diff --git a/pkgs/applications/video/mplayer/default.nix b/pkgs/applications/video/mplayer/default.nix
index 02f57c17c77b..b087115ccf6d 100644
--- a/pkgs/applications/video/mplayer/default.nix
+++ b/pkgs/applications/video/mplayer/default.nix
@@ -23,7 +23,7 @@
   xineramaSupport ? true,
   libxinerama,
   xvSupport ? true,
-  libXv,
+  libxv,
   alsaSupport ? stdenv.hostPlatform.isLinux,
   alsa-lib,
   screenSaverSupport ? true,
@@ -152,7 +152,7 @@ stdenv.mkDerivation {
     libGL
   ]
   ++ lib.optional alsaSupport alsa-lib
-  ++ lib.optional xvSupport libXv
+  ++ lib.optional xvSupport libxv
   ++ lib.optional theoraSupport libtheora
   ++ lib.optional cacaSupport libcaca
   ++ lib.optional xineramaSupport libxinerama
diff --git a/pkgs/applications/video/mythtv/default.nix b/pkgs/applications/video/mythtv/default.nix
index 34bdd488251b..eb1b2f232bbd 100644
--- a/pkgs/applications/video/mythtv/default.nix
+++ b/pkgs/applications/video/mythtv/default.nix
@@ -20,7 +20,7 @@
   libbluray,
   lzo,
   libx11,
-  libXv,
+  libxv,
   libxrandr,
   libxvmc,
   libxinerama,
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     libpulseaudio
     fftwSinglePrec
     libx11
-    libXv
+    libxv
     libxrandr
     libxvmc
     libxmu
diff --git a/pkgs/by-name/ar/ares/package.nix b/pkgs/by-name/ar/ares/package.nix
index 15141e58b63e..d4f8f2c97015 100644
--- a/pkgs/by-name/ar/ares/package.nix
+++ b/pkgs/by-name/ar/ares/package.nix
@@ -9,7 +9,7 @@
   libGL,
   libGLU,
   libx11,
-  libXv,
+  libxv,
   libao,
   libpulseaudio,
   libretro-shaders-slang,
@@ -63,7 +63,7 @@ stdenv.mkDerivation (finalAttrs: {
     libGL
     libGLU
     libx11
-    libXv
+    libxv
     libpulseaudio
     openal
     udev
diff --git a/pkgs/by-name/av/avidemux/package.nix b/pkgs/by-name/av/avidemux/package.nix
index 8257e6696dca..e08c57ac3b85 100644
--- a/pkgs/by-name/av/avidemux/package.nix
+++ b/pkgs/by-name/av/avidemux/package.nix
@@ -9,7 +9,7 @@
   gettext,
   libvdpau,
   libva,
-  libXv,
+  libxv,
   sqlite,
   yasm,
   freetype,
@@ -109,7 +109,7 @@ stdenv.mkDerivation (finalAttrs: {
     gettext
     libvdpau
     libva
-    libXv
+    libxv
     sqlite
     fribidi
     fontconfig
diff --git a/pkgs/by-name/bs/bsnes-hd/package.nix b/pkgs/by-name/bs/bsnes-hd/package.nix
index c00a605aa763..f6decae52c64 100644
--- a/pkgs/by-name/bs/bsnes-hd/package.nix
+++ b/pkgs/by-name/bs/bsnes-hd/package.nix
@@ -6,7 +6,7 @@
   gtk3,
   gtksourceview3,
   libx11,
-  libXv,
+  libxv,
   libao,
   libicns,
   libpulseaudio,
@@ -60,7 +60,7 @@ stdenv.mkDerivation {
   ]
   ++ lib.optionals stdenv.hostPlatform.isLinux [
     libx11
-    libXv
+    libxv
     udev
     gtk3
     gtksourceview3
diff --git a/pkgs/by-name/ci/cinelerra/package.nix b/pkgs/by-name/ci/cinelerra/package.nix
index e6139855351a..9f5ac21fb22a 100644
--- a/pkgs/by-name/ci/cinelerra/package.nix
+++ b/pkgs/by-name/ci/cinelerra/package.nix
@@ -27,7 +27,7 @@
   openexr,
   libxext,
   libXxf86vm,
-  libXv,
+  libxv,
   libxi,
   libx11,
   libxft,
@@ -98,7 +98,7 @@ stdenv.mkDerivation {
     openexr
     libxext
     libXxf86vm
-    libXv
+    libxv
     libxi
     libx11
     libxft
diff --git a/pkgs/by-name/fr/freerdp/package.nix b/pkgs/by-name/fr/freerdp/package.nix
index 97bf400bddf2..67a1f72cbfff 100644
--- a/pkgs/by-name/fr/freerdp/package.nix
+++ b/pkgs/by-name/fr/freerdp/package.nix
@@ -29,7 +29,7 @@
   libxrandr,
   libxrender,
   libxtst,
-  libXv,
+  libxv,
   libxkbcommon,
   libxkbfile,
   wayland,
@@ -127,7 +127,7 @@ stdenv.mkDerivation (finalAttrs: {
     libxrandr
     libxrender
     libxtst
-    libXv
+    libxv
     libjpeg_turbo
     libkrb5
     libopus
diff --git a/pkgs/by-name/hi/higan/package.nix b/pkgs/by-name/hi/higan/package.nix
index 30910760f250..79523e2ded29 100644
--- a/pkgs/by-name/hi/higan/package.nix
+++ b/pkgs/by-name/hi/higan/package.nix
@@ -8,7 +8,7 @@
   libGL,
   libGLU,
   libx11,
-  libXv,
+  libxv,
   libao,
   libicns,
   libpulseaudio,
@@ -51,7 +51,7 @@ stdenv.mkDerivation (finalAttrs: {
     libGL
     libGLU
     libx11
-    libXv
+    libxv
     libpulseaudio
     openal
     udev
diff --git a/pkgs/by-name/in/intel-gpu-tools/package.nix b/pkgs/by-name/in/intel-gpu-tools/package.nix
index 839e191b7ed3..404cbdc30ff2 100644
--- a/pkgs/by-name/in/intel-gpu-tools/package.nix
+++ b/pkgs/by-name/in/intel-gpu-tools/package.nix
@@ -30,7 +30,7 @@
   libx11,
   libxext,
   libxrandr,
-  libXv,
+  libxv,
   openssl,
   peg,
   procps,
@@ -81,7 +81,7 @@ stdenv.mkDerivation (finalAttrs: {
     libx11
     libxext
     libxrandr
-    libXv
+    libxv
     openssl
     peg
     procps
diff --git a/pkgs/by-name/li/libxvmc/package.nix b/pkgs/by-name/li/libxvmc/package.nix
index e651a3e46f4b..d6bbc15c7ab4 100644
--- a/pkgs/by-name/li/libxvmc/package.nix
+++ b/pkgs/by-name/li/libxvmc/package.nix
@@ -6,7 +6,7 @@
   xorgproto,
   libx11,
   libxext,
-  libXv,
+  libxv,
   writeScript,
   testers,
 }:
@@ -33,7 +33,7 @@ stdenv.mkDerivation (finalAttrs: {
     xorgproto
     libx11
     libxext
-    libXv
+    libxv
   ];
 
