openmw: fix build on GCC 14

[SigmaSquadron]

Fixes #370061

This patch cannot be upstreamed because OpenMW does not maintain stable releases of the engine, only the in-development master branch.

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:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review pr 370126". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• No release notes: Change is minor.
• Fits CONTRIBUTING.md.

---

Add a 👍 reaction to pull requests you find important.

[SigmaSquadron]

cc @marius851000. It seems like you haven't joined the NixOS org?

cc @Sirius902 for testing.

[Sirius902]

cc @marius851000. It seems like you haven't joined the NixOS org?

cc @Sirius902 for testing.

nix run 'github:SigmaSquadron/nixpkgs?ref=push-xqlpmvsuovsw#openmw' seems to build without issue on x86_64-linux and the game works fine, thanks!

[SigmaSquadron]

portmod-rust fails due to #332957 (unrelated)

error[E0282]: type annotations needed for `Box<_>`
  --> /build/portmod-rust-2.6.2-vendor.tar.gz/time/src/format_description/parse/mod.rs:83:9
   |
83 |     let items = format_items
   |         ^^^^^
...
86 |     Ok(items.into())
   |              ---- type must be known at this point
   |
   = note: this is an inference error on crate `time` caused by an API change in Rust 1.80.0; update `time` to version `>=0.3.35` by calling `cargo update`

For more information about this error, try `rustc --explain E0282`.
error: could not compile `time` (lib) due to 1 previous error

---

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 370126

x86_64-linux

❌ 2 packages failed to build:

• portmod
• portmod.dist

✅ 1 package built:

• openmw