`test_provide_builtins` failing on macOS when matching against `nix --version` output about rnix-lsp

[lilyball]

I can't reproduce this in a nix develop shell or with nix-shell. If I patch the source to print the nix --version output and run that through nix build I get v = "".

[lilyball]

Here's the whole nixver result struct, which is quite interesting:

rnix-lsp> [src/lookup.rs:175] &nixver = Ok(
rnix-lsp>     Output {
rnix-lsp>         status: ExitStatus(
rnix-lsp>             unix_wait_status(
rnix-lsp>                 6,
rnix-lsp>             ),
rnix-lsp>         ),
rnix-lsp>         stdout: "",
rnix-lsp>         stderr: "libc++abi: terminating with uncaught exception of type nix::SysError: \u{1b}[31;1merror:\u{1b}[0m getting status of \u{1b}[35;1m/System/Library/LaunchDaemons/com.apple.oahd.plist\u{1b}[0m: \u{1b}[35;1mOperation not permitted\u{1b}[0m\n",
rnix-lsp>     },
rnix-lsp> )

[lilyball]

If this is a sandboxing issue, that explains why it doesn't reproduce in nix develop or nix-shell. What I don't get is why this still occurs with nix --no-sandbox build. Or why nix is attempting to get the file metadata of /System/Library/LaunchDaemons/com.apple.oahd.plist.

[lilyball]

I filed NixOS/nix#5884 about nix --version failing in the macOS sandbox.