df09c21fb2
following the plan in https://github.com/NixOS/nixpkgs/pull/189318#discussion_r961764451 also adds an activation script to print the warning during activation instead of during build, otherwise folks using the new CLI that hides build logs by default might never see the warning.
84 lines
2.8 KiB
Nix
84 lines
2.8 KiB
Nix
testModuleArgs@{ config, lib, hostPkgs, nodes, moduleType, ... }:
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let
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inherit (lib) mkOption types mdDoc;
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inherit (types) either str functionTo;
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in
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{
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options = {
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testScript = mkOption {
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type = either str (functionTo str);
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description = mdDoc ''
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A series of python declarations and statements that you write to perform
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the test.
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'';
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};
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testScriptString = mkOption {
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type = str;
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readOnly = true;
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internal = true;
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};
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includeTestScriptReferences = mkOption {
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type = types.bool;
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default = true;
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internal = true;
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};
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withoutTestScriptReferences = mkOption {
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type = moduleType;
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description = mdDoc ''
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A parallel universe where the testScript is invalid and has no references.
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'';
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internal = true;
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visible = false;
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};
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};
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config = {
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withoutTestScriptReferences.includeTestScriptReferences = false;
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withoutTestScriptReferences.testScript = lib.mkForce "testscript omitted";
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testScriptString =
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if lib.isFunction config.testScript
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then
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config.testScript
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{
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nodes =
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lib.mapAttrs
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(k: v:
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if v.virtualisation.useNixStoreImage
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then
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# prevent infinite recursion when testScript would
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# reference v's toplevel
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config.withoutTestScriptReferences.nodesCompat.${k}
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else
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# reuse memoized config
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v
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)
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config.nodesCompat;
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}
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else config.testScript;
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defaults = { config, name, ... }: {
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# Make sure all derivations referenced by the test
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# script are available on the nodes. When the store is
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# accessed through 9p, this isn't important, since
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# everything in the store is available to the guest,
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# but when building a root image it is, as all paths
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# that should be available to the guest has to be
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# copied to the image.
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virtualisation.additionalPaths =
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lib.optional
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# A testScript may evaluate nodes, which has caused
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# infinite recursions. The demand cycle involves:
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# testScript -->
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# nodes -->
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# toplevel -->
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# additionalPaths -->
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# hasContext testScript' -->
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# testScript (ad infinitum)
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# If we don't need to build an image, we can break this
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# cycle by short-circuiting when useNixStoreImage is false.
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(config.virtualisation.useNixStoreImage && builtins.hasContext testModuleArgs.config.testScriptString && testModuleArgs.config.includeTestScriptReferences)
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(hostPkgs.writeStringReferencesToFile testModuleArgs.config.testScriptString);
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};
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};
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}
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