diff --git a/nixos/modules/services/x11/xserver.nix b/nixos/modules/services/x11/xserver.nix
index e89ad9a5796..8858559d8f2 100644
--- a/nixos/modules/services/x11/xserver.nix
+++ b/nixos/modules/services/x11/xserver.nix
@@ -650,7 +650,7 @@ in
         xorg.xprop
         xorg.xauth
         pkgs.xterm
-        pkgs.xdg_utils
+        pkgs.xdg-utils
         xorg.xf86inputevdev.out # get evdev.4 man page
       ]
       ++ optional (elem "virtualbox" cfg.videoDrivers) xorg.xrefresh;
diff --git a/pkgs/applications/audio/bitwig-studio/bitwig-studio1.nix b/pkgs/applications/audio/bitwig-studio/bitwig-studio1.nix
index 97c27d4ad9a..fca3eaf223e 100644
--- a/pkgs/applications/audio/bitwig-studio/bitwig-studio1.nix
+++ b/pkgs/applications/audio/bitwig-studio/bitwig-studio1.nix
@@ -3,7 +3,7 @@
 , libbsd, libjack2, libpng, ffmpeg_3
 , libxkbcommon
 , makeWrapper, pixman, autoPatchelfHook
-, xdg_utils, zenity, zlib }:
+, xdg-utils, zenity, zlib }:
 
 stdenv.mkDerivation rec {
   pname = "bitwig-studio";
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   ];
 
   binPath = lib.makeBinPath [
-    xdg_utils zenity ffmpeg_3
+    xdg-utils zenity ffmpeg_3
   ];
 
   installPhase = ''
diff --git a/pkgs/applications/audio/bitwig-studio/bitwig-studio3.nix b/pkgs/applications/audio/bitwig-studio/bitwig-studio3.nix
index 31086b3674d..2a12632494b 100644
--- a/pkgs/applications/audio/bitwig-studio/bitwig-studio3.nix
+++ b/pkgs/applications/audio/bitwig-studio/bitwig-studio3.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, alsaLib, cairo, dpkg, freetype
 , gdk-pixbuf, glib, gtk3, lib, xorg
 , libglvnd, libjack2, ffmpeg_3
-, libxkbcommon, xdg_utils, zlib, pulseaudio
+, libxkbcommon, xdg-utils, zlib, pulseaudio
 , wrapGAppsHook, makeWrapper }:
 
 stdenv.mkDerivation rec {
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   ];
 
   binPath = lib.makeBinPath [
-    xdg_utils ffmpeg_3
+    xdg-utils ffmpeg_3
   ];
 
   ldLibraryPath = lib.strings.makeLibraryPath buildInputs;
diff --git a/pkgs/applications/audio/faust/faust2firefox.nix b/pkgs/applications/audio/faust/faust2firefox.nix
index b2cc6f46457..c718aa06806 100644
--- a/pkgs/applications/audio/faust/faust2firefox.nix
+++ b/pkgs/applications/audio/faust/faust2firefox.nix
@@ -1,5 +1,5 @@
 { faust
-, xdg_utils
+, xdg-utils
 }:
 
 # This just runs faust2svg, then attempts to open a browser using
@@ -9,6 +9,6 @@ faust.wrap {
 
   baseName = "faust2firefox";
 
-  runtimeInputs = [ xdg_utils ];
+  runtimeInputs = [ xdg-utils ];
 
 }
diff --git a/pkgs/applications/misc/avrdudess/default.nix b/pkgs/applications/misc/avrdudess/default.nix
index 696d69c701c..29469d9fff9 100644
--- a/pkgs/applications/misc/avrdudess/default.nix
+++ b/pkgs/applications/misc/avrdudess/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, runtimeShell, fetchurl, unzip, mono, avrdude, gtk2, xdg_utils }:
+{ lib, stdenv, runtimeShell, fetchurl, unzip, mono, avrdude, gtk2, xdg-utils }:
 
 stdenv.mkDerivation {
   name = "avrdudess-2.2.20140102";
@@ -23,7 +23,7 @@ stdenv.mkDerivation {
     export LD_LIBRARY_PATH="${lib.makeLibraryPath [gtk2 mono]}"
     # We need PATH from user env for xdg-open to find its tools, which
     # typically depend on the currently running desktop environment.
-    export PATH="${lib.makeBinPath [ avrdude xdg_utils ]}:\$PATH"
+    export PATH="${lib.makeBinPath [ avrdude xdg-utils ]}:\$PATH"
 
     # avrdudess must have its resource files in its current working directory
     cd $out/avrdudess && exec ${mono}/bin/mono "$out/avrdudess/avrdudess.exe" "\$@"
diff --git a/pkgs/applications/misc/calibre/default.nix b/pkgs/applications/misc/calibre/default.nix
index 47d2ee52f81..7917975f4f2 100644
--- a/pkgs/applications/misc/calibre/default.nix
+++ b/pkgs/applications/misc/calibre/default.nix
@@ -20,7 +20,7 @@
 , python3Packages
 , libusb1
 , libmtp
-, xdg_utils
+, xdg-utils
 , makeDesktopItem
 , removeReferencesTo
 }:
@@ -84,7 +84,7 @@ mkDerivation rec {
     poppler_utils
     qtbase
     sqlite
-    xdg_utils
+    xdg-utils
   ] ++ (
     with python3Packages; [
       apsw
diff --git a/pkgs/applications/misc/eureka-editor/default.nix b/pkgs/applications/misc/eureka-editor/default.nix
index 0b5922f8f69..2e70beb6173 100644
--- a/pkgs/applications/misc/eureka-editor/default.nix
+++ b/pkgs/applications/misc/eureka-editor/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchzip, fltk, zlib, xdg_utils, xorg, libjpeg, libGL }:
+{ lib, stdenv, fetchzip, fltk, zlib, xdg-utils, xorg, libjpeg, libGL }:
 
 stdenv.mkDerivation rec {
   pname = "eureka-editor";
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "0fpj13aq4wh3f7473cdc5jkf1c71jiiqmjc0ihqa0nm3hic1d4yv";
   };
 
