stripping (with flags -S) in  /nix/store/3vr1valqprqc0y1r0lwx810i2q628lad-sdf-library/lib 
strip: /nix/store/3vr1valqprqc0y1r0lwx810i2q628lad-sdf-library/lib/pkgconfig/sdf-library.pc: File format not recognized
patching ELF executables and libraries
patching script interpreter paths