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mirror of https://github.com/NixOS/mobile-nixos.git synced 2024-12-15 11:03:37 +03:00
mobile-nixos/default.nix
2021-02-23 20:17:19 -05:00

42 lines
1.4 KiB
Nix

{ device ? null, configuration ? null, pkgs ? null }@args:
let
# Selection of the configuration can by made either through NIX_PATH,
# through local.nix or as a parameter.
defaultConfiguration =
let
configPathFromNixPath = (builtins.tryEval <mobile-nixos-configuration>).value;
in
if configPathFromNixPath != false then
[ configPathFromNixPath ]
else if configuration != null then
[ configuration ]
else if (builtins.pathExists ./local.nix) then
builtins.trace ''
${"\n"}
********************************************
* WARNING: evaluation includes ./local.nix *
********************************************
'' [ (import ./local.nix) ]
else
[]
;
in
import ./lib/eval-with-configuration.nix (args // {
configuration = defaultConfiguration;
additionalHelpInstructions = ''
You can build the `-A build.default` attribute to build an empty and
un-configured image. That image can be configured using `local.nix`.
** Note that an unconfigured image may appear to hang at boot. **
An alternative is to use one of the `examples` system. They differ in their
configuration. An example that should be building, and working using
cross-compilation is the `examples/hello` system. Read its README for more
information.
$ nix-build examples/hello --argstr device ${device} -A build.default
'';
})