Don't retry on "unsupported protocol" error #3474
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Maybe it should be added to the list of non-transient errors? |
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Gee, if only I had read that comment... (thanks, I totally overlooked that block's purpose). Will update this in a moment. |
When encountering an unsupported protocol, there's no need to retry.
Chances are, it won't suddenly be supported between retry attempts;
error instead. Otherwise, you see something like the following:
$ nix-env -i -f git://git@github.com/foo/bar
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 335 ms
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 604 ms
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 1340 ms
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 2685 ms
With this change, you now see:
$ nix-env -i -f git://git@github.com/foo/bar
error: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1)
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When encountering an unsupported protocol, there's no need to retry.
Chances are, it won't suddenly be supported between retry attempts;
error instead. Otherwise, you see something like the following:
With this change, you now see:
Fixes #3464.
First contribution here. I went the path of least resistance: just add a check if the error code indicates an unsupported protocol, and don't trigger retries if so. Let me know if I need to do anything else, or there's a better/preferred way to go about this.