nixpkgs-suyu/pkgs/development/libraries/libxml2/setup-hook.sh

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addXMLCatalogs () {
for kind in dtd xsl; do
if test -d $1/xml/$kind; then
for i in $(find $1/xml/$kind -name catalog.xml); do
export XML_CATALOG_FILES="$XML_CATALOG_FILES $i"
done
fi
done
}
if test -z "$libxmlHookDone"; then
libxmlHookDone=1
# Set up XML_CATALOG_FILES. An empty initial value prevents
# xmllint and xsltproc from looking in /etc/xml/catalog.
export XML_CATALOG_FILES
if test -z "$XML_CATALOG_FILES"; then XML_CATALOG_FILES=" "; fi
envHooks+=(addXMLCatalogs)
fi