-  buildInputs = [ fltk zlib xdg_utils libjpeg xorg.libXinerama libGL ];
+  buildInputs = [ fltk zlib xdg-utils libjpeg xorg.libXinerama libGL ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/applications/misc/far2l/default.nix b/pkgs/applications/misc/far2l/default.nix
index c3e9218b588..f95fb5ed6ec 100644
--- a/pkgs/applications/misc/far2l/default.nix
+++ b/pkgs/applications/misc/far2l/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch, makeWrapper, cmake, pkg-config, wxGTK30, glib, pcre, m4, bash,
-  xdg_utils, gvfs, zip, unzip, gzip, bzip2, gnutar, p7zip, xz, imagemagick, darwin }:
+  xdg-utils, gvfs, zip, unzip, gzip, bzip2, gnutar, p7zip, xz, imagemagick, darwin }:
 
 let
   newer-colorer-schemes = fetchFromGitHub {
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   '' + ''
     echo 'echo ${version}' > far2l/bootstrap/scripts/vbuild.sh
     substituteInPlace far2l/bootstrap/open.sh              \
-      --replace 'xdg-open'    '${xdg_utils}/bin/xdg-open'
+      --replace 'xdg-open'    '${xdg-utils}/bin/xdg-open'
     substituteInPlace far2l/vtcompletor.cpp                \
       --replace '"/bin/bash"' '"${bash}/bin/bash"'
     substituteInPlace multiarc/src/formats/zip/zip.cpp     \
diff --git a/pkgs/applications/misc/fff/default.nix b/pkgs/applications/misc/fff/default.nix
index 2b21c984f34..a3f791940cb 100644
--- a/pkgs/applications/misc/fff/default.nix
+++ b/pkgs/applications/misc/fff/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, makeWrapper, bashInteractive, xdg_utils, file, coreutils, w3m, xdotool }:
+{ lib, stdenv, fetchFromGitHub, makeWrapper, bashInteractive, xdg-utils, file, coreutils, w3m, xdotool }:
 
 stdenv.mkDerivation rec {
   pname = "fff";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "14ymdw6l6phnil0xf1frd5kgznaiwppcic0v4hb61s1zpf4wrshg";
   };
 
-  pathAdd = lib.makeSearchPath "bin" ([ xdg_utils file coreutils w3m xdotool ]);
+  pathAdd = lib.makeSearchPath "bin" ([ xdg-utils file coreutils w3m xdotool ]);
 
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [ bashInteractive ];
diff --git a/pkgs/applications/misc/lutris/fhsenv.nix b/pkgs/applications/misc/lutris/fhsenv.nix
index d7eabae0e8e..dbb6301d286 100644
--- a/pkgs/applications/misc/lutris/fhsenv.nix
+++ b/pkgs/applications/misc/lutris/fhsenv.nix
@@ -97,7 +97,7 @@ in buildFHSUserEnv {
     libcap libtiff libva libgphoto2 libxslt libsndfile giflib zlib glib
     alsaLib zziplib bash dbus keyutils zip cabextract freetype unzip coreutils
     readline gcc SDL SDL2 curl graphite2 gtk2 gtk3 udev ncurses wayland libglvnd
-    vulkan-loader xdg_utils sqlite gnutls p11-kit libbsd harfbuzz
+    vulkan-loader xdg-utils sqlite gnutls p11-kit libbsd harfbuzz
 
     # PCSX2 // TODO: "libgobject-2.0.so.0: wrong ELF class: ELFCLASS64"
 
diff --git a/pkgs/applications/misc/qdirstat/default.nix b/pkgs/applications/misc/qdirstat/default.nix
index 7830f2035d9..29cd7967e13 100644
--- a/pkgs/applications/misc/qdirstat/default.nix
+++ b/pkgs/applications/misc/qdirstat/default.nix
@@ -1,5 +1,5 @@
 { lib, fetchFromGitHub, qmake
-, coreutils, xdg_utils, bash
+, coreutils, xdg-utils, bash
 , makeWrapper, perlPackages, mkDerivation }:
 
 let
@@ -28,7 +28,7 @@ mkDerivation {
     for i in src/SysUtil.cpp src/FileSizeStatsWindow.cpp
     do
       substituteInPlace $i \
-        --replace /usr/bin/xdg-open ${xdg_utils}/bin/xdg-open
+        --replace /usr/bin/xdg-open ${xdg-utils}/bin/xdg-open
     done
     for i in src/Cleanup.cpp src/cleanup-config-page.ui
     do
diff --git a/pkgs/applications/networking/browsers/brave/default.nix b/pkgs/applications/networking/browsers/brave/default.nix
index e5872c66104..6e772c7931d 100644
--- a/pkgs/applications/networking/browsers/brave/default.nix
+++ b/pkgs/applications/networking/browsers/brave/default.nix
@@ -38,7 +38,7 @@
 , udev
 , xorg
 , zlib
-, xdg_utils
+, xdg-utils
 , wrapGAppsHook
 }:
 
@@ -79,7 +79,7 @@ rpath = lib.makeLibraryPath [
   nss
   pango
   udev
-  xdg_utils
+  xdg-utils
   xorg.libxcb
   zlib
 ];
@@ -144,8 +144,8 @@ stdenv.mkDerivation rec {
       done
 
       # Replace xdg-settings and xdg-mime
-      ln -sf ${xdg_utils}/bin/xdg-settings $out/opt/brave.com/brave/xdg-settings
-      ln -sf ${xdg_utils}/bin/xdg-mime $out/opt/brave.com/brave/xdg-mime
+      ln -sf ${xdg-utils}/bin/xdg-settings $out/opt/brave.com/brave/xdg-settings
+      ln -sf ${xdg-utils}/bin/xdg-mime $out/opt/brave.com/brave/xdg-mime
   '';
 
   installCheckPhase = ''
diff --git a/pkgs/applications/networking/browsers/chromium/common.nix b/pkgs/applications/networking/browsers/chromium/common.nix
index 8bb049afc66..d25dd2a7830 100644
--- a/pkgs/applications/networking/browsers/chromium/common.nix
+++ b/pkgs/applications/networking/browsers/chromium/common.nix
@@ -4,7 +4,7 @@
 , gnutar, bzip2, flac, speex, libopus
 , libevent, expat, libjpeg, snappy
 , libpng, libcap
-, xdg_utils, yasm, nasm, minizip, libwebp
+, xdg-utils, yasm, nasm, minizip, libwebp
 , libusb1, pciutils, nss, re2
 
 , python2Packages, perl, pkg-config
@@ -89,7 +89,7 @@ let
     bzip2 flac speex opusWithCustomModes
     libevent expat libjpeg snappy
     libpng libcap
-    xdg_utils minizip libwebp
+    xdg-utils minizip libwebp
     libusb1 re2
     ffmpeg libxslt libxml2
     nasm
@@ -196,7 +196,7 @@ let
           '/usr/share/locale/' \
           '${glibc}/share/locale/'
 
-      sed -i -e 's@"\(#!\)\?.*xdg-@"\1${xdg_utils}/bin/xdg-@' \
+      sed -i -e 's@"\(#!\)\?.*xdg-@"\1${xdg-utils}/bin/xdg-@' \
         chrome/browser/shell_integration_linux.cc
 
       sed -i -e '/lib_loader.*Load/s!"\(libudev\.so\)!"${lib.getLib systemd}/lib/\1!' \
diff --git a/pkgs/applications/networking/browsers/chromium/default.nix b/pkgs/applications/networking/browsers/chromium/default.nix
index f8eee605b8e..a9d975f4115 100644
--- a/pkgs/applications/networking/browsers/chromium/default.nix
+++ b/pkgs/applications/networking/browsers/chromium/default.nix
@@ -1,5 +1,5 @@
 { newScope, config, stdenv, fetchurl, makeWrapper
-, llvmPackages_11, ed, gnugrep, coreutils, xdg_utils
+, llvmPackages_11, ed, gnugrep, coreutils, xdg-utils
 , glib, gtk3, gnome3, gsettings-desktop-schemas, gn, fetchgit
 , libva ? null
 , pipewire_0_2
@@ -190,7 +190,7 @@ in stdenv.mkDerivation {
     export XDG_DATA_DIRS=$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH\''${XDG_DATA_DIRS:+:}\$XDG_DATA_DIRS
 
     # Mainly for xdg-open but also other xdg-* tools:
-    export PATH="${xdg_utils}/bin\''${PATH:+:}\$PATH"
+    export PATH="${xdg-utils}/bin\''${PATH:+:}\$PATH"
 
     .
     w
diff --git a/pkgs/applications/networking/browsers/firefox/wrapper.nix b/pkgs/applications/networking/browsers/firefox/wrapper.nix
index e3e8ba610d0..31cfe0247ee 100644
--- a/pkgs/applications/networking/browsers/firefox/wrapper.nix
+++ b/pkgs/applications/networking/browsers/firefox/wrapper.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, makeDesktopItem, makeWrapper, lndir, config
-, replace, fetchurl, zip, unzip, jq, xdg_utils, writeText
+, replace, fetchurl, zip, unzip, jq, xdg-utils, writeText
 
 ## various stuff that can be plugged in
 , flashplayer, hal-flash
@@ -265,7 +265,7 @@ let
             --suffix LD_LIBRARY_PATH ':' "$libs" \
             --suffix-each GTK_PATH ':' "$gtk_modules" \
             --suffix-each LD_PRELOAD ':' "$(cat $(filterExisting $(addSuffix /extra-ld-preload $plugins)))" \
-            --prefix PATH ':' "${xdg_utils}/bin" \
+            --prefix PATH ':' "${xdg-utils}/bin" \
             --prefix-contents PATH ':' "$(filterExisting $(addSuffix /extra-bin-path $plugins))" \
             --suffix PATH ':' "$out${browser.execdir or "/bin"}" \
             --set MOZ_APP_LAUNCHER "${browserName}${nameSuffix}" \
diff --git a/pkgs/applications/networking/browsers/google-chrome/default.nix b/pkgs/applications/networking/browsers/google-chrome/default.nix
index c32652c8bfc..c5e5aff77e0 100644
--- a/pkgs/applications/networking/browsers/google-chrome/default.nix
+++ b/pkgs/applications/networking/browsers/google-chrome/default.nix
@@ -22,7 +22,7 @@
 
