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-rw-r--r--pkgs/development/libraries/gtk/gtk3-setup-hook.sh21
1 files changed, 20 insertions, 1 deletions
diff --git a/pkgs/development/libraries/gtk/gtk3-setup-hook.sh b/pkgs/development/libraries/gtk/gtk3-setup-hook.sh
index bddeb2d25d50..5a0eea0fc285 100644
--- a/pkgs/development/libraries/gtk/gtk3-setup-hook.sh
+++ b/pkgs/development/libraries/gtk/gtk3-setup-hook.sh
@@ -1,10 +1,29 @@
+# shellcheck shell=bash
+
 fixupOutputHooks+=(_gtk3CleanComments)
 
 # Clean comments that link to generator of the file
 _gtk3CleanComments() {
-    local f="$prefix/lib/gtk-3.0/3.0.0/immodules.cache"
+    local f="${prefix:?}/lib/gtk-3.0/3.0.0/immodules.cache"
     if [ -f "$f" ]; then
         sed 's|Created by .*bin/gtk-query-|Created by bin/gtk-query-|' -i "$f"
     fi
 }
 
+# Packages often run gtk-update-icon-cache to include their icons in themes’ icon cache.
+# However, since each package is installed to its own prefix, the files will only collide.
+dropIconThemeCache() {
+    if [[ -z "${dontDropIconThemeCache:-}" ]]; then
+        local icondir="${out:?}/share/icons"
+        if [[ -d "${icondir}" ]]; then
+            # App icons are supposed to go to hicolor theme, since it is a fallback theme as per [icon-theme-spec], but some might still choose to install stylized icons to other themes.
+            find "${icondir}" -name 'icon-theme.cache' -print0 \
+              | while IFS= read -r -d '' file; do
+                echo "Removing ${file}"
+                rm -f "${file}"
+            done
+        fi
+    fi
+}
+
+preFixupPhases="$preFixupPhases dropIconThemeCache"