From 6acae46c846b598a6a1721e57572bae0a5f919f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C4=B0lkecan=20Bozdo=C4=9Fan?= <ilkecan@protonmail.com>
Date: Tue, 3 Mar 2026 18:34:09 +0300
Subject: [PATCH] lib: don't inherit unused functions

---
 lib/attrsets.nix         | 5 ++---
 lib/customisation.nix    | 1 -
 lib/deprecated/misc.nix  | 6 ------
 lib/fileset/internal.nix | 8 --------
 lib/filesystem.nix       | 2 --
 lib/modules.nix          | 1 -
 lib/systems/parse.nix    | 4 ----
 7 files changed, 2 insertions(+), 25 deletions(-)

diff --git a/lib/attrsets.nix b/lib/attrsets.nix
index dac850823242..932b66b9cfb6 100644
--- a/lib/attrsets.nix
+++ b/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
diff --git a/lib/customisation.nix b/lib/customisation.nix
index c44dbb5f9270..dfdb64cbf3e2 100644
--- a/lib/customisation.nix
+++ b/lib/customisation.nix
@@ -20,7 +20,6 @@ let
     take
     length
     filterAttrs
-    optionalString
     flip
     head
     pipe
diff --git a/lib/deprecated/misc.nix b/lib/deprecated/misc.nix
index 7865f0ce760f..092b3abfd6a0 100644
--- a/lib/deprecated/misc.nix
+++ b/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
diff --git a/lib/fileset/internal.nix b/lib/fileset/internal.nix
index 08db1a38c1d0..675027c1fee0 100644
--- a/lib/fileset/internal.nix
+++ b/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:
diff --git a/lib/filesystem.nix b/lib/filesystem.nix
index 39f565329b03..27f3ab1c5ce1 100644
--- a/lib/filesystem.nix
+++ b/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
     ;
diff --git a/lib/modules.nix b/lib/modules.nix
index bbaa984be0d7..c67ea2247ca7 100644
--- a/lib/modules.nix
+++ b/lib/modules.nix
@@ -12,7 +12,6 @@ let
     concatMap
     concatStringsSep
     elem
-    elemAt
     filter
     foldl'
     functionArgs
diff --git a/lib/systems/parse.nix b/lib/systems/parse.nix
index 7774c16500d9..cc3be74f86f8 100644
--- a/lib/systems/parse.nix
+++ b/lib/systems/parse.nix
@@ -47,13 +47,9 @@ let
 
   inherit (lib.types)
     enum
-    float
     isType
     mkOptionType
-    number
     setType
-    string
-    types
     ;
 
   setTypes =