Thanks for this :)
When I run
npx -p yo -p generator-sld -- yo sld:watermelon
on my windows 10 PC, I get:
Initialized empty Git repository in K:/dev/2standard/frameworks/gatsby/generators/.git/
� Cloning the repository...
remote: Enumerating objects: 172, done.
remote: Counting objects: 100% (172/172), done.
remote: Compressing objects: 100% (102/102), done.
remote: Total 172 (delta 78), reused 143 (delta 53), pack-reused 0
Receiving objects: 100% (172/172), 406.33 KiB | 1.47 MiB/s, done.
Resolving deltas: 100% (78/78), done.
From https://github.com/slarsendisney/gatsby-watermelon

• branch master -> FETCH_HEAD
• [new branch] master -> origin/master
  'rm' is not recognized as an internal or external command,
  operable program or batch file.

all proceeds smoothly until the very end, when it fails as a result of:

concurrently 'npm run hello && gatsby develop -o -p 5051' 'supervisor --watch server/index.js server/index.js'

I get:

[0] ''npm' is not recognized as an internal or external command,
[0] operable program or batch file.
[1] 'run' is not recognized as an internal or external command,
[1] operable program or batch file.
[0] 'npm exited with code 1
[1] run exited with code 1
[2] 'hello' is not recognized as an internal or external command,
[2] operable program or batch file.
[2] hello exited with code 1

I can run hello and gatsby develop OK but not supervisor. I can fix this with cross-env so will install it - what does supervisor do?
The site does not work - I get
polling-xhr.js:267 GET http://localhost:3000/socket.io/?EIO=3&transport=polling&t=NBXAW5u net::ERR_CONNECTION_REFUSED
'new Client state' appears in the console but the state is not updated.

Thanks again for your work - this is a very minor issue, just thought it might help.
C.

Common folder not being found when running via npx.