Setting up dev environment as described here https://github.com/ProseMirror/prosemirrorhttps://github.com/ProseMirror/prosemirror fails:
root@development:/var/www/virtual/development/prosemirror# bin/pm install
Skipping cloning of model (directory exists)
Skipping cloning of transform (directory exists)
Skipping cloning of state (directory exists)
Skipping cloning of view (directory exists)
Skipping cloning of keymap (directory exists)
Skipping cloning of inputrules (directory exists)
Skipping cloning of history (directory exists)
Skipping cloning of collab (directory exists)
Skipping cloning of commands (directory exists)
Skipping cloning of gapcursor (directory exists)
Skipping cloning of schema-basic (directory exists)
Skipping cloning of schema-list (directory exists)
Skipping cloning of menu (directory exists)
Skipping cloning of example-setup (directory exists)
Skipping cloning of markdown (directory exists)
Skipping cloning of dropcursor (directory exists)
Skipping cloning of test-builder (directory exists)
Skipping cloning of changeset (directory exists)
Skipping cloning of website (directory exists)
Running yarn install
child_process.js:624
throw err;
^
Error: spawnSync yarn ENOENT
at _errnoException (util.js:1024:11)
at spawnSync (child_process.js:579:20)
at Object.execFileSync (child_process.js:616:13)
at run (/var/www/virtual/development/prosemirror/bin/pm.js:80:16)
at install (/var/www/virtual/development/prosemirror/bin/pm.js:141:3)
at start (/var/www/virtual/development/prosemirror/bin/pm.js:40:9)
at Object.<anonymous> (/var/www/virtual/development/prosemirror/bin/pm.js:364:1)
at Module._compile (module.js:635:30)
at Object.Module._extensions..js (module.js:646:10)
at Module.load (module.js:554:32)
I have no idea how to fix this. Any ideas?