zig cc -target x86_64-linux-gnu $(pkg-config --libs --cflags blas gsl) src/main-gsl.c && ./a.out
./a.out: error while loading shared libraries: libgsl.so.27: cannot open shared object file: No such file or directory
ldd ./a.out
linux-vdso.so.1 (0x00007ffd3378a000)
libgsl.so.27 => not found
libc.so.6 => /nix/store/qn3ggz5sf3hkjs2c797xf7nan3amdxmp-glibc-2.38-27/lib/libc.so.6 (0x00007f7e9084f000)
/lib64/ld-linux-x86-64.so.2 => /nix/store/qn3ggz5sf3hkjs2c797xf7nan3amdxmp-glibc-2.38-27/lib64/ld-linux-x86-64.so.2 (0x00007f7e90a39000)