this derivation will be built:
  /nix/store/69dhmi550jrhxfd68nzrx9aql9ryrwf8-libxl-3.9.4.3.drv
building '/nix/store/69dhmi550jrhxfd68nzrx9aql9ryrwf8-libxl-3.9.4.3.drv'
libxl-3.9.4.3> unpacking sources
libxl-3.9.4.3> unpacking source archive /nix/store/zdqjhrwfay2000adjhh5rhs020zlw6s0-libxl-lin-3.9.4.3.tar.gz
libxl-3.9.4.3> source root is libxl-3.9.4.3
libxl-3.9.4.3> setting SOURCE_DATE_EPOCH to timestamp 1610530930 of file libxl-3.9.4.3/readme.txt
libxl-3.9.4.3> patching sources
libxl-3.9.4.3> installing
libxl-3.9.4.3> 'include_c' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c'
libxl-3.9.4.3> 'include_c/handle.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/handle.h'
libxl-3.9.4.3> 'include_c/SheetA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/SheetA.h'
libxl-3.9.4.3> 'include_c/BookA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/BookA.h'
libxl-3.9.4.3> 'include_c/AutoFilterW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/AutoFilterW.h'
libxl-3.9.4.3> 'include_c/enum.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/enum.h'
libxl-3.9.4.3> 'include_c/libxl.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/libxl.h'
libxl-3.9.4.3> 'include_c/FontW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/FontW.h'
libxl-3.9.4.3> 'include_c/BookW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/BookW.h'
libxl-3.9.4.3> 'include_c/RichStringW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/RichStringW.h'
libxl-3.9.4.3> 'include_c/FilterColumnA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/FilterColumnA.h'
libxl-3.9.4.3> 'include_c/AutoFilterA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/AutoFilterA.h'
libxl-3.9.4.3> 'include_c/FormatW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/FormatW.h'
libxl-3.9.4.3> 'include_c/FormatA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/FormatA.h'
libxl-3.9.4.3> 'include_c/FontA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/FontA.h'
libxl-3.9.4.3> 'include_c/RichStringA.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/RichStringA.h'
libxl-3.9.4.3> 'include_c/setup.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/setup.h'
libxl-3.9.4.3> 'include_c/FilterColumnW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/FilterColumnW.h'
libxl-3.9.4.3> 'include_c/SheetW.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_c/SheetW.h'
libxl-3.9.4.3> 'include_cpp' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp'
libxl-3.9.4.3> 'include_cpp/IAutoFilterT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/IAutoFilterT.h'
libxl-3.9.4.3> 'include_cpp/IFontT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/IFontT.h'
libxl-3.9.4.3> 'include_cpp/IFormatT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/IFormatT.h'
libxl-3.9.4.3> 'include_cpp/IFilterColumnT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/IFilterColumnT.h'
libxl-3.9.4.3> 'include_cpp/enum.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/enum.h'
libxl-3.9.4.3> 'include_cpp/libxl.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/libxl.h'
libxl-3.9.4.3> 'include_cpp/ISheetT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/ISheetT.h'
libxl-3.9.4.3> 'include_cpp/IRichStringT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/IRichStringT.h'
libxl-3.9.4.3> 'include_cpp/setup.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/setup.h'
libxl-3.9.4.3> 'include_cpp/IBookT.h' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/include_cpp/IBookT.h'
libxl-3.9.4.3> 'license.txt' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/license.txt'
libxl-3.9.4.3> 'lib64' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/lib'
libxl-3.9.4.3> 'lib64/libxl.so' -> '/nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/lib/libxl.so'
libxl-3.9.4.3> post-installation fixup
libxl-3.9.4.3> shrinking RPATHs of ELF executables and libraries in /nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3
libxl-3.9.4.3> shrinking /nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/lib/libxl.so
libxl-3.9.4.3> strip is /nix/store/rkwixq2wda45gxx7zg1qh329zhkbvzzb-gcc-wrapper-11.3.0/bin/strip
libxl-3.9.4.3> stripping (with command strip and flags -S) in  /nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3/lib
libxl-3.9.4.3> patching script interpreter paths in /nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3
libxl-3.9.4.3> checking for references to /build/ in /nix/store/a7y42vhjwfz13xvcvz05qa3rz92wm4xd-libxl-3.9.4.3...

upload niks3: ok