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Merge pull request #98 from hercules-ci/easyOverlay-support-simplistic-fake-pkgs

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`easyOverlay`: support simplistic fake pkgs
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Robert Hensing 2023-01-04 20:23:07 +01:00 • committed by GitHub
commit c089237966
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2 changed files with 9 additions and 4 deletions
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6
dev/tests/eval-tests.nix
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@ -17,13 +17,13 @@ rec {
}; };
empty = mkFlake empty = mkFlake
{ self = { }; } { inputs.self = { }; }
{ {
systems = [ ]; systems = [ ];
}; };
example1 = mkFlake example1 = mkFlake
{ self = { }; } { inputs.self = { }; }
{ {
systems = [ "a" "b" ]; systems = [ "a" "b" ];
perSystem = { system, ... }: { perSystem = { system, ... }: {
@ -32,7 +32,7 @@ rec {
}; };
easyOverlay = mkFlake easyOverlay = mkFlake
{ self = { }; } { inputs.self = { }; }
{ {
imports = [ flake-parts.flakeModules.easyOverlay ]; imports = [ flake-parts.flakeModules.easyOverlay ];
systems = [ "a" ]; systems = [ "a" ];

7
extras/easyOverlay.nix
View file

@ -44,7 +44,12 @@ in
config = { config = {
flake.overlays.default = final: prev: flake.overlays.default = final: prev:
let let
system = prev.stdenv.hostPlatform.system; system =
prev.stdenv.hostPlatform.system or (
prev.system or (
throw "Could not determine the `hostPlatform` of Nixpkgs. Was this overlay loaded as a Nixpkgs overlay, or was it loaded into something else?"
)
);
perSys = (getSystem system).extendModules { perSys = (getSystem system).extendModules {
modules = [ modules = [
{ {