Fix Linux build on Darwin

Without this patch running the following on MacOS:

  nix-build release.nix -A build.x86_64-linux

results in the following error during the configuration phase (note that Nix
should be configured with a x86_64-linux build machine):

  building '/nix/store/jb6ca1gmplyb69ayd43z7fb0y9npxd53-hydra-0.1.2581.8b5948f4cf12424c04df67a6eb136c9846fb2cfd.drv' on 'ssh://my-linux-build-machine'...
  ...
  checking whether /nix/store/s6bhdppx66bkgf741vk4d29hgsj1h1zp-hydra-perl-deps/bin/nix-store is recent enough... ./configure: line 16254: /nix/store/s6bhdppx66bkgf741vk4d29hgsj1h1zp-hydra-perl-deps/bin/nix-store: cannot execute binary file: Exec format error
  no
  configure: error: `/nix/store/s6bhdppx66bkgf741vk4d29hgsj1h1zp-hydra-perl-deps/bin/nix-store' doesn't support `--timeout'; please use a newer version.
  build time elapsed:  0m1.624s 0m1.774s 0m9.366s 0m6.110s
  builder for '/nix/store/jb6ca1gmplyb69ayd43z7fb0y9npxd53-hydra-0.1.2581.8b5948f4cf12424c04df67a6eb136c9846fb2cfd.drv' failed with exit code 1

This problem is that the `nix` dependency of hydra is selected from a nixpkgs
set configured with a default `system` parameter,
i.e. `builtin.currentSystem`. This means that the hydra derivation which is
build for and on Linux depends on the nix derivation build for Darwin.

The fix is to select nix from the nixpkgs set configured with a system specified
by the user.
This commit is contained in:
Bas van Dijk 2019-03-15 11:22:10 +01:00
parent 8b5948f4cf
commit e9d032bfe9

View file

@ -37,8 +37,9 @@ in
rec { rec {
build = genAttrs' (system: build = genAttrs' (system:
let pkgs = import nixpkgs { inherit system; }; in
with import nixpkgs { inherit system; }; with pkgs;
let let