Build failure: qt6 mingw (windows) hostPlatform

[seanybaggins]

Steps To Reproduce

Steps to reproduce the behavior:

1. build qt6 for mingw (windows) hostPlatform

nix-build -A 'pkgs.pkgsCross.mingw32.qt6.qtbase'

Build log

error:
       … in the condition of the assert statement

         at /home/sean/nixpkgs/lib/customisation.nix:228:17:

          227|     in commonAttrs // {
          228|       drvPath = assert condition; drv.drvPath;
             |                 ^
          229|       outPath = assert condition; drv.outPath;

       … while evaluating the attribute 'handled'

         at /home/sean/nixpkgs/pkgs/stdenv/generic/check-meta.nix:447:7:

          446|       # or, alternatively, just output a warning message.
          447|       handled =
             |       ^
          448|         {

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: Package ‘qtbase-6.5.1’ in /home/sean/nixpkgs/pkgs/development/libraries/qt-6/modules/qtbase.nix:259 is not available on the requested hostPlatform:
         hostPlatform.config = "i686-w64-mingw32"
         package.meta.platforms = [
           "i686-cygwin"
           "x86_64-cygwin"
           "x86_64-darwin"
           "i686-darwin"
           "aarch64-darwin"
           "armv7a-darwin"
           "i686-freebsd13"
           "x86_64-freebsd13"
           "x86_64-solaris"
           "aarch64-linux"
           "armv5tel-linux"
           "armv6l-linux"
           "armv7a-linux"
           "armv7l-linux"
           "i686-linux"
           "loongarch64-linux"
           "m68k-linux"
           "microblaze-linux"
           "microblazeel-linux"
           "mipsel-linux"
           "mips64el-linux"
           "powerpc64-linux"
           "powerpc64le-linux"
           "riscv32-linux"
           "riscv64-linux"
           "s390-linux"
           "s390x-linux"
           "x86_64-linux"
           "aarch64-netbsd"
           "armv6l-netbsd"
           "armv7a-netbsd"
           "armv7l-netbsd"
           "i686-netbsd"
           "m68k-netbsd"
           "mipsel-netbsd"
           "powerpc-netbsd"
           "riscv32-netbsd"
           "riscv64-netbsd"
           "x86_64-netbsd"
           "i686-openbsd"
           "x86_64-openbsd"
           "x86_64-redox"
         ]
         package.meta.badPlatforms = [ ]
       , refusing to evaluate.

       a) To temporarily allow packages that are unsupported for this system, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1

        Note: For `nix shell`, `nix build`, `nix develop` or any other Nix 2.4+
        (Flake) command, `--impure` must be passed in order to read this
        environment variable.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowUnsupportedSystem = true; }
       in configuration.nix to override this.

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowUnsupportedSystem = true; }
       to ~/.config/nixpkgs/config.nix.

Additional context

I have this building on my local machine using overlays. Here is the dependency tree.

My plan is to open PR's for each dependency until I can add mingw support for qt6. If you are a maintainer of a package that I am making a PR for, please keep in mind a may be blocked upstreaming mingw support for qt6 if PRs linger for a prolonged period of time.

Notify maintainers

@milahu @NickCao @LunNova

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"

• system: "x86_64-linux"
• host os: Linux 6.1.52-valve2, NixOS, 23.11 (Tapir), 23.11.20231029.0cbe9f6
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.17.1
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

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[seanybaggins]

Upstreaming my changes to nixpkgs is taking longer than I expected. Here is the publication of my overlays. Hopefully other members of the community can help me upstream these packages to get qtbase and qtmultimedia cross compiling.
https://github.com/seanybaggins/qt-package-overalys