Download nightly build based on checksum

[PJUllrich]

Should close #42

Instead of downloading the nightly build to always the same folder ~/Library/Application\ Support/Zed/extensions/work/elixir/expert-nightly which doesn't overwrite the existing installation since the -nightly suffix never changes, I use the checksum from the expert_checksums.txt file as a folder name - and therefore as a "version" which gets overwritten the next time a nightly release is pushed.

I closed the previous PR #43 to move this to a feature branch

[PJUllrich]

Just FYI, ideally the zed_extension_api would return the digest as well in the GitHubReleaseAsset. Then we wouldn't need to fetch and parse the checksum TXT. But I'm too scared to touch the magic of the WASM stuff there :D

[MrSubidubi]

Just FYI, ideally the zed_extension_api would return the digest as well in the GitHubReleaseAsset. Then we wouldn't need to fetch and parse the checksum TXT. But I'm too scared to touch the magic of the WASM stuff there :D

Guess what I was looking into prior to merging your other PR 🙂 Very much agree here.

We actually have this within Zed nowaways, but never exposed this to extensions. I'll ask the guy managing this stuff internally about it and then get back to you timely.

Other than that, given the limitations, looks good.

[PJUllrich]

@MrSubidubi haha, very nice. Let me know once you have it and I'd be happy to update this PR or create a new one if we merge this in as a quickfix beforehand.

[PJUllrich]

@MrSubidubi do you think we could merge and release this workaround as a quickfix until we get the GithubReleaseAsset.digest field? This extension is currently broken (unless manually fixed) at the moment.

[MrSubidubi]

Looks good besides one comment. Happy to quickly get this out after once this is resolved.

[MrSubidubi]

Looks nice, thank you for the fast follow-up! And thanks for your fix here!