wreq updated to 0.2
Updating opencascade oce to 0.16 fix the build.

At some point the build stopped because of X/mesa updates.
netboot: simplify, build only on 64bit
Revert "New package ghcParser"
Merge pull request #3799 from NixOS/revert-3791-master

Revert "New package ghcParser"
Merge pull request #3795 from MP2E/wreq_update

wreq updated to 0.2