Unable to copy site files to .cache Source and destination must not be the same.

[sudhyr]

Preliminary Checks

• This issue is not a duplicate. Before opening a new issue, please search existing issues: https://github.com/gatsbyjs/gatsby/issues
• This issue is not a question, feature request, RFC, or anything other than a bug report. Please post those things in GitHub Discussions: https://github.com/gatsbyjs/gatsby/discussions

I've seen similar issues reported, but no solutions.

• Gatsby develop problem: Source and destination must not be the same #26200
• Source and destination must not be the same #23588

What I have found so far..

• it works after deleting .cache folder
• It works in gatsby 2

I'm assuming there is something wrong in my package version or node version. Any ideas on where to look.

Description

Brand new gatsby new starter project. gatsby develop fails to start the second time. I've tried other starters minimal gatsby 3 starters, same result.

Reproduction Link

https://github.com/rihdus/bug-gstarter

Steps to Reproduce

1. npx gatsby new gs
2. cd gs
3. yarn start
4. Ctrl-C (stop develop)
5. yarn start

Expected Result

gatsby development server should start

Actual Result

development server fails to start.
here is the error

➜ yarn develop
yarn run v1.22.10
$ gatsby develop
success open and validate gatsby-configs, load plugins - 0.499s
success onPreInit - 0.023s
success initialize cache - 0.005s

 ERROR 

Unable to copy site files to .cache Source and destination must not be the same.



  Error: Source and destination must not be the same.
  
  - stat.js:80 
    [gs]/[fs-extra]/lib/util/stat.js:80:17
  
  - stat.js:38 
    [gs]/[fs-extra]/lib/util/stat.js:38:16
  
  - polyfills.js:299 callback
    [gs]/[graceful-fs]/polyfills.js:299:20
  

not finished copy gatsby files - 0.157s

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Environment

System:
    OS: macOS 11.2.1
    CPU: (16) x64 Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 14.16.1 -
/var/folders/rc/18f_4nld7b96xzxppv88yy6w0000gn/T/yarn--1626187282898-0.11442893238808827/node
    Yarn: 1.22.10 -
/var/folders/rc/18f_4nld7b96xzxppv88yy6w0000gn/T/yarn--1626187282898-0.11442893238808827/yarn
    npm: 6.14.12 - ~/.nvm/versions/node/v14.16.1/bin/npm
  Languages:
    Python: 2.7.16 - /usr/bin/python
  Browsers:
    Chrome: 91.0.4472.114
    Safari: 14.0.3
  npmPackages:
    gatsby: ^3.9.0 => 3.9.0
    gatsby-plugin-gatsby-cloud: ^2.9.0 => 2.9.0
    gatsby-plugin-image: ^1.9.0 => 1.9.0
    gatsby-plugin-manifest: ^3.9.0 => 3.9.0
    gatsby-plugin-offline: ^4.9.0 => 4.9.0
    gatsby-plugin-react-helmet: ^4.9.0 => 4.9.0
    gatsby-plugin-sharp: ^3.9.0 => 3.9.0
    gatsby-source-filesystem: ^3.9.0 => 3.9.0
    gatsby-transformer-sharp: ^3.9.0 => 3.9.0

Config Flags

No response

[LekoArts]

Hi!

Sorry you're running into an issue. I've tried reproducing but didn't see the issue both on my Windows WSL2 instance and on my Mac. I'm afraid with this state of information we can't do much about it.

You could try debugging the fs-extra code like in serverless-nextjs/serverless-next.js#461

[sudhyr]

The error is coming from fs-extra@8.1.0. Here is what I found.
The file in question is blank.css.
It's being copied from node_modules/gatsby/cache-dir/blank.css to .cache/blank.css

I traced the call stack to this line#438 in gatsby inititalize.ts.

gatsby/packages/gatsby/src/services/initialize.ts

Lines 434 to 439 in b348b7c

	const srcDir = `${__dirname}/../../cache-dir`
	const siteDir = cacheDirectory
	const tryRequire = `${__dirname}/../utils/test-require-error.js`
	try {
	await fs.copy(srcDir, siteDir)
	await fs.copy(tryRequire, `${siteDir}/test-require-error.js`)

@LekoArts do you think, this could be an issue with fs-extra ?

[github-actions]

Hiya!

This issue has gone quiet. Spooky quiet. 👻

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[github-actions]

Hey again!

It’s been 60 days since anything happened on this issue, so our friendly neighborhood robot (that’s me!) is going to close it.
Please keep in mind that I’m only a robot, so if I’ve closed this issue in error, I’m HUMAN_EMOTION_SORRY. Please feel free to comment on this issue or create a new one if you need anything else.
As a friendly reminder: the best way to see this issue, or any other, fixed is to open a Pull Request. Check out gatsby.dev/contribute for more information about opening PRs, triaging issues, and contributing!

Thanks again for being part of the Gatsby community! 💪💜

[ZeldOcarina]

Hi! I'm having this issue too after I moved the project to an external ssd. Basically I can start a dev instance only after a Gatsby clean.. weird..

[ZeldOcarina]

Ok I've fixed it by running gatsby clean and yarn install again on the directory.