diff --git a/pkgs/desktops/gnome-3/extensions/appindicator/default.nix b/pkgs/desktops/gnome-3/extensions/appindicator/default.nix
index da0d73364a95..5f34d0791142 100644
--- a/pkgs/desktops/gnome-3/extensions/appindicator/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/appindicator/default.nix
@@ -18,10 +18,12 @@ stdenv.mkDerivation rec {
 
   uuid = "appindicatorsupport@rgcjonas.gmail.com";
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/${uuid}
     cp *.js $out/share/gnome-shell/extensions/${uuid}
     cp -r interfaces-xml $out/share/gnome-shell/extensions/${uuid}
     cp metadata.json $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/battery-status/default.nix b/pkgs/desktops/gnome-3/extensions/battery-status/default.nix
index 44b3f04f79d6..c6518201da01 100644
--- a/pkgs/desktops/gnome-3/extensions/battery-status/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/battery-status/default.nix
@@ -14,8 +14,10 @@ stdenv.mkDerivation rec {
   uuid = "battery_status@milliburn.github.com";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions/
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/caffeine/default.nix b/pkgs/desktops/gnome-3/extensions/caffeine/default.nix
index 608d44a2892f..770c32f21e79 100644
--- a/pkgs/desktops/gnome-3/extensions/caffeine/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/caffeine/default.nix
@@ -18,13 +18,17 @@ stdenv.mkDerivation rec {
   ];
 
   buildPhase = ''
+    runHook preBuild
     ${bash}/bin/bash ./update-locale.sh
     glib-compile-schemas --strict --targetdir=caffeine@patapon.info/schemas/ caffeine@patapon.info/schemas
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/clipboard-indicator/default.nix b/pkgs/desktops/gnome-3/extensions/clipboard-indicator/default.nix
index 640903bfe4ed..3e6903c56423 100644
--- a/pkgs/desktops/gnome-3/extensions/clipboard-indicator/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/clipboard-indicator/default.nix
@@ -14,8 +14,10 @@ stdenv.mkDerivation rec {
   uuid = "clipboard-indicator@tudmotu.com";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/${uuid}
     cp -r * $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/drop-down-terminal/default.nix b/pkgs/desktops/gnome-3/extensions/drop-down-terminal/default.nix
index fb7132015944..3c6d181178b4 100644
--- a/pkgs/desktops/gnome-3/extensions/drop-down-terminal/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/drop-down-terminal/default.nix
@@ -21,8 +21,10 @@ stdenv.mkDerivation rec {
   ];
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions/
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/icon-hider/default.nix b/pkgs/desktops/gnome-3/extensions/icon-hider/default.nix
index efaef03f3b11..844c8ad84d79 100644
--- a/pkgs/desktops/gnome-3/extensions/icon-hider/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/icon-hider/default.nix
@@ -14,8 +14,10 @@ stdenv.mkDerivation rec {
   uuid = "icon-hider@kalnitsky.org";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/impatience/default.nix b/pkgs/desktops/gnome-3/extensions/impatience/default.nix
index 230498f5d7bc..073a4301cc5e 100644
--- a/pkgs/desktops/gnome-3/extensions/impatience/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/impatience/default.nix
@@ -16,12 +16,16 @@ stdenv.mkDerivation rec {
   ];
 
   buildPhase = ''
+    runHook preBuild
     make schemas
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r impatience $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   uuid = "impatience@gfxmonk.net";
diff --git a/pkgs/desktops/gnome-3/extensions/mpris-indicator-button/default.nix b/pkgs/desktops/gnome-3/extensions/mpris-indicator-button/default.nix
index fe3a079c01be..0c1d98b2fae0 100644
--- a/pkgs/desktops/gnome-3/extensions/mpris-indicator-button/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/mpris-indicator-button/default.nix
@@ -17,8 +17,10 @@ stdenv.mkDerivation rec {
   uuid = "mprisindicatorbutton@JasonLG1979.github.io";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/night-theme-switcher/default.nix b/pkgs/desktops/gnome-3/extensions/night-theme-switcher/default.nix
index be6c1916ab42..71b530946749 100644
--- a/pkgs/desktops/gnome-3/extensions/night-theme-switcher/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/night-theme-switcher/default.nix
@@ -18,8 +18,10 @@ stdenv.mkDerivation rec {
   uuid = "nightthemeswitcher@romainvigier.fr";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/
     cp -r src/ $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/paperwm/default.nix b/pkgs/desktops/gnome-3/extensions/paperwm/default.nix
index 7a79b691a4df..f5ffac9b2f34 100644
--- a/pkgs/desktops/gnome-3/extensions/paperwm/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/paperwm/default.nix
@@ -16,8 +16,10 @@ stdenv.mkDerivation rec {
   dontBuild = true;
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/${uuid}
     cp -r . $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/pidgin-im-integration/default.nix b/pkgs/desktops/gnome-3/extensions/pidgin-im-integration/default.nix
index e13941ee0455..dfcfd63b59db 100644
--- a/pkgs/desktops/gnome-3/extensions/pidgin-im-integration/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/pidgin-im-integration/default.nix
@@ -15,10 +15,12 @@ stdenv.mkDerivation rec {
   dontBuild = true;
 
