Allow offline builds of chiapos with local repos

[Rigidity]

[coveralls-official[bot]]

Pull Request Test Coverage Report for Build 10494997837

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 79.051%

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Totals
Change from base Build 10410315404:	0.0%
Covered Lines:	3498
Relevant Lines:	4425

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💛 - Coveralls

[hoffmang9]

Agreeing with Arvid that the build process should work the same whether building locally or on CI. I think we're both missing something about the motivation here?

[arvidn]

The discussion happened on keybase yesterday. The summary is:

• rust creates don't allow the build step to pull things from the internet. I suspect the main reason is to ensure builds are deterministic.
• our cmake file uses FetchContent to download dependencies, which means building the rust bindings fail (because internet access is blocked)
• We want a way to download and bundle the dependencies in the crate separate from the building step

[github-actions[bot]]

'This PR has been flagged as stale due to no activity for over 60 days. It will not be automatically closed, but it has been given a stale-pr label and should be manually reviewed.'