check flags:    
[pbuilding check-recursive
Making check in lib
[pmake[1]: Entering directory `/tmp/nix-build-7d6cm541w2k58vjnsgyfifaxhlkz71yd-ptable-support.drv-0/ptable-support-1.2/lib'
make[1]: Nothing to be done for `check'.
make[1]: Leaving directory `/tmp/nix-build-7d6cm541w2k58vjnsgyfifaxhlkz71yd-ptable-support.drv-0/ptable-support-1.2/lib'
[q[pmake[1]: Entering directory `/tmp/nix-build-7d6cm541w2k58vjnsgyfifaxhlkz71yd-ptable-support.drv-0/ptable-support-1.2'
make[1]: Nothing to be done for `check-am'.
make[1]: Leaving directory `/tmp/nix-build-7d6cm541w2k58vjnsgyfifaxhlkz71yd-ptable-support.drv-0/ptable-support-1.2'
[q[q