diff --git a/pkgs/by-name/li/libetonyek/package.nix b/pkgs/by-name/li/libetonyek/package.nix
index 393f542a9ea9..ec7b9b4a82d1 100644
--- a/pkgs/by-name/li/libetonyek/package.nix
+++ b/pkgs/by-name/li/libetonyek/package.nix
@@ -3,8 +3,7 @@
 , fetchFromGitHub
 , autoreconfHook
 , pkg-config
-# fails on older Boost due to https://github.com/boostorg/phoenix/issues/111
-, boost184
+, boost
 , cppunit
 , glm
 , gperf
@@ -32,7 +31,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
-    boost184
+    boost
     cppunit
     glm
     gperf
diff --git a/pkgs/by-name/li/liblangtag/package.nix b/pkgs/by-name/li/liblangtag/package.nix
index 38f1cc03cac4..5684c18ae009 100644
--- a/pkgs/by-name/li/liblangtag/package.nix
+++ b/pkgs/by-name/li/liblangtag/package.nix
@@ -1,42 +1,28 @@
-{ lib, stdenv, fetchurl, fetchpatch, autoreconfHook, gtk-doc, gettext
+{ lib, stdenv, fetchurl, fetchpatch, autoreconfHook, autoconf-archive, gtk-doc, gettext
 , pkg-config, glib, libxml2, gobject-introspection, gnome-common, unzip
 }:
 
 stdenv.mkDerivation rec {
   pname = "liblangtag";
-  version = "0.6.3";
+  version = "0.6.7";
 
   # Artifact tarball contains lt-localealias.h needed for darwin
   src = fetchurl {
     url = "https://bitbucket.org/tagoh/liblangtag/downloads/${pname}-${version}.tar.bz2";
-    sha256 = "sha256-HxKiCgLsOo0i5U3tuLaDpDycFgvaG6M3vxBgYHrnM70=";
+    hash = "sha256-Xta81K4/PAXJEuYvIWzRpEEjhGFH9ymkn7VmjaUeAw4=";
   };
 
   core_zip = fetchurl {
     # please update if an update is available
-    url = "http://www.unicode.org/Public/cldr/37/core.zip";
-    sha256 = "0myswkvvaxvrz9zwq4zh65sygfd9n72cd5rk4pwacqba4nxgb4xs";
+    url = "http://www.unicode.org/Public/cldr/46/core.zip";
+    hash = "sha256-+86cInWGKtJmaPs0eD/mwznz2S3f61oQoXdftYGBoV0=";
   };
 
   language_subtag_registry = fetchurl {
-    url = "http://www.iana.org/assignments/language-subtag-registry";
-    sha256 = "0y9x5gra6jri4sk16f0dp69p06almnsl48rs85605f035kf539qm";
+    url = "https://web.archive.org/web/20241120202537id_/https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry";
+    hash = "sha256-xy94jbBKP0Ig7yOPutSviCA6uryx7PW2b1lBIPk2+6Q=";
   };
 
-  patches = [
-    # Pull upstream fix for gcc-13 build compatibility
-    (fetchpatch {
-      name = "gcc-13-p1.patch";
-      url = "https://bitbucket.org/tagoh/liblangtag/commits/0b6e9f4616a34146e7443c4e9a7197153645e40b/raw";
-      hash = "sha256-69wJDVwDCP5OPHKoRn9WZNrvfCvmlX3SwtRmcpJHn2o=";
-    })
-    (fetchpatch {
-      name = "gcc-13-p1.patch";
-      url = "https://bitbucket.org/tagoh/liblangtag/commits/1497c4477d0fa0b7df1886951b953dd3cea54427/raw";
-      hash = "sha256-k0Uaeg6YLxVze4fgf0kiyuiZJ5wh2Jq3h7cFPQPtwyo=";
-    })
-  ];
-
   postPatch = ''
     gtkdocize
     cp "${core_zip}" data/core.zip
@@ -50,7 +36,7 @@ stdenv.mkDerivation rec {
       "--with-locale-alias=${stdenv.cc.libc}/share/locale/locale.alias";
 
