mirrors/nixpkgs
1
0
Fork 1
mirror of https://github.com/NixOS/nixpkgs.git synced 2024-11-24 06:31:02 +00:00
Code Issues Wiki Activity

nixos: allow adding extra modules through environment

Browse source 
This is useful for adding extra functionality or defaults to _every_
nixos evaluation.

My use case is overriding behaviour for all nixos tests, for example
setting packageOverrides to newer versions and changing some default
dependencies/settings.

By making this accessible through an environment variable, this can now
be fully accomplished externally. No more need to fork
nixos/nixpkgs (which becomes a maintenance burden), just use the channel
instead and plug in via this envvar.
This commit is contained in:
Mathijs Kwik 2014-12-16 17:07:14 +01:00
parent 8bfd6af9ed
commit 73f18fd42f
1 changed files with 5 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
nixos/lib/eval-config.nix
View file

@ -11,15 +11,16 @@
, prefix ? [] , prefix ? []
}: }:
let extraArgs_ = extraArgs; pkgs_ = pkgs; system_ = system; in let extraArgs_ = extraArgs; pkgs_ = pkgs; system_ = system;
extraModules = let e = builtins.getEnv "NIXOS_EXTRA_MODULE_PATH";
rec { in if e == "" then [] else [(import (builtins.toPath e))];
in rec {
# Merge the option definitions in all modules, forming the full # Merge the option definitions in all modules, forming the full
# system configuration. # system configuration.
inherit (pkgs.lib.evalModules { inherit (pkgs.lib.evalModules {
inherit prefix; inherit prefix;
modules = modules ++ baseModules; modules = modules ++ extraModules ++ baseModules;
args = extraArgs; args = extraArgs;
check = check && options.environment.checkConfigurationOptions.value; check = check && options.environment.checkConfigurationOptions.value;
}) config options; }) config options;