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mkChangedOptionModule

lib.modules.mkChangedOptionModule

Docs pulled from | This Revision | about 1 hour ago


Single "from" version of mkMergedOptionModule. Return a module that causes a warning to be shown if the "from" option is defined; the defined value can be used in the "mergeFn" to set the "to" value. This function can be used to change an option into another that has a different type.

"mergeFn" takes the module "config" as a parameter and must return a value of "to" option type.

mkChangedOptionModule [ "a" "b" "c" ] [ "x" "y" "z" ] (config: let value = getAttrFromPath [ "a" "b" "c" ] config; in if value > 100 then "high" else "normal")

  • options.a.b.c is a removed int option
  • options.x.y.z is a new str option that supersedes a.b.c

This show a warning if a.b.c is set, and set the value of x.y.z to the result of the change function

Inputs

from

1. Function argument

to

2. Function argument

changeFn

3. Function argument


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