   buildInputs = [ gettext glib libxml2 gnome-common ];
-  nativeBuildInputs = [ autoreconfHook gtk-doc gettext pkg-config unzip gobject-introspection ];
+  nativeBuildInputs = [ autoreconfHook autoconf-archive gtk-doc gettext pkg-config unzip gobject-introspection ];
 
   meta = with lib; {
     description = "Interface library to access tags for identifying languages";
diff --git a/pkgs/by-name/os/ossia-score/package.nix b/pkgs/by-name/os/ossia-score/package.nix
index ee8e0a99a948..bce8a7b33fd4 100644
--- a/pkgs/by-name/os/ossia-score/package.nix
+++ b/pkgs/by-name/os/ossia-score/package.nix
@@ -8,7 +8,7 @@
 , avahi
 , avahi-compat
 , bluez
-, boost185
+, boost
 , fmt
 , ffmpeg
 , fftw
@@ -43,13 +43,13 @@
 
 clangStdenv.mkDerivation (finalAttrs: {
   pname = "ossia-score";
-  version = "3.2.4";
+  version = "3.3.2";
 
   src = fetchFromGitHub {
     owner = "ossia";
     repo = "score";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-O9v7hhBHVi4OuuCebG3bvjp/MOYu1iPv+lji/wS4O7o=";
+    hash = "sha256-RMPsZIUZNWnnezxdZhW9oA0Cprb89NQhpwX9THHYN4M=";
     fetchSubmodules = true;
   };
 
@@ -57,7 +57,7 @@ clangStdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     alsa-lib
-    boost185
+    boost
     avahi
     avahi-compat
     bluez
diff --git a/pkgs/by-name/sh/shadps4/package.nix b/pkgs/by-name/sh/shadps4/package.nix
index 5484724d886e..58477d157638 100644
--- a/pkgs/by-name/sh/shadps4/package.nix
+++ b/pkgs/by-name/sh/shadps4/package.nix
@@ -4,7 +4,7 @@
   fetchFromGitHub,
   fetchpatch,
   alsa-lib,
-  boost184,
+  boost,
   cmake,
   cryptopp,
   glslang,
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     alsa-lib
-    boost184
+    boost
     cryptopp
     glslang
     ffmpeg
diff --git a/pkgs/by-name/ve/vectorscan/package.nix b/pkgs/by-name/ve/vectorscan/package.nix
index 8525a66e4092..860ea03f7a2d 100644
--- a/pkgs/by-name/ve/vectorscan/package.nix
+++ b/pkgs/by-name/ve/vectorscan/package.nix
@@ -6,7 +6,7 @@
 , ragel
 , util-linux
 , python3
-, boost184
+, boost
 , sqlite
 , pcre
 , enableShared ? !stdenv.hostPlatform.isStatic
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   ] ++ lib.optional stdenv.hostPlatform.isLinux util-linux;
 
