open-watcom-bin: do an unattended instead of a scripted install

[skeuchel]

The open-watcom-bin package is installed via the original command line installer. So far an expect script interacts with the installer to make the appropriate choices. This PR replaces this with an unattended install that provides the settings on the command line instead.

Fixes #351413.

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 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/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 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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[emilazy]

Thanks. We would like to stop using Open Watcom in this package as it has a flaky QEMU‐based build and a problematic licence. Will this work together with #352610 to use the pre‐generated assembly sources or will they need work to combine?

Edit: Sorry, I misread this PR as applying to the VirtualBox package… These changes LGTM.

[emilazy]

Built successfully on x86_64-linux, and seems a lot simpler than using expect.

[blitz]

@skeuchel Thanks for fixing this! Btw, we can probably do unzip instead of running the installer, because it's just a self-extracting ZIP. The only thing needed would be to fix the file permissions afterwards. Binaries are not executable otherwise.