mirror of
https://github.com/nix-community/nixos-generators.git
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b34a6ac4e6
on nixpkgs versions prior to the commit that changed
config.system.build's type from a lazy attribute set to a submodule.
Prior to this type change, there is no system.build.kexec_tarball option
declared, so the NixOS module system does not resolve
priorities/overrides in the config.build.kexec_tarball definition.
That is, with lib.mkForce, the config.build.kexec_tarball definition
ends up being something like:
{
_type = "override";
content = <...>;
priority = 50;
}
Removing lib.mkForce allows us to successfully and sensibly interpolate
the value (== outPath) of system.build.kexec_tarball in
system.build.kexec_bundle's builder script.
Likewise, no lib.mkOverride for system.build.raw.
33 lines
1.2 KiB
Nix
33 lines
1.2 KiB
Nix
{
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lib,
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options,
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}: let
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# See https://github.com/NixOS/nixpkgs/commit/ccb85a53b6a496984073227fd8c4d4c58889f421
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# This commit changed the type of `system.build` from a lazy attribute set to
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# a submodule. Prior to this commit, it doesn't make sense to qualify, e.g.
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# the `system.build.kexec_tarball` definition with `lib.mkForce`, as this
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# would result in setting the (final/resolved) value of
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# `system.build.kexec_tarball` to something like:
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# {
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# _type = "override";
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# content = <...>;
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# priority = 50;
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# }
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# However, since this commit, `system.build.kexec_tarball` *must* be defined
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# using `lib.mkForce`; otherwise, Nix bails out with a complaint about
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# `system.build.kexec_tarball` being defined in multiple locations.
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systemBuildIsSubmodule = options.system.build.type.name == "submodule";
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optionsLookSane = lib.hasAttrByPath ["system" "build" "type" "name"] options;
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in
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assert (lib.assertMsg optionsLookSane "`options' must be the NixOS module `options' argument"); {
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maybe =
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{
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mkForce = lib.id;
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mkOverride = _: lib.id;
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}
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// (lib.optionalAttrs systemBuildIsSubmodule {
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inherit (lib) mkForce mkOverride;
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});
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}
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