p7zip fails to cross-compile to mingw

[Thesola10]

Steps To Reproduce

Steps to reproduce the behavior:

1. nix-shell -p pkgsCross.mingwW64.p7zip

Build log

gist

Additional context

This can be useful to bundle cross-compiled executables into self-extracting archives, entirely within the Nix environment.

Notify maintainers

@7c6f434c @06kellyjac

Metadata

• system: "x86_64-linux"
• host os: Linux 5.19.10-arch1-1, Arch Atomic, noversion, rolling
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.10.3
• channels(karim): "git-goodies, nixgl, nixos-22.05, nixpkgs, sops"
• channels(root): "nixpkgs"
• nixpkgs: /home/karim/.nix-defexpr/channels/nixpkgs

[06kellyjac]

mingw isn't a marked as a supported target within nixpkgs so we wouldn't expect this to work & this is a request to support it.

As a note does https://github.com/jinfeihan57/p7zip actually support cross compiling to mingw? I'm not seeing many mentions there
The only mention I've found is a closed PR that says it adds "Can build mingw edition on Linux"
https://github.com/jinfeihan57/p7zip/pull/172

I'm thinking this requires upstream changes first

[AtnNn]

@Thesola10 Would 7zz work for you instead? It seems easier to get to cross-compile with mingw: #217472

[Thesola10]

@AtnNn can 7zz build self-extracting archive executables like 7z? If so then that's fine by me

[06kellyjac]

λ nix run nixpkgs#p7zip -- --help | grep sfx
  -sfx[{name}] : Create SFX archive
λ nix run nixpkgs#_7zz -- --help | grep sfx
  -sfx[{name}] : Create SFX archive

Looks like it

I will close this for now since again I think it requires some upstream changes and #217472 is merged now.
Once upstream p7zip supports mingw and someone wants p7zip instead of _7zz then I'm happy to revisit this

---

As a note the issue I linked in my comment above is now gone since the p7zip repo no longer has issues enabled