SingleValueSetting {...}{.pure.} = enum
  arguments,                  ## experimental: the arguments passed after '-r'
  outFile,                    ## experimental: the output file
  outDir,                     ## the output directory
  nimcacheDir,                ## the location of the 'nimcache' directory
  projectName,                ## the project's name that is being compiled
  projectPath,                ## experimental: some path to the project that is being compiled
  projectFull,                ## the full path to the project that is being compiled
  command, ## experimental: the command (e.g. 'c', 'cpp', 'doc') passed to
          ## the Nim compiler
  commandLine,                ## experimental: the command line passed to Nim
  linkOptions,                ## additional options passed to the linker
  compileOptions,             ## additional options passed to the C/C++ compiler
  ccompilerPath               ## the path to the C/C++ compiler

MultipleValueSetting {...}{.pure.} = enum
  nimblePaths,                ## the nimble path(s)
  searchPaths,                ## the search path for modules
  lazyPaths,                  ## experimental: even more paths
  commandArgs,                ## the arguments passed to the Nim compiler
  cincludes,                  ## the #include paths passed to the C/C++ compiler
  clibs                       ## libraries passed to the C/C++ compiler

proc querySetting(setting: SingleValueSetting): string {...}{.compileTime, noSideEffect,
    raises: [], tags: [].}

proc querySettingSeq(setting: MultipleValueSetting): seq[string] {...}{.compileTime,
    noSideEffect, raises: [], tags: [].}