This reverts commit 0a944b345e89ca0096974d168f49e1c6830c3fc2, reversing
changes made to 61733ed6ccde3427016720f2e0cd191d3d95152c.
I dislike these massive stdenv changes with unclear motivation,
especially when they involve gratuitous mass renames like NIX_CC ->
NIX_BINUTILS. The previous such rename (NIX_GCC -> NIX_CC) caused
months of pain, so let's not do that again.
DraftSight is "a professional-grade 2D design and drafting solution
that lets you create, edit, view and markup any kind of 2D drawing."
It is available as a binary .deb package for Linux. This package jumps
through the necessary hoops to make it run properly.
