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BuildRustCrate: Fixing compilation issue on Darwin #74664

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BuildRustCrate: Fixing compilation issue on Darwin #74664

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P-E-Meunier
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@P-E-Meunier P-E-Meunier commented Nov 29, 2019

Motivation for this change

BuildRustCrate was broken on Darwin because of dontStrip (see #27370). This PR also updates BuildRustCrate for a number of other things that were checked in the process of debugging.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • 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 nix-review --run "nix-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.
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@Profpatsch
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(triage) is this still relevant?

Co-Authored-By: Matthew Bauer <mjbauer95@gmail.com>
@P-E-Meunier
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Yes, I just fixed the comments (thanks @matthewbauer, and sorry for the delay).

@andir
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andir commented Jan 28, 2020

Can you give us some kind of description for those various other things that you added? The .rmeta addition (which is now the default) has what kind of consequences? I haven't really found a use-case for them thus I am eager to learn about it.

@P-E-Meunier
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Actually, I don't really know! The .rmeta was added in an attempt to mimic more closely what cargo does now (as opposed to what it was doing when carnix was started). The rmetas are supposed to speed up compilation, although I have no data about this, but might be a good idea to do in the future anyway.

I introduced them before I found out about dontStrip. I haven't been using Carnix too much recently, I could maybe try to benchmark it (and possibly split this PR).

@andir
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andir commented Jan 28, 2020

Actually, I don't really know! The .rmeta was added in an attempt to mimic more closely what cargo does now (as opposed to what it was doing when carnix was started). The rmetas are supposed to speed up compilation, although I have no data about this, but might be a good idea to do in the future anyway.

I introduced them before I found out about dontStrip. I haven't been using Carnix too much recently, I could maybe try to benchmark it (and possibly split this PR).

My understanding is that those files are useful for cargo when buildings dependencies in parallel. Since we have them properly isolated and the processes do not know anything about each other we probably shouldn't take that route.

@andir
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andir commented Jan 28, 2020

@GrahamcOfBorg buildRustCrateTests

@P-E-Meunier
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I believe the rmeta are supposed to be barebones specifications of the library, which might potentially result in smaller closures.

@andir
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andir commented Jan 28, 2020

I believe the rmeta are supposed to be barebones specifications of the library, which might potentially result in smaller closures.

I am tempted to give them a go. I currently have a rare issue where linking multiple .rlib files from different builders results in metadata hashsum mismatches. Maybe that fixes it.

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stale bot commented Jul 26, 2020

Hello, I'm a bot and I thank you in the name of the community for your contributions.

Nixpkgs is a busy repository, and unfortunately sometimes PRs get left behind for too long. Nevertheless, we'd like to help committers reach the PRs that are still important. This PR has had no activity for 180 days, and so I marked it as stale, but you can rest assured it will never be closed by a non-human.

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@stale stale bot added the 2.status: stale https://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md label Jul 26, 2020
@stale stale bot removed the 2.status: stale https://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md label Oct 3, 2020
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stale bot commented Jun 7, 2021

I marked this as stale due to inactivity. → More info

@stale stale bot added the 2.status: stale https://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md label Jun 7, 2021
@wegank wegank closed this Jan 2, 2023
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2.status: merge conflict 2.status: stale https://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md 6.topic: darwin Running or building packages on Darwin 6.topic: rust 10.rebuild-darwin: 1-10 10.rebuild-linux: 11-100
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6 participants