 # Additional dependencies according to other distros.
 ## Ubuntu
-, liberation_ttf, curl, util-linux, xdg_utils, wget
+, liberation_ttf, curl, util-linux, xdg-utils, wget
 ## Arch Linux.
 , flac, harfbuzz, icu, libpng, libopus, snappy, speechd
 ## Gentoo
@@ -57,7 +57,7 @@ let
     dbus gdk-pixbuf gcc-unwrapped.lib
     systemd
     libexif
-    liberation_ttf curl util-linux xdg_utils wget
+    liberation_ttf curl util-linux xdg-utils wget
     flac harfbuzz icu libpng opusWithCustomModes snappy speechd
     bzip2 libcap at-spi2-atk at-spi2-core
     kerberos libdrm mesa coreutils
diff --git a/pkgs/applications/networking/ftp/filezilla/default.nix b/pkgs/applications/networking/ftp/filezilla/default.nix
index 4c47c316753..877cdec4ca8 100644
--- a/pkgs/applications/networking/ftp/filezilla/default.nix
+++ b/pkgs/applications/networking/ftp/filezilla/default.nix
@@ -12,7 +12,7 @@
 , sqlite
 , tinyxml
 , wxGTK30-gtk3
-, xdg_utils
+, xdg-utils
 }:
 
 stdenv.mkDerivation rec {
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
     tinyxml
     wxGTK30-gtk3
     wxGTK30-gtk3.gtk
-    xdg_utils
+    xdg-utils
   ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/applications/networking/instant-messengers/franz/generic.nix b/pkgs/applications/networking/instant-messengers/franz/generic.nix
index 96865374bed..7bbad798233 100644
--- a/pkgs/applications/networking/instant-messengers/franz/generic.nix
+++ b/pkgs/applications/networking/instant-messengers/franz/generic.nix
@@ -22,7 +22,7 @@
 , expat
 , udev
 , libnotify
-, xdg_utils
+, xdg-utils
 }:
 
 # Helper function for building a derivation for Franz and forks.
@@ -85,7 +85,7 @@ stdenv.mkDerivation rec {
   postFixup = ''
     wrapProgram $out/opt/${name}/${pname} \
       --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath runtimeDependencies}" \
-      --prefix PATH : ${xdg_utils}/bin \
+      --prefix PATH : ${xdg-utils}/bin \
       "''${gappsWrapperArgs[@]}"
   '';
 }
diff --git a/pkgs/applications/networking/instant-messengers/hipchat/default.nix b/pkgs/applications/networking/instant-messengers/hipchat/default.nix
index 323a2521b0f..f3736bfc64f 100644
--- a/pkgs/applications/networking/instant-messengers/hipchat/default.nix
+++ b/pkgs/applications/networking/instant-messengers/hipchat/default.nix
@@ -1,12 +1,12 @@
 { lib, stdenv, fetchurl, xorg, freetype, fontconfig, openssl, glib, nss, nspr, expat
 , alsaLib, dbus, zlib, libxml2, libxslt, makeWrapper, xkeyboard_config, systemd
-, libGL, xcbutilkeysyms, xdg_utils, libtool }:
+, libGL, xcbutilkeysyms, xdg-utils, libtool }:
 
 let
   version = "4.30.5.1682";
 
   rpath = lib.makeLibraryPath [
-    xdg_utils
+    xdg-utils
     xorg.libXext
     xorg.libSM
     xorg.libICE
diff --git a/pkgs/applications/networking/instant-messengers/slack/default.nix b/pkgs/applications/networking/instant-messengers/slack/default.nix
index 54c652aab6a..44642ab8a93 100644
--- a/pkgs/applications/networking/instant-messengers/slack/default.nix
+++ b/pkgs/applications/networking/instant-messengers/slack/default.nix
@@ -31,7 +31,7 @@
 , nss
 , pango
 , systemd
-, xdg_utils
+, xdg-utils
 , xorg
 }:
 
@@ -151,7 +151,7 @@ let
       rm $out/bin/slack
       makeWrapper $out/lib/slack/slack $out/bin/slack \
         --prefix XDG_DATA_DIRS : $GSETTINGS_SCHEMAS_PATH \
-        --prefix PATH : ${xdg_utils}/bin
+        --prefix PATH : ${xdg-utils}/bin
 
       # Fix the desktop link
       substituteInPlace $out/share/applications/slack.desktop \
diff --git a/pkgs/applications/networking/instant-messengers/teams/default.nix b/pkgs/applications/networking/instant-messengers/teams/default.nix
index af3235bbdc7..1625878a2d0 100644
--- a/pkgs/applications/networking/instant-messengers/teams/default.nix
+++ b/pkgs/applications/networking/instant-messengers/teams/default.nix
@@ -10,7 +10,7 @@
 , at-spi2-atk
 , coreutils
 , gawk
-, xdg_utils
+, xdg-utils
 , systemd }:
 
 stdenv.mkDerivation rec {
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
   ];
 
   preFixup = ''
-    gappsWrapperArgs+=(--prefix PATH : "${coreutils}/bin:${gawk}/bin:${xdg_utils}/bin")
+    gappsWrapperArgs+=(--prefix PATH : "${coreutils}/bin:${gawk}/bin:${xdg-utils}/bin")
   '';
 