   installPhase = ''
+    runHook preInstall
     share_dir="$prefix/share"
     extensions_dir="$share_dir/gnome-shell/extensions/pidgin@muffinmad"
     mkdir -p "$extensions_dir"
     mv *.js metadata.json dbus.xml schemas locale "$extensions_dir"
+    runHook postInstall
   '';
 
   uuid = "pidgin@muffinmad";
diff --git a/pkgs/desktops/gnome-3/extensions/remove-dropdown-arrows/default.nix b/pkgs/desktops/gnome-3/extensions/remove-dropdown-arrows/default.nix
index acb0e3624298..6d6a04a386cc 100644
--- a/pkgs/desktops/gnome-3/extensions/remove-dropdown-arrows/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/remove-dropdown-arrows/default.nix
@@ -18,9 +18,11 @@ stdenv.mkDerivation rec {
 
   uuid = "remove-dropdown-arrows@mpdeimos.com";
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/${uuid}
     cp extension.js $out/share/gnome-shell/extensions/${uuid}
     cp metadata.json $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/sound-output-device-chooser/default.nix b/pkgs/desktops/gnome-3/extensions/sound-output-device-chooser/default.nix
index 6273a83dfca5..870ac448bb4e 100644
--- a/pkgs/desktops/gnome-3/extensions/sound-output-device-chooser/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/sound-output-device-chooser/default.nix
@@ -28,8 +28,10 @@ stdenv.mkDerivation rec {
 
   uuid = "sound-output-device-chooser@kgshank.net";
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/system-monitor/default.nix b/pkgs/desktops/gnome-3/extensions/system-monitor/default.nix
index 1bc35312593a..1b1da50b7fa7 100644
--- a/pkgs/desktops/gnome-3/extensions/system-monitor/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/system-monitor/default.nix
@@ -27,12 +27,16 @@ stdenv.mkDerivation rec {
   ];
 
   buildPhase = ''
+    runHook preBuild
     glib-compile-schemas --targetdir=${uuid}/schemas ${uuid}/schemas
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   uuid = "system-monitor@paradoxxx.zero.gmail.com";
diff --git a/pkgs/desktops/gnome-3/extensions/tilingnome/default.nix b/pkgs/desktops/gnome-3/extensions/tilingnome/default.nix
index 60ca1dcbef37..57f5a9377baa 100644
--- a/pkgs/desktops/gnome-3/extensions/tilingnome/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/tilingnome/default.nix
@@ -14,12 +14,16 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ glib ];
 
   buildPhase = ''
+    runHook preBuild
     glib-compile-schemas .
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/${uuid}
     cp -r * $out/share/gnome-shell/extensions/${uuid}/
+    runHook postInstall
   '';
 
   uuid = "tilingnome@rliang.github.com";
diff --git a/pkgs/desktops/gnome-3/extensions/timepp/default.nix b/pkgs/desktops/gnome-3/extensions/timepp/default.nix
index 6ac9a4a0331e..f9fc68b548a2 100644
--- a/pkgs/desktops/gnome-3/extensions/timepp/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/timepp/default.nix
@@ -13,8 +13,10 @@ stdenv.mkDerivation rec {
 
   uuid = "timepp@zagortenay333";
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/${uuid}
     cp -r . $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/window-corner-preview/default.nix b/pkgs/desktops/gnome-3/extensions/window-corner-preview/default.nix
index 44402fc6e135..9c5d5266ce27 100644
--- a/pkgs/desktops/gnome-3/extensions/window-corner-preview/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/window-corner-preview/default.nix
@@ -15,8 +15,10 @@ stdenv.mkDerivation rec {
 
   uuid = "window-corner-preview@fabiomereu.it";
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/window-is-ready-remover/default.nix b/pkgs/desktops/gnome-3/extensions/window-is-ready-remover/default.nix
index 15871e661c12..45ac75baf8bf 100644
--- a/pkgs/desktops/gnome-3/extensions/window-is-ready-remover/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/window-is-ready-remover/default.nix
@@ -14,8 +14,10 @@ stdenv.mkDerivation rec {
   uuid = "windowIsReady_Remover@nunofarruca@gmail.com";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions/
     cp -r ${uuid} $out/share/gnome-shell/extensions/${uuid}
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/desktops/gnome-3/extensions/workspace-matrix/default.nix b/pkgs/desktops/gnome-3/extensions/workspace-matrix/default.nix
index 528f4e9f892b..5838999fcba4 100644
--- a/pkgs/desktops/gnome-3/extensions/workspace-matrix/default.nix
+++ b/pkgs/desktops/gnome-3/extensions/workspace-matrix/default.nix
@@ -21,8 +21,10 @@ stdenv.mkDerivation rec {
   buildFlags = "schemas";
 
   installPhase = ''
+    runHook preInstall
     mkdir -p $out/share/gnome-shell/extensions
     cp -r ${uuid} $out/share/gnome-shell/extensions
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {