nixpkgs/pkgs/development/libraries/gtk/hooks/drop-icon-theme-cache.sh
John Ericson b7f4bda282 treewide: *Phase(s)? variables are optional
If these aren't defined, the stdenv defaults are used in the `*Phase`
case, or no extra phases are done, in the `*Phases` case.
2019-11-01 14:44:44 -04:00

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# shellcheck shell=bash
# 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"