I am using
pkgsCross.wasi32.stdenv to build a C project for WASI and it seems to work fine. However, to get a DWARF fix (as mentioned here: https://github.com/bytecodealliance/wasmtime/issues/1613) that is in LLVM 10 I have been trying to find a way to override the stdenv.
I tried this:
nix-build -A pkgsCross.wasi32.llvmPackages_10.stdenv '<nixpkgs>'
but that fails with:
configure: error: /nix/store/k89nm2jva0qmvd970f84wq2iq1iwm9bs-bash-4.4-p23/bin/bash ./config.sub wasm32-unknown-wasi failed builder for '/nix/store/brq8dca0nzrgwj68ifxdpg69g1qqpgxx-wasm32-unknown-wasi-binutils-2.31.1.drv' failed with exit code 1
When comparing with the requisites between
pkgsCross.wasi32.stdenv the latter seems to use the llvm-binutils instead. My question is if pkgsCross..llvmPackages_X.stdenv` is supposed to work and otherwise what would be the best way to override the LLVM version used in a WASI cross toolchain?