lib: don't inherit unused functions

lib/attrsets.nix

@@ -4,9 +4,8 @@
 { lib }:
 
 let
-  inherit (builtins) head length typeOf;
-  inherit (lib.asserts) assertMsg;
-  inherit (lib.trivial) oldestSupportedReleaseIsAtLeast mergeAttrs;
+  inherit (builtins) head length;
+  inherit (lib.trivial) mergeAttrs;
   inherit (lib.strings)
     concatStringsSep
     concatMapStringsSep

lib/customisation.nix

@@ -20,7 +20,6 @@ let
     take
     length
     filterAttrs
-    optionalString
     flip
     head
     pipe

lib/deprecated/misc.nix

@@ -6,26 +6,20 @@ let
     any
     attrByPath
     attrNames
-    compare
     concat
-    concatMap
     elem
     filter
     foldl
     foldr
-    genericClosure
     head
     imap1
-    init
     isAttrs
     isFunction
     isInt
     isList
-    lists
     listToAttrs
     mapAttrs
     mergeAttrs
-    meta
     nameValuePair
     tail
     toList

lib/fileset/internal.nix

@@ -7,7 +7,6 @@ let
     isAttrs
     isPath
     isString
-    nixVersion
     pathExists
     readDir
     split
@@ -21,7 +20,6 @@ let
     attrValues
     mapAttrs
     mapAttrsToList
-    optionalAttrs
     zipAttrsWith
     ;
 
@@ -48,7 +46,6 @@ let
     append
     splitRoot
     hasStorePathPrefix
-    splitStorePath
     ;
 
   inherit (lib.path.subpath)
@@ -62,11 +59,6 @@ let
     substring
     stringLength
     hasSuffix
-    versionAtLeast
-    ;
-
-  inherit (lib.trivial)
-    inPureEvalMode
     ;
 in
 # Rare case of justified usage of rec:

lib/filesystem.nix

@@ -7,14 +7,12 @@
 # Tested in lib/tests/filesystem.sh
 let
   inherit (builtins)
-    readDir
     pathExists
     toString
     ;
 
   inherit (lib.filesystem)
     pathIsDirectory
-    pathIsRegularFile
     pathType
     packagesFromDirectoryRecursive
     ;

lib/modules.nix

@@ -12,7 +12,6 @@ let
     concatMap
     concatStringsSep
     elem
-    elemAt
     filter
     foldl'
     functionArgs

lib/systems/parse.nix

@@ -47,13 +47,9 @@ let
 
   inherit (lib.types)
     enum
-    float
     isType
     mkOptionType
-    number
     setType
-    string
-    types
     ;
 
   setTypes =