scala - How to depend on a setting in the "current" config -


how can declare 2 custom sbt settings, , b, define b in global config scope content depends on a, define differently in several config scopes in such way resulting value of b different in each config though b defined once?

consider example targethost below, defined differently in remote in other config, , scriptcontent depending on it:

object mybuild  extends build {      lazy val remote = config("remote") describedas ("configuration remote environement ")      lazy val targethost = settingkey[string]("private hostname of master server")      lazy val scriptcontent = settingkey[string]("some deployment script")      lazy val root: project = project("meme", file(".")).     settings(         name := "hello",          targethost := "localhost",         targethost in remote := "snoopy",          scriptcontent := s"""             # bash deployment here             /usr/local/uberdeploy.sh ${targethost.value}         """     )     }

i scriptcontent have different value in both config scopes, since depends on targethost in global scope value same: 

> scriptcontent [info] [info]             # bash deployment here [info]             /usr/local/uberdeploy.sh localhost [info] > remote:scriptcontent [info] [info]             # bash deployment here [info]             /usr/local/uberdeploy.sh localhost [info]

whereas i'd obtain following: 

> scriptcontent [info] [info]             # bash deployment here [info]             /usr/local/uberdeploy.sh localhost [info] > remote:scriptcontent [info] [info]             # bash deployment here [info]             /usr/local/uberdeploy.sh snoopy [info]

found it! question duplicate (sorry...), , relevant answer here: how can make sbt key see settings current configuration?

=> need apply settings multiple times, once each scope, in order force re-evaluation of content of scriptsetting:

import sbt._ import sbt.keys._  object mybuild  extends build {      lazy val remote = config("remote") describedas ("configuration remote environement ")      lazy val targethost = settingkey[string]("private hostname of master server")      lazy val scriptcontent = settingkey[string]("some deployment script")      lazy val scriptsettings = seq(         scriptcontent := s"""             # bash deployment here             /usr/local/uberdeploy.sh ${targethost.value}         """     )      lazy val root: project = project("meme", file("."))     .settings(         name := "hello",             targethost := "localhost",         targethost in remote := "snoopy"         )         .settings(scriptsettings: _*)     .settings(inconfig(remote)(scriptsettings) :_*) }

yields expected result: 

> scriptcontent [info] [info]             # bash deployment here [info]             /usr/local/uberdeploy.sh localhost [info] > remote:scriptcontent [info] [info]             # bash deployment here [info]             /usr/local/uberdeploy.sh snoopy [info] >

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