check flags:    
building check-recursive
Making check in lib
make[1]: Entering directory `/tmp/nix-build-n9i43h0qyq16b64qh3a3hgjvdbn7g1x9-asf-support.drv-0/asf-support-1.8/lib'
make[1]: Nothing to be done for `check'.
make[1]: Leaving directory `/tmp/nix-build-n9i43h0qyq16b64qh3a3hgjvdbn7g1x9-asf-support.drv-0/asf-support-1.8/lib'
make[1]: Entering directory `/tmp/nix-build-n9i43h0qyq16b64qh3a3hgjvdbn7g1x9-asf-support.drv-0/asf-support-1.8'
make[1]: Nothing to be done for `check-am'.
make[1]: Leaving directory `/tmp/nix-build-n9i43h0qyq16b64qh3a3hgjvdbn7g1x9-asf-support.drv-0/asf-support-1.8'