Partial build log
this derivation will be built:
/nix/store/9fzw3n87vg3240hhfgs5fagp44v0czkg-diffpdf-2.1.3.tar.gz.drv
building '/nix/store/mqnhfdniq92zzgqzjlw5dz0f4l1jrxad-diffpdf-2.1.3.tar.gz.drv'...
diffpdf> trying http://www.qtrac.eu/diffpdf-2.1.3.tar.gz
diffpdf> % Total % Received % Xferd Average Speed Time Time Time Current
diffpdf> Dload Upload Total Spent Left Speed
diffpdf> 0 297 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
diffpdf> curl: (22) The requested URL returned error: 404
diffpdf> error checking the existence of file:///dev/null/sha256/0cr468fi0d512jjj23r5flfzx957vibc9c25gwwhi0d773h2w566:
diffpdf> curl: (37) Couldn't open file /dev/null/sha256/0cr468fi0d512jjj23r5flfzx957vibc9c25gwwhi0d773h2w566
diffpdf> error: cannot download diffpdf-2.1.3.tar.gz from any mirror
error: builder for '/nix/store/mqnhfdniq92zzgqzjlw5dz0f4l1jrxad-diffpdf-2.1.3.tar.gz.drv' failed with exit code 1
error: