den.lib (deprecated)

`den.lib.parametric`

Wraps an aspect with a __functor that filters includes by argument compatibility. Default uses atLeast matching.

den.lib.parametric { nixos.x = 1; includes = [ ... ]; }

`den.lib.parametric.atLeast`

Same as parametric. Functions match if all required params are present.

`den.lib.parametric.exactly`

Functions match only if required params exactly equal provided params.

den.lib.parametric.exactly { includes = [ ({ host }: ...) ]; }

`den.lib.parametric.fixedTo`

Calls the aspect with a fixed context, ignoring the actual context:

den.lib.parametric.fixedTo { host = myHost; } someAspect

`den.lib.parametric.expands`

Extends the received context with additional attributes before dispatch:

den.lib.parametric.expands { extra = true; } someAspect

`den.lib.canTake`

Function argument introspection.

`den.lib.canTake params fn`

Returns true if fn’s required arguments are satisfied by params (atLeast).

`den.lib.canTake.atLeast params fn`

Same as canTake.

`den.lib.canTake.exactly params fn`

Returns true only if fn’s required arguments exactly match params.

`den.lib.take`

Conditional function application.

`den.lib.take.atLeast fn ctx`

Calls fn ctx if canTake.atLeast ctx fn, otherwise returns {}.

`den.lib.take.exactly fn ctx`

Calls fn ctx if canTake.exactly ctx fn, otherwise returns {}.

`den.lib.take.unused`

_unused: used: used — ignores first argument, returns second. Used for discarding aspect-chain in import-tree.

Context shortcuts

Shortcuts built with den.lib.take.exactly and den.lib.parametric.fixedTo.

`den.lib.perHost aspect`

Run aspect only in { host } contexts.

`den.lib.perUser aspect`

Run aspect only in { host, user } contexts.

`den.lib.perHome aspect`

Run aspect only in { home } contexts.

`den.lib.resolveStage`

`den.lib.resolveStage name ctx`

Resolves a stage by name with a given context attrset. Returns an aspect-like record. Used internally by the pipeline and by den.lib.diag convenience wrappers.

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