Build failure: python-cryptography fails to cross compile for armv7l

[kjeremy]

Steps To Reproduce

Steps to reproduce the behavior:

1. Clone nixpkgs
2. nix build .#pkgsCross.armv7l-hf-multiplatform.python3Packages.cryptography

Build log

Complete log: https://gist.github.com/kjeremy/930924ab9b0704db331a14b5649a4a70

running: "armv7l-unknown-linux-gnueabihf-gcc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-march=armv7-a" "-mfpu=vfpv3-d16" "-I" "/nix/store/pzf6dnxg8gf04xazzjdwarm7s03cbrgz-python3-3.10.12/include/python3.10" "-I" "/nix/store/fkcygywf96d1cvgz1fyln0szsh23yxjq-openssl-armv7l-unknown-linux-gnueabihf-3.0.10-dev/include" "-Wall" "-Wextra" "-Wconversion" "-Wno-error=sign-conversion" "-Wno-unused-parameter" "-DPy_LIMITED_API=0x030700f0" "-o" "/build/cryptography-41.0.3/src/rust/target/armv7-unknown-linux-gnueabihf/release/build/cryptography-cffi-1eecc4eb12ccf2f6/out/673c62801e1286cf-_openssl.o" "-c" "/build/cryptography-41.0.3/src/rust/target/armv7-unknown-linux-gnueabihf/release/build/cryptography-cffi-1eecc4eb12ccf2f6/out/_openssl.c"
  cargo:warning=In file included from /nix/store/pzf6dnxg8gf04xazzjdwarm7s03cbrgz-python3-3.10.12/include/python3.10/Python.h:50,
  cargo:warning=                 from /build/cryptography-41.0.3/src/rust/target/armv7-unknown-linux-gnueabihf/release/build/cryptography-cffi-1eecc4eb12ccf2f6/out/_openssl.c:57:
  cargo:warning=/nix/store/pzf6dnxg8gf04xazzjdwarm7s03cbrgz-python3-3.10.12/include/python3.10/pyport.h:746:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
  cargo:warning=  746 | #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
  cargo:warning=      |  ^~~~~
  exit status: 1

Additional context

nixpkgs rev ca012a0

This looks similar to #205807 which is reported as fixed.

Notify maintainers

@Artturin @Cynerd

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 6.1.55, NixOS, 23.11 (Tapir), 23.11.20230925.6500b45`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.0`
 - channels(root): `"nixos"`
 - channels(jkolb): `""`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

[kjeremy]

The include directory for python looks suspicious. I tried setting PYO3_CROSS_INCLUDE_DIR in the setup hook but that doesn't seem to make a difference.

[rblrblrblrbl]

Hello @kjeremy
I'm facing the same issue, did you succeed in making it work, with potentially some workarounds ?

[kjeremy]

@rblrblrblrbl no I have not yet.

[kjeremy]

Hello @kjeremy I'm facing the same issue, did you succeed in making it work, with potentially some workarounds ?

This seems to work for me now.

[kjeremy]

Closing