   propagatedBuildInputs = [ xorgproto ];
diff --git a/pkgs/by-name/qe/qemacs/package.nix b/pkgs/by-name/qe/qemacs/package.nix
index 14b902da6a9f..a9fe44745baa 100644
--- a/pkgs/by-name/qe/qemacs/package.nix
+++ b/pkgs/by-name/qe/qemacs/package.nix
@@ -8,7 +8,7 @@
   enableX11 ? true,
   libx11,
   libxext,
-  libXv,
+  libxv,
   libpng,
 }:
 
@@ -37,7 +37,7 @@ stdenv.mkDerivation {
     libpng
     libx11
     libxext
-    libXv
+    libxv
   ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/by-name/qm/qmplay2/package.nix b/pkgs/by-name/qm/qmplay2/package.nix
index b244cca806e8..1799ab01f934 100644
--- a/pkgs/by-name/qm/qmplay2/package.nix
+++ b/pkgs/by-name/qm/qmplay2/package.nix
@@ -8,7 +8,7 @@
   fribidi,
   game-music-emu,
   libxdmcp,
-  libXv,
+  libxv,
   libass,
   libcddb,
   libcdio,
@@ -62,7 +62,7 @@ stdenv.mkDerivation (finalAttrs: {
     fribidi
     game-music-emu
     libxdmcp
-    libXv
+    libxv
     libass
     libcddb
     libcdio
diff --git a/pkgs/by-name/sn/snes9x/package.nix b/pkgs/by-name/sn/snes9x/package.nix
index 57701e16fbd4..316d8a8dc1bd 100644
--- a/pkgs/by-name/sn/snes9x/package.nix
+++ b/pkgs/by-name/sn/snes9x/package.nix
@@ -11,7 +11,7 @@
   libxext,
   libxinerama,
   libxrandr,
-  libXv,
+  libxv,
   libepoxy,
   libpng,
   libselinux,
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [
     libx11
-    libXv
+    libxv
     minizip
     zlib
   ]
diff --git a/pkgs/by-name/vi/virtualglLib/package.nix b/pkgs/by-name/vi/virtualglLib/package.nix
index c277e9d7fece..5511583165c3 100644
--- a/pkgs/by-name/vi/virtualglLib/package.nix
+++ b/pkgs/by-name/vi/virtualglLib/package.nix
@@ -5,7 +5,7 @@
   cmake,
   libGL,
   libGLU,
-  libXv,
+  libxv,
   libxtst,
   libxi,
   libjpeg_turbo,
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
     libGL
     libGLU
     fltk_1_3
-    libXv
+    libxv
     libxtst
     libxi
     libxcb-keysyms
diff --git a/pkgs/by-name/xi/xine-lib/package.nix b/pkgs/by-name/xi/xine-lib/package.nix
index 96a26814b0fe..9e3d9d07b6b4 100644
--- a/pkgs/by-name/xi/xine-lib/package.nix
+++ b/pkgs/by-name/xi/xine-lib/package.nix
@@ -11,7 +11,7 @@
   libx11,
   libxext,
   libxinerama,
-  libXv,
+  libxv,
   libcaca,
   libcdio,
   libmng,
@@ -65,8 +65,8 @@ stdenv.mkDerivation (finalAttrs: {
     libxext
     libxinerama
     libxinerama
-    libXv
-    libXv
+    libxv
+    libxv
     libcaca
     libcdio
     libmng
diff --git a/pkgs/by-name/xi/xine-ui/package.nix b/pkgs/by-name/xi/xine-ui/package.nix
index 5071a36e4c38..76ebc71b86b8 100644
--- a/pkgs/by-name/xi/xine-ui/package.nix
+++ b/pkgs/by-name/xi/xine-ui/package.nix
@@ -8,7 +8,7 @@
   libxi,
   libxinerama,
