[Nix-dev] but I am a `x86_64-linux'

[Marc Weber]

I'm getting this error again and again..
I'm yet not sure which is the correct way to fix it?
Does it mean that my /etc/nixos version doesn't match the versions fonud in manifest?
Is the only way to fix this once and forever setting up a cross compilation tool chain?

+ nix-build /etc/nixos/nixos -A nixFallback -o /home/marc/nix-tmp
store derivation is /nix/store/79s4bkmcyzby9p1ckl9bbynkwgv4a9s7-nix-0.12pre11304.drv
/nix/store/4xiqf8qpb4wln7wk9v5d75nyvqr0ilks-nix-0.12pre11304
+ PATH=/home/marc/nix-tmp/bin:/home/marc/ms:/home/marc/ms/sh:/home/marc/ms/expect:/home/marc/ms/python/:/home/marc/bin:/nix/var/nix/profiles/per-user/marc/profile/bin:/nix/var/nix/profiles/per-user/marc/profile/sbin:/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:/var/setuid-wrappers:/var/run/current-system/sw/bin:/var/run/current-system/sw/sbin:/home/marc/bashscripte/scripts/:/home/marc/scripts/python/:/usr/local/bin
+ test switch = switch -o switch = boot
+ nix-env -p /nix/var/nix/profiles/system -f /etc/nixos/nixos --set -A system
building path(s) `/nix/store/8pia7ppa16j2jkfy8nhr965bvzq8yi5b-curl'
a `i686-linux' is required to build `/nix/store/mww2hmxmhs4haszjgfbmg5xdm2k9qv1f-curl.drv', but I am a `x86_64-linux'
cannot build derivation `/nix/store/xz8hc5nkk0qykxxqdb1xxmxp2jib2j86-curl-7.17.1.tar.bz2.drv': 1 inputs could not be realised
cannot build derivation `/nix/store/h3hcdyi7f9xplq61yg7g740kk8clidk8-stdenv-linux-initial.drv': 1 inputs could not be realised
cannot build derivation `/nix/store/6ys557pprs0m9624i2s7yhvacy7n7kah-curl-7.17.1.drv': 1 inputs could not be realised
cannot build derivation `/nix/store/h5dj1lbjdjyfdsad7ddxsghs63k80aw6-stdenv-linux.drv': 1 inputs could not be realised
cannot build derivation `/nix/store/6jjd0dacssdihrqfs05lcdmq3d3zm0ml-grub-0.97-patch-1.7.drv': 1 inputs could not be realised
cannot build derivation `/nix/store/7ydcs00rqnn22mx57n5yd7np9lx2sv91-system.drv': 1 inputs could not be realised
error: build of `/nix/store/7ydcs00rqnn22mx57n5yd7np9lx2sv91-system.drv' failed

Thanks
Marc Weber