Issue installing with Pkg2 on linux

[kmsquire]

julia> Pkg2.add("GLPK")
INFO: Installing GLPK v0.2.4
INFO: Running build script for package GLPK
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 3406k  100 3406k    0     0  1094k      0  0:00:03  0:00:03 --:--:-- 1190k
WARNING: An exception occured while building binary dependencies.
You may have to take manual steps to complete the installation, see the error message below.
To reattempt the installation, run Pkg.fixup("GLPK").

 in runbuildscript at pkg2.jl:235
ERROR: no method unpack_cmd(ASCIIString,ASCIIString)
 in include_from_node1 at loading.jl:92
 in anonymous at no file:238
 in cd at file.jl:25
 in cd at pkg2/dir.jl:28
 in runbuildscript at pkg2.jl:235
 in _fixup at pkg2.jl:291
 in fixup at pkg2.jl:321
 in fixup#g154 at no file
 in fixup#g153 at no file
 in fixup#g152 at no file
 in anonymous at no file:227
 in cd at file.jl:25
 in cd at pkg2/dir.jl:28
 in resolve at pkg2.jl:147
 in resolve at no file (repeats 3 times)
 in anonymous at no file:31
 in cd at file.jl:25
 in cd at pkg2/dir.jl:28
 in edit at pkg2.jl:21
 in add at pkg2.jl:18
 in anonymous at no file:14