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Modular, context-aware and aspect-oriented dendritic Nix configurations.
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-4
docs/src/content/docs/guides/custom-classes.mdx
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docs/src/content/docs/guides/custom-classes.mdx
···
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each = host.users;
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fromClass = _user: "user";
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intoClass = _user: class; # the class being resolved: nixos or darwin.
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intoPath = user: [ "users" "users" user.userName ]
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fromAspect = user: den.aspects.${user.aspect};
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adaptArgs = os-args: { osConfig = os-args.config; };
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};
···
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intoClass = _: class;
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intoPath = _: [ "environment" "persistance" "/nix/persist/system" ];
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fromAspect = _: lib.head aspect-chain;
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guard = { options, ... }: options ? environment.persistance;
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};
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den.hosts.my-laptop.includes = [ persys ];
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# becomes nixos.environment.persistance."/nix/persist/system".hideMounts = true;
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den.hosts.my-laptop.persys.hideMounts = true;
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```
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When the guard returns `false`, forwarded settings are silently ignored.
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## Creating Your Own
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···
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each = host.users;
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fromClass = _user: "user";
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intoClass = _user: class; # the class being resolved: nixos or darwin.
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intoPath = user: [ "users" "users" user.userName ];
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fromAspect = user: den.aspects.${user.aspect};
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adaptArgs = os-args: { osConfig = os-args.config; };
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};
···
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intoClass = _: class;
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intoPath = _: [ "environment" "persistance" "/nix/persist/system" ];
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fromAspect = _: lib.head aspect-chain;
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guard = { options, ... }@osArgs: options ? environment.persistance;
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};
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den.hosts.my-laptop.includes = [ persys ];
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# becomes nixos.environment.persistance."/nix/persist/system".hideMounts = true;
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den.aspects.my-laptop.persys.hideMounts = true;
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```
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One cool thing about these custom classes is that aspects can simply define
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settings at them, without having to worry if the options they depend or
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some feature is enabled. The guard itself is reponsible for that check
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in only one place, instead of having `mkIf` in a lot of places.
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## Creating Your Own
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