Issue with "Simple SeaMonkey build": can't run python client.py checkout

[logological]

MDN URL: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Simple_SeaMonkey_build

What information was incorrect, unhelpful, or incomplete?

The instructions for building SeaMonkey don't work. The given steps fail at the command python client.py checkout:

$ hg clone https://hg.mozilla.org/comm-central/
destination directory: comm-central
applying clone bundle from https://hg.cdn.mozilla.net/comm-central/74208194eb432fafc1c3b4b8e5d7014a4f55b7cd.zstd-max.hg
adding changesets
adding manifests
adding file changes                                                           
added 31342 changesets with 156166 changes to 24183 files                     
finished applying clone bundle
searching for changes
no changes found
31342 local changesets published
updating to branch default

$ cd comm-central/

$ python client.py checkout
python: can't open file 'client.py': [Errno 2] No such file or directory

Specific section or headline?

Building SeaMonkey

What did you expect to see?

Something other than an error message.

Did you test this? If so, how?

Yes; see the shell output above.

MDN Content page report details

• Folder: en-us/mozilla/developer_guide/build_instructions/simple_seamonkey_build
• MDN URL: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Simple_SeaMonkey_build
• GitHub URL: https://github.com/mdn/content/blob/master/files/en-us/mozilla/developer_guide/build_instructions/simple_seamonkey_build/index.html
• Report started: 2020-12-29T09:07:10.873Z

[logological]

This issue is part of a wider problem with the SeaMonkey checkout/build documentation which I have just filed at SeaMonkey Bug 1684460.

[himanshugarg]

This page doesn'exist any more. Also see the linked bug in #725 (comment)

[himanshugarg]

This bug can perhaps be closed as the page is no more on MDN.

[hamishwillee]

Thanks @himanshugarg . Closing.