Got the following: Building uvector-0.1.0.5... [ 1 of 13] Compiling Data.Array.Vector.Prim.Text ( Data/Array/Vector/Prim/Text.hs, dist/build/Data/Array/Vector/Prim/Text.o ) Prologue junk?: .type sD7_entry, @function sD7_entry: # 25 "/tmp/ghc14266_0/ghc14266_0.hc" 1 That seems bad... The Glorious Glasgow Haskell Compilation System, version 6.10.4 This is the deb ghc6 package for unstable. Cabal was installed using ghc 6.8.x. I tried re-installing a couple of other cabal packages, including hps and bytestring, and they went through without a hitch. Brian