   libxtst,
-  libXv,
+  libxv,
   libXxf86vm,
   libjpeg,
   libpng,
@@ -54,7 +54,7 @@ stdenv.mkDerivation (finalAttrs: {
     libxi
     libxinerama
     libxtst
-    libXv
+    libxv
     libXxf86vm
     libjpeg
     libpng
diff --git a/pkgs/by-name/xj/xjadeo/package.nix b/pkgs/by-name/xj/xjadeo/package.nix
index 3b2d790b80a8..828ed719f2ad 100644
--- a/pkgs/by-name/xj/xjadeo/package.nix
+++ b/pkgs/by-name/xj/xjadeo/package.nix
@@ -9,7 +9,7 @@
   libjack2,
   liblo,
   libx11,
-  libXv,
+  libxv,
   pkg-config,
   portmidi,
   libxpm,
@@ -46,7 +46,7 @@ stdenv.mkDerivation (finalAttrs: {
     freetype
     libGLU
     liblo
-    libXv
+    libxv
     portmidi
   ];
 
diff --git a/pkgs/development/libraries/ffmpeg/generic.nix b/pkgs/development/libraries/ffmpeg/generic.nix
index d331f1d14a72..203052505e5e 100644
--- a/pkgs/development/libraries/ffmpeg/generic.nix
+++ b/pkgs/development/libraries/ffmpeg/generic.nix
@@ -314,7 +314,7 @@
   libxcb,
   libxext,
   libxml2,
-  libXv,
+  libxv,
   nv-codec-headers,
   nv-codec-headers-12,
   ocl-icd, # OpenCL ICD
@@ -972,7 +972,7 @@ stdenv.mkDerivation (
       ++ optionals withXeve [ xeve ]
       ++ optionals withXlib [
         libx11
-        libXv
+        libxv
         libxext
       ]
       ++ optionals withXml2 [ libxml2 ]
diff --git a/pkgs/development/libraries/gstreamer/base/default.nix b/pkgs/development/libraries/gstreamer/base/default.nix
index d1e731bd882e..a8c80341210f 100644
--- a/pkgs/development/libraries/gstreamer/base/default.nix
+++ b/pkgs/development/libraries/gstreamer/base/default.nix
@@ -27,7 +27,7 @@
   enableX11 ? stdenv.hostPlatform.isLinux,
   libxext,
   libxi,
-  libXv,
+  libxv,
   libdrm,
   enableWayland ? stdenv.hostPlatform.isLinux,
   wayland-scanner,
@@ -113,7 +113,7 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optionals enableX11 [
     libxext
     libxi
-    libXv
+    libxv
   ]
   ++ lib.optionals enableWayland [
     wayland
diff --git a/pkgs/os-specific/linux/nvidia-x11/settings.nix b/pkgs/os-specific/linux/nvidia-x11/settings.nix
index 754acdaf588b..cf612b17c027 100644
--- a/pkgs/os-specific/linux/nvidia-x11/settings.nix
+++ b/pkgs/os-specific/linux/nvidia-x11/settings.nix
@@ -12,7 +12,7 @@ nvidia_x11: sha256:
   dbus,
   vulkan-headers,
   gtk3,
-  libXv,
+  libxv,
   libxrandr,
   libxext,
   libXxf86vm,
@@ -88,7 +88,7 @@ let
   runtimeDependencies = [
     libglvnd
     libxrandr
-    libXv
+    libxv
   ];
 
   runtimeLibraryPath = lib.makeLibraryPath runtimeDependencies;
@@ -143,7 +143,7 @@ stdenv.mkDerivation {
 
   buildInputs = [
     jansson
-    libXv
+    libxv
     libxrandr
     libxext
     libXxf86vm