   installPhase = ''
diff --git a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
index 190e0515896..676902d68ef 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/kotatogram-desktop/default.nix
@@ -1,5 +1,5 @@
 { mkDerivation, lib, fetchFromGitHub, pkg-config, python3, cmake, ninja
-, qtbase, qtimageformats, libdbusmenu, hunspell, xdg_utils, ffmpeg_3, openalSoft
+, qtbase, qtimageformats, libdbusmenu, hunspell, xdg-utils, ffmpeg_3, openalSoft
 , lzma, lz4, xxHash, zlib, minizip, openssl, libtgvoip, microsoft_gsl, tl-expected
 , range-v3
 }:
@@ -26,7 +26,7 @@ mkDerivation rec {
   ];
 
   qtWrapperArgs = [
-    "--prefix PATH : ${xdg_utils}/bin"
+    "--prefix PATH : ${xdg-utils}/bin"
   ];
 
   cmakeFlags = [
diff --git a/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix b/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
index 7a3638d94f3..693a01f5d89 100644
--- a/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/telegram/tdesktop/default.nix
@@ -5,7 +5,7 @@
 , tl-expected, hunspell
 # TODO: Shouldn't be required:
 , pcre, xorg, util-linux, libselinux, libsepol, epoxy, at-spi2-core, libXtst
-, xdg_utils
+, xdg-utils
 }:
 
 with lib;
@@ -83,7 +83,7 @@ in mkDerivation rec {
     wrapProgram $out/bin/telegram-desktop \
       "''${gappsWrapperArgs[@]}" \
       "''${qtWrapperArgs[@]}" \
-      --prefix PATH : ${xdg_utils}/bin \
+      --prefix PATH : ${xdg-utils}/bin \
       --set XDG_RUNTIME_DIR "XDG-RUNTIME-DIR"
     sed -i $out/bin/telegram-desktop \
       -e "s,'XDG-RUNTIME-DIR',\"\''${XDG_RUNTIME_DIR:-/run/user/\$(id --user)}\","
diff --git a/pkgs/applications/networking/instant-messengers/wavebox/default.nix b/pkgs/applications/networking/instant-messengers/wavebox/default.nix
index f90269fc83e..ba0f867b2aa 100644
--- a/pkgs/applications/networking/instant-messengers/wavebox/default.nix
+++ b/pkgs/applications/networking/instant-messengers/wavebox/default.nix
@@ -1,5 +1,5 @@
 { alsaLib, autoPatchelfHook, fetchurl, gtk3, libnotify
-, makeDesktopItem, makeWrapper, nss, lib, stdenv, udev, xdg_utils
+, makeDesktopItem, makeWrapper, nss, lib, stdenv, udev, xdg-utils
 , xorg
 }:
 
@@ -54,7 +54,7 @@ in stdenv.mkDerivation {
 
   postFixup = ''
     makeWrapper $out/opt/wavebox/Wavebox $out/bin/wavebox \
-      --prefix PATH : ${xdg_utils}/bin
+      --prefix PATH : ${xdg-utils}/bin
   '';
 
   meta = with lib; {
diff --git a/pkgs/applications/networking/remote/teamviewer/default.nix b/pkgs/applications/networking/remote/teamviewer/default.nix
index c556ce35b2d..30bd5346ace 100644
--- a/pkgs/applications/networking/remote/teamviewer/default.nix
+++ b/pkgs/applications/networking/remote/teamviewer/default.nix
@@ -1,4 +1,4 @@
-{ mkDerivation, lib, fetchurl, autoPatchelfHook, makeWrapper, xdg_utils, dbus
+{ mkDerivation, lib, fetchurl, autoPatchelfHook, makeWrapper, xdg-utils, dbus
 , qtbase, qtwebkit, qtx11extras, qtquickcontrols, glibc
 , libXrandr, libX11, libXext, libXdamage, libXtst, libSM, libXfixes
 , wrapQtAppsHook
@@ -36,7 +36,7 @@ mkDerivation rec {
     ln -s $out/share/teamviewer/tv_bin/desktop/com.teamviewer.*.desktop $out/share/applications
     ln -s /var/lib/teamviewer $out/share/teamviewer/config
     ln -s /var/log/teamviewer $out/share/teamviewer/logfiles
-    ln -s ${xdg_utils}/bin $out/share/teamviewer/tv_bin/xdg-utils
+    ln -s ${xdg-utils}/bin $out/share/teamviewer/tv_bin/xdg-utils
 
     for i in 16 20 24 32 48 256; do
       size=$i"x"$i
diff --git a/pkgs/applications/office/mytetra/default.nix b/pkgs/applications/office/mytetra/default.nix
index 384d7fadaf0..3e2383fb356 100644
--- a/pkgs/applications/office/mytetra/default.nix
+++ b/pkgs/applications/office/mytetra/default.nix
@@ -1,4 +1,4 @@
-{ lib, mkDerivation, fetchurl, qmake, qtsvg, makeWrapper, xdg_utils }:
+{ lib, mkDerivation, fetchurl, qmake, qtsvg, makeWrapper, xdg-utils }:
 
 let
   version = "1.44.55";
@@ -26,7 +26,7 @@ in mkDerivation {
 
   postFixup = ''
     wrapProgram $out/bin/mytetra \
-      --prefix PATH : ${xdg_utils}/bin
+      --prefix PATH : ${xdg-utils}/bin
   '';
 
   meta = with lib; {
diff --git a/pkgs/applications/terminal-emulators/alacritty/default.nix b/pkgs/applications/terminal-emulators/alacritty/default.nix
index 6049b0e45e6..71986e6ec6f 100644
--- a/pkgs/applications/terminal-emulators/alacritty/default.nix
+++ b/pkgs/applications/terminal-emulators/alacritty/default.nix
@@ -23,7 +23,7 @@
 , libxcb
 , libxkbcommon
 , wayland
-, xdg_utils
+, xdg-utils
 
