self: super: let srcpkg = super.iosevka-tv-1; binpkg = self.fetchzip { inherit (srcpkg) pname version; stripRoot = false; hash = "sha256-QIuTS70vUQSvDDXjY4uI6SCcu1XT4HjvzpthvrNX4h0="; urls = [ "https://c.krebsco.de/${srcpkg.name}.tar.gz" "https://ni.krebsco.de/~tv/mirrors/iosevka/${srcpkg.name}.tar.gz" ]; }; in if srcpkg.version == binpkg.version then binpkg else srcpkg