[Nix-dev] A few questions about ARM support and NixOS on a Chromebook

Lluís Batlle i Rossell viric at viric.name
Thu Jan 29 22:42:24 CET 2015

Hello all,

I'll try the next days whether I can update the pieces. I'm using native
armv5tel, not cross builds, as usual in nixos-on-arm.

1) Build a static busybox that works for the purpose.
2) Build release-14.12 or master
3) Commit the busybox to the bootstrap svn repository (if I am correct)
4) Make stdenv reference that busybox

Let's hope that'd be enough to go on. armv6 (raspberry pi) should be able to use
the armv5tel binary just fine.

I bet I have the slowest system of all of the present here... I'll go at my
pace. If you fix it earlier, commit or submit PR. :)


On Wed, Jan 28, 2015 at 04:29:25PM +0100, Bjørn Forsman wrote:
> On 28 January 2015 at 08:42, Luke Clifton <ltclifton at gmail.com> wrote:
> [...]
> > I once used to think that full system cross compilation was the only way you
> > should do things (I was an idealist). But it is a dead end. Unless you have
> > thousands of hours to throw at the problem, it won't work.
> Me too. I totally agree :-)
> > Have you made any progress on this yourself?
> Nope, not really. I'm finding the nixpkgs/nixos/stdenv bootstrap
> process quite difficult to grap, so I've been putting it off...
> All I have is this branch[1] that has some cross-compilation fixes
> (borrowed from Buildroot[2]) for some basic packages (python, systemd,
> ...), as a step towards a "cross-compiled bootstrap image" that can be
> loaded in QEMU to do further native compilation.
> So far I've been thinking that we need to cross compile a fully
> working (although minimal) nixos system for QEMU, but I'm not sure
> this is strictly needed. Maybe we can bootstrap nix inside QEMU from a
> tiny set of packages (gcc, libc, make)? But I'm not sure how to do it.
> @nbp has some ideas:
> https://github.com/NixOS/nixpkgs/issues/4963#issuecomment-64956636.
> Best regards,
> Bjørn Forsman
> [1] https://github.com/bjornfor/nixpkgs/tree/cross-compile-fixes
> [2] http://buildroot.uclibc.org/
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