   # Darwin Frameworks
 , AppKit
@@ -87,7 +87,7 @@ rustPlatform.buildRustPackage rec {
 
   postPatch = ''
     substituteInPlace alacritty/src/config/mouse.rs \
-      --replace xdg-open ${xdg_utils}/bin/xdg-open
+      --replace xdg-open ${xdg-utils}/bin/xdg-open
   '';
 
   installPhase = ''
diff --git a/pkgs/applications/terminal-emulators/wayst/default.nix b/pkgs/applications/terminal-emulators/wayst/default.nix
index 528e3f50ea0..dc79e48b24f 100644
--- a/pkgs/applications/terminal-emulators/wayst/default.nix
+++ b/pkgs/applications/terminal-emulators/wayst/default.nix
@@ -13,7 +13,7 @@
 , wayland
 
 , libnotify
-, xdg_utils
+, xdg-utils
 , makeDesktopItem
 }:
 
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace src/settings.c \
-      --replace xdg-open ${xdg_utils}/bin/xdg-open
+      --replace xdg-open ${xdg-utils}/bin/xdg-open
     substituteInPlace src/main.c \
       --replace notify-send ${libnotify}/bin/notify-send
   '';
diff --git a/pkgs/applications/version-management/git-and-tools/git-open/default.nix b/pkgs/applications/version-management/git-and-tools/git-open/default.nix
index 3ba53e837fa..5e5bba3df72 100644
--- a/pkgs/applications/version-management/git-and-tools/git-open/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/git-open/default.nix
@@ -1,4 +1,4 @@
-{lib, stdenv, git, xdg_utils, gnugrep, fetchFromGitHub, makeWrapper}:
+{lib, stdenv, git, xdg-utils, gnugrep, fetchFromGitHub, makeWrapper}:
 
 stdenv.mkDerivation rec {
   pname = "git-open";
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     mkdir -p $out/bin
     cp git-open $out/bin
     wrapProgram $out/bin/git-open \
-      --prefix PATH : "${lib.makeBinPath [ git xdg_utils gnugrep ]}"
+      --prefix PATH : "${lib.makeBinPath [ git xdg-utils gnugrep ]}"
   '';
 
   meta = with lib; {
diff --git a/pkgs/applications/version-management/git-and-tools/lab/default.nix b/pkgs/applications/version-management/git-and-tools/lab/default.nix
index 284cbe75839..41c4e653a63 100644
--- a/pkgs/applications/version-management/git-and-tools/lab/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/lab/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildGoModule, fetchFromGitHub, makeWrapper, xdg_utils, installShellFiles, git }:
+{ lib, buildGoModule, fetchFromGitHub, makeWrapper, xdg-utils, installShellFiles, git }:
 
 buildGoModule rec {
   pname = "lab";
@@ -22,7 +22,7 @@ buildGoModule rec {
   buildFlagsArray = [ "-ldflags=-s -w -X main.version=${version}" ];
 
   postInstall = ''
-    wrapProgram $out/bin/lab --prefix PATH ":" "${lib.makeBinPath [ git xdg_utils ]}";
+    wrapProgram $out/bin/lab --prefix PATH ":" "${lib.makeBinPath [ git xdg-utils ]}";
     for shell in bash fish zsh; do
       $out/bin/lab completion $shell > lab.$shell
       installShellCompletion lab.$shell
diff --git a/pkgs/applications/version-management/rabbitvcs/default.nix b/pkgs/applications/version-management/rabbitvcs/default.nix
index 0384f9723d5..e274f0b0335 100644
--- a/pkgs/applications/version-management/rabbitvcs/default.nix
+++ b/pkgs/applications/version-management/rabbitvcs/default.nix
@@ -1,4 +1,4 @@
-{ fetchFromGitHub, lib, python3Packages, meld, subversion, gvfs, xdg_utils, gtk3 }:
+{ fetchFromGitHub, lib, python3Packages, meld, subversion, gvfs, xdg-utils, gtk3 }:
 
 python3Packages.buildPythonApplication rec {
   pname = "rabbitvcs";
@@ -13,7 +13,7 @@ python3Packages.buildPythonApplication rec {
   };
 
   buildInputs = [ gtk3 ];
-  pythonPath = with python3Packages; [ configobj pygobject3 pysvn dulwich tkinter gvfs xdg_utils ];
+  pythonPath = with python3Packages; [ configobj pygobject3 pysvn dulwich tkinter gvfs xdg-utils ];
 
   prePatch = ''
       sed -ie 's|if sys\.argv\[1\] == "install":|if False:|' ./setup.py
diff --git a/pkgs/applications/version-management/sparkleshare/default.nix b/pkgs/applications/version-management/sparkleshare/default.nix
index a7d1f86652c..da6bb386535 100644
--- a/pkgs/applications/version-management/sparkleshare/default.nix
+++ b/pkgs/applications/version-management/sparkleshare/default.nix
@@ -19,7 +19,7 @@
   stdenv,
   symlinkJoin,
   webkit2-sharp,
-  xdg_utils,
+  xdg-utils,
 }:
 
 stdenv.mkDerivation rec {
@@ -66,7 +66,7 @@ stdenv.mkDerivation rec {
             mono
             openssh
             openssl
-            xdg_utils
+            xdg-utils
           ];
         }}/bin \
         --set MONO_GAC_PREFIX ${lib.concatStringsSep ":" [
diff --git a/pkgs/applications/video/manim/default.nix b/pkgs/applications/video/manim/default.nix
index 667b2bb2b88..f2d33506ffc 100644
--- a/pkgs/applications/video/manim/default.nix
+++ b/pkgs/applications/video/manim/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonApplication, fetchFromGitHub, pythonOlder, file, fetchpatch
-, cairo, ffmpeg_3, sox, xdg_utils, texlive
+, cairo, ffmpeg_3, sox, xdg-utils, texlive
 , colour, numpy, pillow, progressbar, scipy, tqdm, opencv , pycairo, pydub
 , pbr, fetchPypi
 }:
@@ -28,14 +28,14 @@ buildPythonApplication rec {
     pycairo
     pydub
 
