Process forking does not work with XDebug

[Tisza Gergő]

PsySH just hangs forever at the stream_select call in ProcessForker.

Psy Shell v0.11.8 (PHP 7.2.31-1+0~20200514.41+debian9~1.gbpe2a56b+wmf1 — cli) by Justin Hileman

with Xdebug v2.7.2, Copyright (c) 2002-2019, by Derick Rethans

I think this used to work in the past and I'm not sure what on my system changed, so it might be specific to the PHP, XDebug or PsySH version.

[Justin Hileman]

can you share the output of psy\info()?

[Tisza Gergő]

=> [
     "PsySH version" => "v0.11.8",
     "PHP version" => "7.2.31-1+0~20200514.41+debian9~1.gbpe2a56b+wmf1",
     "OS" => "Linux",
     "default includes" => [],
     "require semicolons" => false,
     "error logging level" => 32767,
     "config file" => [
       "default config file" => "~/.config/psysh/config.php",
       "local config file" => null,
       "PSYSH_CONFIG env" => false,
     ],
     "loop listeners" => [
       "Psy\ExecutionLoop\ProcessForker",
     ],
     "commands" => [
       "help" => "Psy\Command\HelpCommand",
       "?" => "Psy\Command\HelpCommand",
       "ls" => "Psy\Command\ListCommand",
       "dir" => "Psy\Command\ListCommand",
       "dump" => "Psy\Command\DumpCommand",
       "doc" => "Psy\Command\DocCommand",
       "rtfm" => "Psy\Command\DocCommand",
       "man" => "Psy\Command\DocCommand",
       "show" => "Psy\Command\ShowCommand",
       "wtf" => "Psy\Command\WtfCommand",
       "last-exception" => "Psy\Command\WtfCommand",
       "wtf?" => "Psy\Command\WtfCommand",
       "whereami" => "Psy\Command\WhereamiCommand",
       "throw-up" => "Psy\Command\ThrowUpCommand",
       "timeit" => "Psy\Command\TimeitCommand",
       "trace" => "Psy\Command\TraceCommand",
       "buffer" => "Psy\Command\BufferCommand",
       "buf" => "Psy\Command\BufferCommand",
       "clear" => "Psy\Command\ClearCommand",
       "edit" => "Psy\Command\EditCommand",
       "sudo" => "Psy\Command\SudoCommand",
       "history" => "Psy\Command\HistoryCommand",
       "hist" => "Psy\Command\HistoryCommand",
       "exit" => "Psy\Command\ExitCommand",
       "quit" => "Psy\Command\ExitCommand",
       "q" => "Psy\Command\ExitCommand",
     ],
     "updates" => [
       "update available" => false,
       "latest release version" => "v0.11.8",
       "update check interval" => "never",
       "update cache file" => "~/.config/psysh/update_check.json",
     ],
     "pcntl" => [
       "pcntl available" => true,
       "posix available" => true,
       "use pcntl" => true,
     ],
     "input" => [
       "interactive mode" => "auto",
       "input interactive" => true,
       "yolo" => false,
     ],
     "readline" => [
       "readline available" => true,
       "readline enabled" => true,
       "readline service" => "Psy\Readline\Libedit",
       "readline library" => "EditLine wrapper",
       "readline name" => "psysh",
     ],
     "output" => [
       "color mode" => "auto",
       "output decorated" => null,
       "output verbosity" => "normal",
       "output pager" => "/usr/bin/less -R -F -X",
     ],
     "history" => [
       "history file" => "~/.config/psysh/psysh_history",
       "history size" => null,
       "erase duplicates" => null,
     ],
     "docs" => [
       "manual db file" => "/usr/local/share/psysh/php_manual.sqlite",
       "sqlite available" => true,
       "db lang" => "en",
       "db version" => "1.3.29",
       "db svn rev" => "352311",
       "db built at" => "Mon, 18 Jan 2021 15:05:08 +0000",
       "db hash" => "1cd305a82157a60712fa40124652715a",
     ],
     "autocomplete" => [
       "tab completion enabled" => true,
       "bracketed paste" => false,
       "custom matchers" => [],
     ],
   ]