[Nix-dev] Problem compiling a rust program without fetchFromGitHub

[Christian Kauhaus]

Am 21.03.2017 um 16:47 schrieb stewart mackenzie:
> $ nix-garbage-collect then retry

This time I'm getting a new error:

| Fetching /tmp/nix-build-my-rustfmt-fetch.drv-0/rustfmt to /nix/store/7v30ck1i3c1l2j2g461ld3jaq3hvfg01-my-rustfmt-fetch
| Using rust registry from /nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58
| warning: custom registry support via the `registry.index` configuration is being removed, this functionality will not work in the future
|     Updating registry `file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58`
|     Updating registry `file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58`
|     Updating registry `file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58`
|     Updating registry `file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58`
|     Updating registry `file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58`
|     Updating registry `file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58`
| error: no matching package named `syntex_syntax` found (required by `rustfmt`)
| location searched: registry file:///nix/store/gv06zlhm4rnhi7j9s1sjj4njns3ca788-rustRegistry-2017-02-19-d822c58
| version required: = 0.58.1
| versions found: 0.58.0, 0.57.0, 0.56.2, ...
| builder for ‘/nix/store/s23lbgjqvk36c0vgjxxxmg6d22n0jak8-my-rustfmt-fetch.drv’ failed with exit code 101
| cannot build derivation ‘/nix/store/krzc387z5kcwzkyhn3g9vq557272y6na-my-rustfmt.drv’: 1 dependencies couldn't be built

Looks to me that the index is out of sync which the crates snapshot. I've inspected the buildRustPackage code but did not find the place where such a problem could originate from.

syntex_syntax 0.58.1 has been added to crates.io on 2017-02-19.

Needless to say that the nix expression using fetchFromGitHub still works and is yielding exactly the same output as last time, regardless of nix-collect-garbage or whatnot.

BR

Christian

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