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[DONTMERGE] simulate ofborg run on #274089#282387

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cole-h wants to merge 4 commits intoNixOS:stagingfrom
cole-h:try-run-ofborg-on-zerocallusedregs
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[DONTMERGE] simulate ofborg run on #274089#282387
cole-h wants to merge 4 commits intoNixOS:stagingfrom
cole-h:try-run-ofborg-on-zerocallusedregs

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@cole-h cole-h commented Jan 20, 2024

Description of changes

Some API weirdness at the time caused ofborg to hit the limit of number of commit statuses on a given SHA and context, which would cause internal errors when GH told it it couldn't set those statuses. Submit this new PR with the same contents to approximate an ofborg run on that PR.

Things done

  • Built on platform(s)
    • x86_64-linux
    • aarch64-linux
    • x86_64-darwin
    • aarch64-darwin
  • For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
    • sandbox = relaxed
    • sandbox = true
  • Tested, as applicable:
  • Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
  • Tested basic functionality of all binary files (usually in ./result/bin/)
  • 24.05 Release Notes (or backporting 23.05 and 23.11 Release notes)
    • (Package updates) Added a release notes entry if the change is major or breaking
    • (Module updates) Added a release notes entry if the change is significant
    • (Module addition) Added a release notes entry if adding a new NixOS module
  • Fits CONTRIBUTING.md.

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this uses the value `used-gpr` which seems to be a commonly
chosen value for general use
this package set can be used to trial new hardening flags or
enable those which are still known to cause some problems
…sm to selectively unsupport zerocallusedregs

this allows a compiler derivation to provide a
hardeningUnsupportedFlagsByTargetPlatform passthru attr
that will be called with the targetPlatform to determine
the unsupported hardening flags for that platform.

we can do this because even though a clang compiler is
multi-target by nature, cc-wrapper effectively fixes the
target platform at wrapping time. otherwise we'd have to
sniff the intended target at runtime, which wouldn't
be fun at all.

the advantage of using a new attribute instead of
allowing hardeningUnsupportedFlags to optionally be a
function is that hardeningUnsupportedFlags retains its
simple overriding pattern for simple cases (i.e.
  `(prev.hardeningUnsupportedFlags or []) ++ [ "foo" ]`
) which will continue to work as long as the bottom-most
function of hardeningUnsupportedFlagsByTargetPlatform
falls back to hardeningUnsupportedFlags.
@github-actions github-actions bot added 6.topic: nixos Issues or PRs affecting NixOS modules, or package usability issues specific to NixOS 8.has: documentation This PR adds or changes documentation 8.has: changelog This PR adds or changes release notes 6.topic: stdenv Standard environment labels Jan 20, 2024
@ofborg ofborg bot added 10.rebuild-darwin-stdenv This PR causes stdenv to rebuild on Darwin and must target a staging branch. 10.rebuild-linux-stdenv This PR causes stdenv to rebuild on Linux and must target a staging branch. labels Jan 21, 2024
@ofborg ofborg bot added 10.rebuild-darwin: 501+ This PR causes many rebuilds on Darwin and should normally target the staging branches. 10.rebuild-darwin: 5001+ This PR causes many rebuilds on Darwin and must target the staging branches. 10.rebuild-linux: 501+ This PR causes many rebuilds on Linux and should normally target the staging branches. 10.rebuild-linux: 5001+ This PR causes many rebuilds on Linux and must target the staging branches. labels Jan 21, 2024
@cole-h cole-h closed this Jan 21, 2024
@cole-h cole-h deleted the try-run-ofborg-on-zerocallusedregs branch January 21, 2024 08:14
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Labels

6.topic: nixos Issues or PRs affecting NixOS modules, or package usability issues specific to NixOS 6.topic: stdenv Standard environment 8.has: changelog This PR adds or changes release notes 8.has: documentation This PR adds or changes documentation 10.rebuild-darwin: 501+ This PR causes many rebuilds on Darwin and should normally target the staging branches. 10.rebuild-darwin: 5001+ This PR causes many rebuilds on Darwin and must target the staging branches. 10.rebuild-darwin-stdenv This PR causes stdenv to rebuild on Darwin and must target a staging branch. 10.rebuild-linux: 501+ This PR causes many rebuilds on Linux and should normally target the staging branches. 10.rebuild-linux: 5001+ This PR causes many rebuilds on Linux and must target the staging branches. 10.rebuild-linux-stdenv This PR causes stdenv to rebuild on Linux and must target a staging branch.

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