-    cairo sox ffmpeg_3 xdg_utils
+    cairo sox ffmpeg_3 xdg-utils
   ];
 
   # Test with texlive to see whether it works but don't propagate
   # because it's huge and optional
   # TODO: Use smaller TexLive distribution
   #       Doesn't need everything but it's hard to figure out what it needs
-  checkInputs = [ cairo sox ffmpeg_3 xdg_utils texlive.combined.scheme-full ];
+  checkInputs = [ cairo sox ffmpeg_3 xdg-utils texlive.combined.scheme-full ];
 
   # Simple test and complex test with LaTeX
   checkPhase = ''
diff --git a/pkgs/applications/video/mkvtoolnix/default.nix b/pkgs/applications/video/mkvtoolnix/default.nix
index 5735771b5d3..8ac7af3b216 100644
--- a/pkgs/applications/video/mkvtoolnix/default.nix
+++ b/pkgs/applications/video/mkvtoolnix/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchFromGitLab, pkg-config, autoconf, automake, libiconv, drake
-, ruby, docbook_xsl, file, xdg_utils, gettext, expat, boost, libebml, zlib
+, ruby, docbook_xsl, file, xdg-utils, gettext, expat, boost, libebml, zlib
 , fmt, libmatroska, libogg, libvorbis, flac, libxslt, cmark, pcre2
 , withGUI ? true
   , qtbase ? null
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
-    expat file xdg_utils boost libebml zlib fmt
+    expat file xdg-utils boost libebml zlib fmt
     libmatroska libogg libvorbis flac cmark pcre2
   ] ++ optional  stdenv.isDarwin libiconv
     ++ optionals withGUI [ qtbase qtmultimedia wrapQtAppsHook ];
diff --git a/pkgs/applications/video/subtitleeditor/default.nix b/pkgs/applications/video/subtitleeditor/default.nix
index 3dfd9d4b09b..cc3d518ff88 100644
--- a/pkgs/applications/video/subtitleeditor/default.nix
+++ b/pkgs/applications/video/subtitleeditor/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, intltool, file,
   desktop-file-utils, enchant, gtk3, gtkmm3, gst_all_1, hicolor-icon-theme,
-  libsigcxx, libxmlxx, xdg_utils, isocodes, wrapGAppsHook
+  libsigcxx, libxmlxx, xdg-utils, isocodes, wrapGAppsHook
 }:
 
 let
@@ -41,7 +41,7 @@ stdenv.mkDerivation {
     hicolor-icon-theme
     libsigcxx
     libxmlxx
-    xdg_utils
+    xdg-utils
     isocodes
   ];
 
diff --git a/pkgs/build-support/appimage/default.nix b/pkgs/build-support/appimage/default.nix
index 1613e9dea24..6824b8215e5 100644
--- a/pkgs/build-support/appimage/default.nix
+++ b/pkgs/build-support/appimage/default.nix
@@ -66,7 +66,7 @@ rec {
       xorg.xrandr
       which
       perl
-      xdg_utils
+      xdg-utils
       iana-etc
       krb5
     ];
diff --git a/pkgs/data/documentation/anarchism/default.nix b/pkgs/data/documentation/anarchism/default.nix
index 8f95a371ae2..d0cda3da544 100644
--- a/pkgs/data/documentation/anarchism/default.nix
+++ b/pkgs/data/documentation/anarchism/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitLab, xdg_utils }:
+{ lib, stdenv, fetchFromGitLab, xdg-utils }:
 
 stdenv.mkDerivation rec {
   pname = "anarchism";
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace debian/anarchism.desktop \
-      --replace "/usr/bin/xdg-open" "${xdg_utils}/bin/xdg-open"
+      --replace "/usr/bin/xdg-open" "${xdg-utils}/bin/xdg-open"
     substituteInPlace debian/anarchism.desktop \
       --replace "file:///usr" "file://$out"
   '';
diff --git a/pkgs/desktops/xfce/applications/catfish/default.nix b/pkgs/desktops/xfce/applications/catfish/default.nix
index e47f1dea3f6..e76ffa7204a 100644
--- a/pkgs/desktops/xfce/applications/catfish/default.nix
+++ b/pkgs/desktops/xfce/applications/catfish/default.nix
@@ -1,5 +1,5 @@
 { lib, fetchurl, file, which, intltool, gobject-introspection,
-  findutils, xdg_utils, dconf, gtk3, python3Packages,
+  findutils, xdg-utils, dconf, gtk3, python3Packages,
   wrapGAppsHook
 }:
 
