stripping (with flags -S) in  /nix/store/2mqbwf8vvp2d44jx3p37jqp3c1pc0q5q-sdf-library/lib 
strip: /nix/store/2mqbwf8vvp2d44jx3p37jqp3c1pc0q5q-sdf-library/lib/pkgconfig/sdf-library.pc: File format not recognized
patching ELF executables and libraries
patching script interpreter paths