these 2 derivations will be built:
  /nix/store/qgvcmya88n2h7x6j0qp76yilgag764hv-libgig-4.3.0.drv
  /nix/store/vb9xigxfyj890ia3fkm2g6zc5772isnm-linuxsampler-2.2.0.drv
these 4 paths will be fetched (1.3 MiB download, 7.1 MiB unpacked):
  /nix/store/zjhj0rffb2yhbrn5iazj2lr1lxmx0ms6-asio-1.24.0
  /nix/store/qsd8a133qcbg30srgrc1vdrx81lb4rm3-libgig-4.3.0.tar.bz2
  /nix/store/1zmwmmc7wz7bisqa3wbawmljhjch10fl-lv2-1.18.2
  /nix/store/yj8wnyg3gaxffkpybc5nmx5q7gbz01ml-lv2-1.18.2-dev