abort
add
all
any
attrNames
attrValues
baseNameOf
compareVersions
concatLists
currentSystem
deepSeq
derivation
dirOf
div
elem
elemAt
fetchurl
fetchTarball
filter
filterSource
fromJSON
genList
getAttr
getEnv
hasAttr
hashString
head
import
intersectAttrs
isAttrs
isBool
isFunction
isInt
isList
isNull
isString
length
lessThan
listToAttrs
map
mul
parseDrvName
pathExists
readDir
readFile
removeAttrs
replaceStrings
seq
sort
stringLength
sub
substring
tail
throw
toFile
toJSON
toPath
toString
toXML
trace
typeOf
foldl'

----------------------------------------------------

[
	["function", "abort"],
	["function", "add"],
	["function", "all"],
	["function", "any"],
	["function", "attrNames"],
	["function", "attrValues"],
	["function", "baseNameOf"],
	["function", "compareVersions"],
	["function", "concatLists"],
	["function", "currentSystem"],
	["function", "deepSeq"],
	["function", "derivation"],
	["function", "dirOf"],
	["function", "div"],
	["function", "elem"],
	["function", "elemAt"],
	["function", "fetchurl"],
	["function", "fetchTarball"],
	["function", "filter"],
	["function", "filterSource"],
	["function", "fromJSON"],
	["function", "genList"],
	["function", "getAttr"],
	["function", "getEnv"],
	["function", "hasAttr"],
	["function", "hashString"],
	["function", "head"],
	["function", "import"],
	["function", "intersectAttrs"],
	["function", "isAttrs"],
	["function", "isBool"],
	["function", "isFunction"],
	["function", "isInt"],
	["function", "isList"],
	["function", "isNull"],
	["function", "isString"],
	["function", "length"],
	["function", "lessThan"],
	["function", "listToAttrs"],
	["function", "map"],
	["function", "mul"],
	["function", "parseDrvName"],
	["function", "pathExists"],
	["function", "readDir"],
	["function", "readFile"],
	["function", "removeAttrs"],
	["function", "replaceStrings"],
	["function", "seq"],
	["function", "sort"],
	["function", "stringLength"],
	["function", "sub"],
	["function", "substring"],
	["function", "tail"],
	["function", "throw"],
	["function", "toFile"],
	["function", "toJSON"],
	["function", "toPath"],
	["function", "toString"],
	["function", "toXML"],
	["function", "trace"],
	["function", "typeOf"],
	["function", "foldl'"]
]

----------------------------------------------------

Checks for built-in functions.