Minor issue when using npm run dev and installing tasks in a subfolder

[tcompa]

npm run dev has a "watch" feature, which keeps checking in subfolders for file changes.
If you set the fractal-server FRACTAL_TASKS_DIR environment variable to be a subfolder of the one where you run npm run dev, then it will also watch the tasks venvs. And because there are quite a few tasks, it will fail with a traceback like the one below.

This is a very minor issue, but fixing it could make some testing easier (so that one does not need to reinstall tasks multiple times, e.g. if they are in some /tmp folder).

In principle we could tackle this by configuring vite appropriately, see e.g. vitejs/vite#8619

---

node:internal/errors:490
    ErrorCaptureStackTrace(err);
    ^

Error: ENOSPC: System limit for number of file watchers reached, watch '/home/tommaso/Fractal/fractal-web/lib/fractal-server/Tasks/.fractal/fractal-tasks-core0.11.0/venv/lib/python3.10/site-packages/torch/include/ATen/ops/_spdiags_compositeexplicitautograd_dispatch.h'
    at FSWatcher.<computed> (node:internal/fs/watchers:247:19)
    at Object.watch (node:fs:2343:34)
    at createFsWatchInstance (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:50470:17)
    at setFsWatchListener (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:50517:15)
    at NodeFsHandler._watchWithNodeFs (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:50672:14)
    at NodeFsHandler._handleFile (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:50736:23)
    at NodeFsHandler._addToNodeFs (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:50978:21)
Emitted 'error' event on FSWatcher instance at:
    at FSWatcher._handleError (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:52169:10)
    at NodeFsHandler._addToNodeFs (file:///home/tommaso/Fractal/fractal-web/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:50986:18) {
  errno: -28,
  syscall: 'watch',
  code: 'ENOSPC',
  path: '/home/tommaso/Fractal/fractal-web/lib/fractal-server/Tasks/.fractal/fractal-tasks-core0.11.0/venv/lib/python3.10/site-packages/torch/include/ATen/ops/_spdiags_compositeexplicitautograd_dispatch.h',
  filename: '/home/tommaso/Fractal/fractal-web/lib/fractal-server/Tasks/.fractal/fractal-tasks-core0.11.0/venv/lib/python3.10/site-packages/torch/include/ATen/ops/_spdiags_compositeexplicitautograd_dispatch.h'
}

Node.js v18.16.1

[tcompa]

Closing as obsolete.