dest, cwd=datadir_path), opened_files)
 
 
@@ -245,11 +248,12 @@ def runClient(fp, data_dir, chain, start_only_coins):
             if c == 'decred':
                 appdata = v['datadir']
                 extra_opts = [f'--appdata="{appdata}"', ]
+                use_shell: bool = True if os.name == 'nt' else False
                 if v['manage_daemon'] is True:
                     swap_client.log.info(f'Starting {display_name} daemon')
                     filename = 'dcrd' + ('.exe' if os.name == 'nt' else '')
 
-                    extra_config = {'add_datadir': False, 'stdout_to_file': True, 'stdout_filename': 'dcrd_stdout.log'}
+                    extra_config = {'add_datadir': False, 'stdout_to_file': True, 'stdout_filename': 'dcrd_stdout.log', 'use_shell': use_shell}
                     daemons.append(startDaemon(appdata, v['bindir'], filename, opts=extra_opts, extra_config=extra_config))
                     pid = daemons[-1].handle.pid
                     swap_client.log.info('Started {} {}'.format(filename, pid))
@@ -264,7 +268,7 @@ def runClient(fp, data_dir, chain, start_only_coins):
                         wallet_pwd = os.getenv('WALLET_ENCRYPTION_PWD', '')
                     if wallet_pwd != '':
                         extra_opts.append(f'--pass="{wallet_pwd}"')
-                    extra_config = {'add_datadir': False, 'stdout_to_file': True, 'stdout_filename': 'dcrwallet_stdout.log'}
+                    extra_config = {'add_datadir': False, 'stdout_to_file': True, 'stdout_filename': 'dcrwallet_stdout.log', 'use_shell': use_shell}
                     daemons.append(startDaemon(appdata, v['bindir'], filename, opts=extra_opts, extra_config=extra_config))
                     pid = daemons[-1].handle.pid
                     swap_client.log.info('Started {} {}'.format(filename, pid))