-export PATH:=$(builddir)/lily/$(outconfbase):$(builddir)/buildscripts/$(outconfbase):$(PATH)
-
-# LilyPond is often run from within $(outdir), making a relative
-# PREFIX incorrect.
-export LILYPONDPREFIX:=$(build_lilypond_datadir)
-
-export PYTHONPATH:=$(builddir)/python/$(outconfbase):$(PYTHONPATH)
-
-## arg, TEXINPUTS, TFMFONTS, MFINPUTS may still override and thus break this
-export TEXMF:={$(LILYPONDPREFIX),$(shell kpsexpand \$$TEXMF)}
-
-export MFINPUTS:=
-export TEXINPUTS:=
-export TFMFONTS:=
-export extra_mem_top=1000000
-export extra_mem_bottom=1000000
-export pool_size=500000
-
+## better not take the binaries from a precompiled bundle, as they
+## rely on env vars for relocation.
+##