nix-instantiate -A pkgsCross.aarch64-multiplatform.python3Packages.numpy

this one is 6.4s on my machine (NIX_SHOW_STATS=1) v.s. 0.45s for plain python3Packages.numpy

In reply to @suskeyhose:matrix.org
Right now I'm trying to find what to add to my include directories on nix when on my arch machine it's /usr/x86_64-w64-mingw32/include, which obviously doesn't exist on nix and I can't find enough docs on pkgsCross.mingwW64 to figure out how to find the equivalent directory.

In reply to @artturin:matrix.org
Add your deps to buildInputs and they'll be in your "include" dirs

nix-repl> pkgsCross.mingwW64.windows
{
  callPackage = { ... };
  crossThreadsStdenv = «derivation /nix/store/7pn0mi0ifhmxxqcmm0y0i2i0pi3hviq8-stdenv-linux.drv»;
  cygwinSetup = «derivation /nix/store/j9nxv205rwvrl1y4k4mjjy1zcdwliv55-cygwin-setup-x86_64-w64-mingw32-20131101.drv»;
  dlfcn = «derivation /nix/store/zsr99i1s18902ns6h3dssagicgm5xzal-dlfcn-x86_64-w64-mingw32-1.3.1.drv»;
  libgnurx = «derivation /nix/store/ldslf0cx0m3y5665dlm7w0vgkmf4f8ls-libgnurx-x86_64-w64-mingw32-2.5.1.drv»;
  mcfgthreads = «derivation /nix/store/gph336lb24llfljpa9cplb7hrp7cpl9r-mcfgthread-x86_64-w64-mingw32-1.6.1.drv»;
  mingw_runtime = «derivation /nix/store/47q84dw3vzys2v55jpfss27qmd36mpm5-mingwrt-x86_64-w64-mingw32-5.0.2.drv»;
  mingw_w64 = «derivation /nix/store/lk181ykl0ks0d8k8b0imd1qjkf5bkbih-mingw-w64-x86_64-w64-mingw32-11.0.1.drv»;
  mingw_w64_headers = «derivation /nix/store/wzdl8xnhd2i0a11mlgnkap9dp7lhps6m-mingw_w64-headers-11.0.1.drv»;
  mingw_w64_pthreads = «derivation /nix/store/xppqqfvly2vydnm05w26x0qx4ddhmk99-mingw_w64-pthreads-x86_64-w64-mingw32-11.0.1.drv»;
  mingwrt = «derivation /nix/store/47q84dw3vzys2v55jpfss27qmd36mpm5-mingwrt-x86_64-w64-mingw32-5.0.2.drv»;
  newScope = { ... };
  npiperelay = «derivation /nix/store/m18c6j9d2a5hvz35s9qqv00czy6x3x1f-npiperelay-x86_64-w64-mingw32-0.1.0.drv»;
  overrideScope = { ... };
  overrideScope' = { ... };
  packages = { ... };
  pthreads = «derivation /nix/store/v392vvmy3rkqf7y0b5alz0sf687yvv4i-pthreads-w32-x86_64-w64-mingw32-2.9.1.drv»;
  w32api = «derivation /nix/store/pkyqn9n95q6s079wgwr5hnd9dlp803cx-w32api-x86_64-w64-mingw32-3.17-2.drv»;
}

doing a devShell

          devShells.default = pkgs.mkShell {
            packages = with pkgs; [
              bear
              doxygen
              nodejs
              lldb_18
              llvmPackages_18.bintools
              clang-tools_18
              valgrind
              man-pages
              man-pages-posix
            ];

            nativeBuildInputs = with pkgs; [
              llvmPackages_18.clang
              pkg-config
              wine64
            ] ++ (with windows-pkgs.pkgsCross.mingwW64.buildPackages; [
              llvmPackages_18.clang
            ]);

            buildInputs = with pkgs; [
              libblocksruntime
            ] ++ (with windows-pkgs.pkgsCross.mingwW64.buildPackages; [
              libblocksruntime
            ]);

            NOVENDOR = "yes";
            DEBUG = "yes";
            LEAKCHECK = "yes";
            UBSAN_OPTIONS="suppressions=template.supp";
            hardeningDisable = [ "all" ];
            CPATH = "${pkgs.llvmPackages_18.clang}/resource-root/include:${pkgs.glibc.dev}/include";
            WINCPATH = with pkgs.pkgsCross.mingwW64.buildPackages;
              "${llvmPackages_18.clang}/resource-root/include";
          };