   buildInputs = [
-    boost184
+    boost
     sqlite
     pcre
   ];
diff --git a/pkgs/development/libraries/boost/1.84.nix b/pkgs/development/libraries/boost/1.84.nix
deleted file mode 100644
index bfcfdfbfd7cf..000000000000
--- a/pkgs/development/libraries/boost/1.84.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ callPackage, fetchurl, ... } @ args:
-
-callPackage ./generic.nix (args // rec {
-  version = "1.84.0";
-
-  src = fetchurl {
-    urls = [
-      "mirror://sourceforge/boost/boost_${builtins.replaceStrings ["."] ["_"] version}.tar.bz2"
-      "https://boostorg.jfrog.io/artifactory/main/release/${version}/source/boost_${builtins.replaceStrings ["."] ["_"] version}.tar.bz2"
-    ];
-    # SHA256 from http://www.boost.org/users/history/version_1_84_0.html
-    sha256 = "cc4b893acf645c9d4b698e9a0f08ca8846aa5d6c68275c14c3e7949c24109454";
-  };
-})
diff --git a/pkgs/development/libraries/boost/1.85.nix b/pkgs/development/libraries/boost/1.85.nix
deleted file mode 100644
index a95789800e1b..000000000000
--- a/pkgs/development/libraries/boost/1.85.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ callPackage, fetchurl, ... } @ args:
-
-callPackage ./generic.nix (args // rec {
-  version = "1.85.0";
-
-  src = fetchurl {
-    urls = [
-      "mirror://sourceforge/boost/boost_${builtins.replaceStrings ["."] ["_"] version}.tar.bz2"
-      "https://boostorg.jfrog.io/artifactory/main/release/${version}/source/boost_${builtins.replaceStrings ["."] ["_"] version}.tar.bz2"
-    ];
-    # SHA256 from http://www.boost.org/users/history/version_1_85_0.html
-    sha256 = "7009fe1faa1697476bdc7027703a2badb84e849b7b0baad5086b087b971f8617";
-  };
-})
diff --git a/pkgs/development/libraries/boost/default.nix b/pkgs/development/libraries/boost/default.nix
index fed5dbe834c3..c1f041e41f29 100644
--- a/pkgs/development/libraries/boost/default.nix
+++ b/pkgs/development/libraries/boost/default.nix
@@ -24,7 +24,5 @@ in {
   boost181 = makeBoost ./1.81.nix;
   boost182 = makeBoost ./1.82.nix;
   boost183 = makeBoost ./1.83.nix;
-  boost184 = makeBoost ./1.84.nix;
-  boost185 = makeBoost ./1.85.nix;
   boost186 = makeBoost ./1.86.nix;
 }
diff --git a/pkgs/development/python-modules/graph-tool/default.nix b/pkgs/development/python-modules/graph-tool/default.nix
index ff0ab4f62787..eefa3ea7a5e0 100644
--- a/pkgs/development/python-modules/graph-tool/default.nix
+++ b/pkgs/development/python-modules/graph-tool/default.nix
@@ -5,7 +5,7 @@
   stdenv,
 
   autoreconfHook,
-  boost185,
+  boost,
   cairomm,
   cgal,
   expat,
@@ -26,8 +26,7 @@
 }:
 
 let
-  # graph-tool doesn't build against boost181 on Darwin
-  boost = boost185.override {
+  boost' = boost.override {
     enablePython = true;
     inherit python;
   };
@@ -58,7 +57,7 @@ buildPythonPackage rec {
 
   configureFlags = [
     "--with-python-module-path=$(out)/${python.sitePackages}"
-    "--with-boost-libdir=${boost}/lib"
+    "--with-boost-libdir=${boost'}/lib"
     "--with-cgal=${cgal}"
   ];
 
@@ -71,7 +70,7 @@ buildPythonPackage rec {
 
   # https://graph-tool.skewed.de/installation.html#manual-compilation
   dependencies = [
-    boost
+    boost'
     cairomm
     cgal
     expat
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index db4f50bf465e..d16cad84d4b6 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -156,6 +156,8 @@ mapAliases {
   blockbench-electron = blockbench; # Added 2024-03-16
   bloom = throw "'bloom' has been removed because it was unmaintained upstream."; # Added 2024-11-02
   bmap-tools = bmaptool; # Added 2024-08-05
+  boost184 = throw "Boost 1.84 has been removed as it is obsolete and no longer used by anything in Nixpkgs"; # Added 2024-11-24
+  boost185 = throw "Boost 1.85 has been removed as it is obsolete and no longer used by anything in Nixpkgs"; # Added 2024-11-24
   boost_process = throw "boost_process has been removed as it is included in regular boost"; # Added 2024-05-01
   bpb = throw "bpb has been removed as it is unmaintained and not compatible with recent Rust versions"; # Added 2024-04-30
   bpftool = throw "'bpftool' has been renamed to/replaced by 'bpftools'"; # Converted to throw 2024-10-17
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 373a3729fb00..9751d70b0aa5 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1513,10 +1513,6 @@ with pkgs;
     inherit (darwin) autoSignDarwinBinariesHook;
   };
 
-  saunafs = callPackage ../by-name/sa/saunafs/package.nix {
-    boost = boost185;
-  };
-
   vifm-full = vifm.override {
     mediaSupport = true;
     inherit lib udisks2 python3;
@@ -8855,8 +8851,6 @@ with pkgs;
     boost181
     boost182
     boost183
-    boost184
-    boost185
     boost186
   ;