Partial build log
this derivation will be built:
/nix/store/x0dwqwmfj1vgb8x86akdaz72xgdm1qwq-windowlab-1.40.tar.drv
building '/nix/store/yjfvyjnsn7r7pvnlip01g4dbcjvgmc3w-windowlab-1.40.tar.drv'...
windowlab> trying http://nickgravgaard.com/windowlab/windowlab-1.40.tar
windowlab> % Total % Received % Xferd Average Speed Time Time Time Current
windowlab> Dload Upload Total Spent Left Speed
windowlab> 100 69 100 69 0 0 572 0 --:--:-- --:--:-- --:--:-- 575
windowlab> 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
windowlab> curl: (22) The requested URL returned error: 404
windowlab> error checking the existence of file:///dev/null/sha256/1fx4jwq4s98p2wpvawsiww7d6568bpjgcjpks61dzfj8p2j32s4d:
windowlab> curl: (37) Couldn't open file /dev/null/sha256/1fx4jwq4s98p2wpvawsiww7d6568bpjgcjpks61dzfj8p2j32s4d
windowlab> error: cannot download windowlab-1.40.tar from any mirror
error: builder for '/nix/store/yjfvyjnsn7r7pvnlip01g4dbcjvgmc3w-windowlab-1.40.tar.drv' failed with exit code 1
error: