this derivation will be built:
  /nix/store/gr2x7xmg7x6w2cmy77f72mlcz9q14d2d-cups-toshiba-estudio-7.89.drv
building '/nix/store/gr2x7xmg7x6w2cmy77f72mlcz9q14d2d-cups-toshiba-estudio-7.89.drv'
cups-toshiba-estudio-7.89> unpacking sources
cups-toshiba-estudio-7.89> unpacking source archive /nix/store/747jrz8fwlrqcn583b5jzmw20945p6qh-TOSHIBA_ColorMFP_CUPS.tar
cups-toshiba-estudio-7.89> tar: Removing leading `/' from member names
cups-toshiba-estudio-7.89> source root is usr
cups-toshiba-estudio-7.89> setting SOURCE_DATE_EPOCH to timestamp 1502150982 of file usr/share/cups/model/Toshiba/TOSHIBA_ColorMFP_CUPS.gz
cups-toshiba-estudio-7.89> patching sources
cups-toshiba-estudio-7.89> patching script interpreter paths in lib/
cups-toshiba-estudio-7.89> lib/cups/filter/est6550_Authentication: interpreter directive changed from "#!/usr/bin/perl -w" to "/nix/store/i33knih9rav8fv8210v0jprkgw0a3k1z-perl-5.36.0/bin/perl -w"
cups-toshiba-estudio-7.89> configuring
cups-toshiba-estudio-7.89> no configure script, doing nothing
cups-toshiba-estudio-7.89> building
cups-toshiba-estudio-7.89> no Makefile, doing nothing
cups-toshiba-estudio-7.89> installing
cups-toshiba-estudio-7.89> post-installation fixup
cups-toshiba-estudio-7.89> shrinking RPATHs of ELF executables and libraries in /nix/store/mxhhjb1833smsbrwv7s2mhmfzm8ldq2v-cups-toshiba-estudio-7.89
cups-toshiba-estudio-7.89> strip is /nix/store/rkwixq2wda45gxx7zg1qh329zhkbvzzb-gcc-wrapper-11.3.0/bin/strip
cups-toshiba-estudio-7.89> stripping (with command strip and flags -S) in  /nix/store/mxhhjb1833smsbrwv7s2mhmfzm8ldq2v-cups-toshiba-estudio-7.89/lib
cups-toshiba-estudio-7.89> patching script interpreter paths in /nix/store/mxhhjb1833smsbrwv7s2mhmfzm8ldq2v-cups-toshiba-estudio-7.89
cups-toshiba-estudio-7.89> checking for references to /build/ in /nix/store/mxhhjb1833smsbrwv7s2mhmfzm8ldq2v-cups-toshiba-estudio-7.89...

upload niks3: ok