fake.modules transposition for aspect-oriented Dendritic Nix. with cross-aspect dependencies. Discussions: https://oeiuwq.zulipchat.com/join/nqp26cd4kngon6mo3ncgnuap/
dendrix.oeiuwq.com/Dendritic.html
dendritic
nix
aspect
oriented
test aspect providers (#5)
* test aspect providers
* fix test
authored by
GitHub
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README.md
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README.md
···
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They are actually `[ config.bar.provides.itself config.baz.provides.itself ]`.
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but you can also define custom providers that can inspect the argument's `aspect` and `class`
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and return some another aspect accordingly.
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```nix
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flake.aspects.alice.provides.os-user = { aspect, class, ... }: {
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# perhaps regexp matching on aspect or class. eg, match all "hosts" aspects.
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nixos = { };
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}
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```
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the `os-user` provider can be now included in a `requires` list:
···
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They are actually `[ config.bar.provides.itself config.baz.provides.itself ]`.
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but you can also define custom providers that can inspect the argument's `aspect` and `class`
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and return some set of modules accordingly. you can also use this feature to have aspects that
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like as proxy/routers of dependencies.
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```nix
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flake.aspects.alice.provides.os-user = { aspect, class }:
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if someCondition aspect && class == "nixos" then { nixos = { ... }; } else { }
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```
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the `os-user` provider can be now included in a `requires` list:
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checkmate.nix
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checkmate.nix
···
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inherit expr expected;
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};
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aspects."test requirements on aspects" =
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let
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flake = mkFlake ({
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flake.aspects =
···
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expected = [
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"os"
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"user"
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];
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in
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{
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inherit expr expected;
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};
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aspects."test provider arguments" =
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let
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flake = mkFlake ({
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flake.aspects =
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{ config, ... }:
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{
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aspectOne.requires = with config.aspectTwo.provides; [
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foo
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bar
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];
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aspectOne.classOne = { }; # required for mixing dependencies.
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aspectTwo = {
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classOne.bar = [ "class one not included" ];
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classTwo.bar = [ "class two not included" ];
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provides.foo =
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{ class, aspect }:
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{
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classOne.bar = [ "foo:${aspect}:${class}" ];
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classTwo.bar = [ "foo class two not included" ];
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};
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provides.bar = _: {
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# classOne is missing on bar
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classTwo.bar = [ "bar class two not included" ];
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};
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};
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};
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});
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expr = lib.sort (a: b: a < b) (evalMod "classOne" flake.modules.classOne.aspectOne).bar;
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expected = [
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"foo:aspectOne:classOne"
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];
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in
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{