@@ -34,7 +34,7 @@ python3Packages.buildPythonApplication rec {
     python3Packages.dbus-python
     python3Packages.pygobject3
     python3Packages.pexpect
-    xdg_utils
+    xdg-utils
     findutils
   ];
 
diff --git a/pkgs/development/mobile/genymotion/default.nix b/pkgs/development/mobile/genymotion/default.nix
index b4431506515..5602f598e9d 100644
--- a/pkgs/development/mobile/genymotion/default.nix
+++ b/pkgs/development/mobile/genymotion/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchurl, makeWrapper, which, zlib, libGL, glib, xorg, libxkbcommon
-, xdg_utils
+, xdg-utils
 # For glewinfo
 , libXmu, libXi, libXext }:
 
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
     sha256 = "0lvfdlpmmsyq2i9gs4mf6a8fxkfimdr4rhyihqnfhjij3fzxz4lk";
   };
 
-  buildInputs = [ makeWrapper which xdg_utils ];
+  buildInputs = [ makeWrapper which xdg-utils ];
 
   unpackPhase = ''
     mkdir -p phony-home $out/share/applications
diff --git a/pkgs/development/python-modules/papis/default.nix b/pkgs/development/python-modules/papis/default.nix
index d5b1df57d04..b05a525d91a 100644
--- a/pkgs/development/python-modules/papis/default.nix
+++ b/pkgs/development/python-modules/papis/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, xdg_utils
+{ lib, buildPythonPackage, fetchFromGitHub, xdg-utils
 , requests, filetype, pyparsing, configparser, arxiv2bib
 , pyyaml, chardet, beautifulsoup4, colorama, bibtexparser
 , click, python-slugify, habanero, isbnlib, typing-extensions
@@ -45,7 +45,7 @@ buildPythonPackage rec {
   checkInputs = ([
     pytest pytestcov
   ]) ++ [
-    xdg_utils
+    xdg-utils
   ];
 
   # most of the downloader tests and 4 other tests require a network connection
diff --git a/pkgs/games/steam/fhsenv.nix b/pkgs/games/steam/fhsenv.nix
index 4fa8960726b..57326667cb0 100644
--- a/pkgs/games/steam/fhsenv.nix
+++ b/pkgs/games/steam/fhsenv.nix
@@ -29,7 +29,7 @@ let
       # Needed by gdialog, including in the steam-runtime
       perl
       # Open URLs
-      xdg_utils
+      xdg-utils
       iana-etc
       # Steam Play / Proton
       python3
diff --git a/pkgs/misc/emulators/nestopia/default.nix b/pkgs/misc/emulators/nestopia/default.nix
index 956161209fc..d1b18f12a84 100644
--- a/pkgs/misc/emulators/nestopia/default.nix
+++ b/pkgs/misc/emulators/nestopia/default.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchFromGitHub, pkg-config, SDL2, alsaLib, gtk3
-, makeWrapper, libGLU, libGL, libarchive, libao, unzip, xdg_utils
+, makeWrapper, libGLU, libGL, libarchive, libao, unzip, xdg-utils
 , epoxy, gdk-pixbuf, gnome3, wrapGAppsHook
 }:
 
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     libarchive
     libao
     unzip
-    xdg_utils
+    xdg-utils
     gnome3.adwaita-icon-theme
   ];
 
diff --git a/pkgs/tools/audio/mpris-scrobbler/default.nix b/pkgs/tools/audio/mpris-scrobbler/default.nix
index 911dbf75202..07248213213 100644
--- a/pkgs/tools/audio/mpris-scrobbler/default.nix
+++ b/pkgs/tools/audio/mpris-scrobbler/default.nix
@@ -10,7 +10,7 @@
 , pkg-config
 , scdoc
 , json_c
-, xdg_utils
+, xdg-utils
 }:
 
 stdenv.mkDerivation rec {
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace src/signon.c \
-      --replace "/usr/bin/xdg-open" "${xdg_utils}/bin/xdg-open"
+      --replace "/usr/bin/xdg-open" "${xdg-utils}/bin/xdg-open"
   '';
 
   nativeBuildInputs = [
diff --git a/pkgs/tools/bluetooth/blueman/default.nix b/pkgs/tools/bluetooth/blueman/default.nix
index da1c4bfa969..69eeb3db711 100644
--- a/pkgs/tools/bluetooth/blueman/default.nix
+++ b/pkgs/tools/bluetooth/blueman/default.nix
@@ -1,11 +1,11 @@
 { config, stdenv, lib, fetchurl, intltool, pkg-config, python3Packages, bluez, gtk3
-, obex_data_server, xdg_utils, dnsmasq, dhcp, libappindicator, iproute
+, obex_data_server, xdg-utils, dnsmasq, dhcp, libappindicator, iproute
 , gnome3, librsvg, wrapGAppsHook, gobject-introspection, autoreconfHook
 , networkmanager, withPulseAudio ? config.pulseaudio or stdenv.isLinux, libpulseaudio, fetchpatch }:
 
 let
   pythonPackages = python3Packages;
-  binPath = lib.makeBinPath [ xdg_utils dnsmasq dhcp iproute ];
+  binPath = lib.makeBinPath [ xdg-utils dnsmasq dhcp iproute ];
 
 in stdenv.mkDerivation rec {
   pname = "blueman";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 7f69d035573..2eae6eaf202 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -25854,7 +25854,7 @@ in
 
   xdg-user-dirs = callPackage ../tools/X11/xdg-user-dirs { };
 
-  xdg_utils = callPackage ../tools/X11/xdg-utils {
+  xdg-utils = callPackage ../tools/X11/xdg-utils {
     w3m = w3m-batch;
   };