check flags:    
building check-recursive
Making check in lib
make[1]: Entering directory `/tmp/nix-build-0crg5sasq33xshg17q1wc3r08xb9b9g0-asf-support.drv-0/asf-support-1.8/lib'
make[1]: Nothing to be done for `check'.
make[1]: Leaving directory `/tmp/nix-build-0crg5sasq33xshg17q1wc3r08xb9b9g0-asf-support.drv-0/asf-support-1.8/lib'
make[1]: Entering directory `/tmp/nix-build-0crg5sasq33xshg17q1wc3r08xb9b9g0-asf-support.drv-0/asf-support-1.8'
make[1]: Nothing to be done for `check-am'.
make[1]: Leaving directory `/tmp/nix-build-0crg5sasq33xshg17q1wc3r08xb9b9g0-asf-support.drv-0/asf-support-1.8'