-NO_BUILD_EPUB = False
-NO_BUILD_TXT = False
-# You'll need XeLaTeX to generate PDF files.
-NO_BUILD_PDF = True
-# You'll need Calibre installed to generate MOBI files.
-NO_BUILD_MOBI = True
-
-ALL_EPUB_ZIP = 'wolnelektury_pl_epub'
-ALL_PDF_ZIP = 'wolnelektury_pl_pdf'
-ALL_MOBI_ZIP = 'wolnelektury_pl_mobi'