build01: building myxqzhslcjjrm2v2jn6mf0yk01a9nls4-fonts.conf.drv
/nix/store/y5yj5fsm3vyyghmmpz07sap578g6im4m-fontconfig-2.17.1/etc/fonts/fonts.conf:2: warning: failed to load external entity "urn:fontconfig:fonts.dtd"
<!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
                                                       ^