~/Julia$ rm -rf jlpkgtmp && JULIA_PKGDIR=$PWD/jlpkgtmp julia-0.6/julia --depwarn=no
               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?help" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.6.0-pre.beta.11 (2017-04-03 14:43 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit daefda4* (0 days old master)
|__/                   |  x86_64-linux-gnu

julia> Pkg.init(); Pkg.add("StatsModels")
INFO: Initializing package repository /home/tkelman/Julia/jlpkgtmp/v0.6
INFO: Cloning METADATA from https://github.com/JuliaLang/METADATA.jl
INFO: Cloning cache of CategoricalArrays from https://github.com/JuliaData/CategoricalArrays.jl.git
INFO: Cloning cache of Compat from https://github.com/JuliaLang/Compat.jl.git
INFO: Cloning cache of DataStructures from https://github.com/JuliaCollections/DataStructures.jl.git
INFO: Cloning cache of DataTables from https://github.com/JuliaData/DataTables.jl.git
INFO: Cloning cache of FileIO from https://github.com/JuliaIO/FileIO.jl.git
INFO: Cloning cache of GZip from https://github.com/JuliaIO/GZip.jl.git
INFO: Cloning cache of NullableArrays from https://github.com/JuliaStats/NullableArrays.jl.git
INFO: Cloning cache of Reexport from https://github.com/simonster/Reexport.jl.git
INFO: Cloning cache of SortingAlgorithms from https://github.com/JuliaCollections/SortingAlgorithms.jl.git
INFO: Cloning cache of SpecialFunctions from https://github.com/JuliaMath/SpecialFunctions.jl.git
INFO: Cloning cache of StatsBase from https://github.com/JuliaStats/StatsBase.jl.git
INFO: Cloning cache of StatsModels from https://github.com/JuliaStats/StatsModels.jl.git
INFO: Installing CategoricalArrays v0.1.3
INFO: Installing Compat v0.21.0
INFO: Installing DataStructures v0.5.3
INFO: Installing DataTables v0.0.2
INFO: Installing FileIO v0.3.1
INFO: Installing GZip v0.3.0
INFO: Installing NullableArrays v0.1.0
INFO: Installing Reexport v0.0.3
INFO: Installing SortingAlgorithms v0.1.1
INFO: Installing SpecialFunctions v0.1.1
INFO: Installing StatsBase v0.13.1
INFO: Installing StatsModels v0.0.2
INFO: Package database updated

julia> using StatsModels
INFO: Precompiling module StatsModels.
<some unrelated method overwrite warnings>

julia> exit()
~/Julia$ JULIA_PKGDIR=$PWD/jlpkgtmp julia-0.6/julia --depwarn=no
               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?help" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.6.0-pre.beta.11 (2017-04-03 14:43 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit daefda4* (0 days old master)
|__/                   |  x86_64-linux-gnu

julia> Pkg.pin("StatsBase", v"0.13.0") # does not depend on SpecialFunctions
INFO: Creating StatsBase branch pinned.36e5b015.tmp
INFO: Removing SpecialFunctions v0.1.1

julia> using StatsModels # this should trigger a recompile, not fail
ERROR: ArgumentError: Module SpecialFunctions not found in current path.
Run `Pkg.add("SpecialFunctions")` to install the SpecialFunctions package.
Stacktrace:
 [1] require(::Symbol) at ./loading.jl:403
 [2] _include_from_serialized(::String) at ./loading.jl:157
 [3] _require_from_serialized(::Int64, ::Symbol, ::String, ::Bool) at ./loading.jl:194
 [4] _require_search_from_serialized(::Int64, ::Symbol, ::String, ::Bool) at ./loading.jl:224
 [5] require(::Symbol) at ./loading.jl:409

julia> touch(Pkg.dir("StatsModels", "src", "StatsModels.jl"));

julia> using StatsModels
INFO: Recompiling stale cache file /home/tkelman/Julia/jlpkgtmp/lib/v0.6/StatsModels.ji for module StatsModels.
<some unrelated method overwrite warnings>