svgbobrus: init at 2017-08-29

[matthiasbeyer]

Things done

• Tested using sandboxing
  (nix.useSandbox on NixOS,
  or option build-use-sandbox in nix.conf
  on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • Linux
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.

---

Pinging @kevincox as requested.

This fails with

ERROR: The Cargo.lock file doesn't exist

[Mic92]

The solution is to add a Cargo.lock. Either ask the project to do so or run cargo update in the project and add the Cargo.lock as a patch to the project. Otherwise we can not build this project reproducible.

[matthiasbeyer]

Ah, I see my problem: The commandline binary "svgbob_cli" is actually a subdir of the repository. And there is also the Cargo.lock file.

How to specify a subdir as the actual target?

[Mic92]

Set the sourceRoot variable would be my wild guess.

[kevincox]

Seems like it should work. This is what

nixpkgs/pkgs/applications/version-management/pijul/default.nix

Line 14 in 7c696a0

sourceRoot = "${name}/pijul";

does.

[matthiasbeyer]

Hm... does not work for me. Also not without the "rus" part.

[kevincox]

I'll take a look when I get home but often what I do it add set -i somewhere so that I can see what it is doing, that often helps me find out what I am setting wrong. You can see other rust packages to find spots where you can inject this.

[Mic92]

You also need to update rustRegistry:

Using rust registry from /nix/store/z01ibnk837dchls2xirjm171k2sb51f6-rustRegistry-2017-08-27
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/z01ibnk837dchls2xirjm171k2sb51f6-rustRegistry-2017-08-27`
    Updating registry `file:///nix/store/z01ibnk837dchls2xirjm171k2sb51f6-rustRegistry-2017-08-27`
error: no matching package named `svgbob` found (required by `svgbob_cli`)
location searched: registry file:///nix/store/z01ibnk837dchls2xirjm171k2sb51f6-rustRegistry-2017-08-27
version required: = 0.2.1
versions found: 0.2.0, 0.1.14, 0.1.13, ...
note: keeping build directory ‘/tmp/nix-build-svgbob-fetch.drv-5’
builder for ‘/nix/store/3c5gh2c48k56112apv3wz407dv98iq4i-svgbob-fetch.drv’ failed with exit code 101
cannot build derivation ‘/nix/store/8svy5vvhxr03a8ragj5apyjgyb2a5xyc-svgbob.drv’: 1 dependencies couldn't be built
error: build of ‘/nix/store/8svy5vvhxr03a8ragj5apyjgyb2a5xyc-svgbob.drv’ failed
/run/current-system/sw/bin/nix-shell: failed to build all dependencies

[matthiasbeyer]

Okay, now I only get a compiletime error (when compiling svgbobrus) because the nightly toolchain is required instead of stable. Everything else seems to work.

[kevincox]

Hmm, I don't actually know how to use nightly. There is a passthru.rustc which might work but I haven't tried it.

[Mic92]

There is rustBeta and rustNightly. However both are broken at the moment in master. rustNightlyBin.buildRustPackage might work.

[orivej]

#30088 has deleted rustNightly. @matthiasbeyer would you try to resurrect or close this PR?

[matthiasbeyer]

Well, I do not care about that software this much anymore... shall we close it then?

[Mic92]

this is up to you.