id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 18050 CachedStaticFilesStorage eats @import statement anonymous nobody "Input: {{{ @import '../../3rdparty/pt-sans-generated/stylesheet.css'; html, body { padding: 0; margin: 0; background: transparent; } }}} Output: {{{ url(""../../3rdparty/pt-sans-generated/stylesheet.cc11c6fa559e.css""); html, body { padding: 0; margin: 0; background: transparent; } }}} Without @import statement! Problem located in: {{{ class CachedFilesMixin(object): patterns = ( (""*.css"", ( r""""""(url\(['""]{0,1}\s*(.*?)[""']{0,1}\))"""""", r""""""(@import\s*[""']\s*(.*?)[""'])"""""", )), ) }}} last statement replace whole (@import…) construction with just url(). This quick fix solves a problem: {{{ class FixedCachedFilesMixin(CachedFilesMixin): patterns = ( (""*.css"", ( r""""""(url\(['""]{0,1}\s*(.*?)[""']{0,1}\))"""""", r""""""@import\s*([""']\s*(.*?)[""'])"""""", )), ) class CachedStaticFilesStorage(CachedFilesMixin, StaticFilesStorage): """""" A static file system storage backend which also saves hashed copies of the files it saves. """""" pass }}} But it is definitely a serious bug because @import is completely broken by default. " Bug closed contrib.staticfiles 1.4 Normal fixed CachedStaticFilesStorage css preprocessing @import Accepted 0 0 0 0 0 0