[Modern] compiler Watchman error

[adjourn]

I get the following log:

> relay-compiler --src ./js --schema ./schema.json

HINT: pass --watch to keep watching for changes.
Watchman:  Watchman was not found in PATH.  See https://facebook.github.io/watchman/docs/install.html for installation instructions
events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: Watchman was not found in PATH.  See https://facebook.github.io/watchman/docs/install.html for installation instructions
    at exports._errnoException (util.js:1022:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
    at onErrorNT (internal/child_process.js:359:16)
    at _combinedTickCallback (internal/process/next_tick.js:74:11)
    at process._tickCallback (internal/process/next_tick.js:98:9)
    at Module.runMain (module.js:607:11)
    at run (bootstrap_node.js:420:7)
    at startup (bootstrap_node.js:139:9)
    at bootstrap_node.js:535:3

System: Windows 10 x64
Version: "relay-compiler": "^1.0.0-rc.1"

Can't find any mentions of Watchman in docs.
Is this a Windows specific error, bug or is this just an "install step" left out from docs?

PS! I get the error with and without the --watch flag.

[mjmahone]

I believe you'll need to install and enable Watchman's alpha Windows release to get this to work: facebook/watchman#19

[adjourn]

@mjmahone As I suspected. I installed Watchman and added it to PATH. Compiler is working now.

[seemple]

@unirey Hi! Could you please explain me how did add Watchman to PATH ? Thanks in advanced!

[adjourn]

@seemple I don't remember, Im not too familiar with OS's mechanics & this is one of those things you don't do very often. But it's a general Windows question, search online for "how to add to windows path".