The Bliss server pack is no more, the server build tool has been renamed Reality and will support the Bliss databases and add-ons. You can gain access to the 1.7.4.4 code (Bliss) at the repository below; however, no further development will be made in that branch. All new code will be in the 1.7.5 branch (Reality) and the devel branch.
You can gain access to the repository here.
You can gain access to the repository here.