# Weird Pkg.update() behavior (again)

**URL:** <https://discourse.julialang.org/t/weird-pkg-update-behavior-again/7786>\
**Category:** General Usage\
**Tags:** pkg\
**Created:** [December 15, 2017, 1:02pm UTC](https://discourse.julialang.org/t/weird-pkg-update-behavior-again/7786 "2017-12-15T13:02:49Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![crbinz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/crbinz/32/1919_2.png) [@crbinz](https://discourse.julialang.org/u/crbinz)\
**Post date:** [December 15, 2017, 1:02pm UTC](https://discourse.julialang.org/t/weird-pkg-update-behavior-again/7786/1 "2017-12-15T13:02:49Z")

</div>

Using Julia 0.6.1 on Windows, `Pkg.update()` fails:

```julia
julia> Pkg.update()
INFO: Updating METADATA...
INFO: Updating LoewnerJohnEllipsoids master...
INFO: Updating EarthOrientation master...
INFO: Updating PolygonClipping master...
INFO: Updating QHull master...
INFO: Updating ReferenceFrames master...
INFO: Updating Astrodynamics master...
INFO: Computing changes...
INFO: Upgrading BinDeps: v0.8.0 => v0.8.1
INFO: Upgrading DataStructures: v0.7.2 => v0.7.3
INFO: Upgrading IterTools: v0.1.0 => v0.2.0
INFO: Upgrading JSON: v0.16.2 => v0.16.3
INFO: Upgrading LinearMaps: v1.0.3 => v1.0.4
INFO: Upgrading OnlineStatsBase: v0.3.0 => v0.3.1
INFO: Upgrading PlotlyJS: v0.7.1 => v0.8.0
INFO: Upgrading Plots: v0.14.0 => v0.14.1
INFO: Upgrading URIParser: v0.2.0 => v0.3.0
INFO: Rolling back Plots from v0.14.1 to v0.14.0
INFO: Rolling back PlotlyJS from v0.8.0 to v0.7.1
INFO: Rolling back OnlineStatsBase from v0.3.1 to v0.3.0
INFO: Rolling back LinearMaps from v1.0.4 to v1.0.3
INFO: Rolling back JSON from v0.16.3 to v0.16.2
INFO: Rolling back IterTools from v0.2.0 to v0.1.0
INFO: Rolling back DataStructures from v0.7.3 to v0.7.2
INFO: Rolling back BinDeps from v0.8.1 to v0.8.0
ERROR: GitError(Code:ERROR, Class:Odb, Invalid pack file - invalid packfile type in header)
Stacktrace:
 [1] macro expansion at .\libgit2\error.jl:99 [inlined]
 [2] #fetch#41(::Base.LibGit2.FetchOptions, ::String, ::Function, ::Base.LibGit2.GitRemote, ::Array{String,1}) at .\libgit2\remote.jl:226
 [3] (::Base.LibGit2.#kw##fetch)(::Array{Any,1}, ::Base.LibGit2.#fetch, ::Base.LibGit2.GitRemote, ::Array{String,1}) at .\<missing>:0
 [4] #fetch#84(::String, ::String, ::Array{String,1}, ::Nullable{Base.LibGit2.AbstractCredentials}, ::Function, ::Base.LibGit2.GitRepo) at .\libgit2\libgit2.jl:312
 [5] (::Base.LibGit2.#kw##fetch)(::Array{Any,1}, ::Base.LibGit2.#fetch, ::Base.LibGit2.GitRepo) at .\<missing>:0
 [6] fetch(::Base.LibGit2.GitRepo, ::String, ::String) at .\pkg\write.jl:15
 [7] #3 at .\pkg\write.jl:53 [inlined]
 [8] with(::Base.Pkg.Write.##3#4{String,String}, ::Base.LibGit2.GitRepo) at .\libgit2\types.jl:608
 [9] resolve(::Dict{String,Base.Pkg.Types.VersionSet}, ::Dict{String,Dict{VersionNumber,Base.Pkg.Types.Available}}, ::Dict{String,Tuple{VersionNumber,Bool}}, ::Dict{String,Base.Pkg.Types.Fixed}, ::Dict{String,VersionNumber}, ::Set{String}) at .\pkg\entry.jl:542
 [10] update(::String, ::Set{String}) at .\pkg\entry.jl:461
 [11] (::Base.Pkg.Dir.##4#7{Array{Any,1},Base.Pkg.Entry.#update,Tuple{String,Set{String}}})() at .\pkg\dir.jl:36
 [12] cd(::Base.Pkg.Dir.##4#7{Array{Any,1},Base.Pkg.Entry.#update,Tuple{String,Set{String}}}, ::String) at .\file.jl:59
 [13] #cd#1(::Array{Any,1}, ::Function, ::Function, ::String, ::Vararg{Any,N} where N) at .\pkg\dir.jl:36
 [14] update() at .\pkg\pkg.jl:228

```

Note that all of the upgraded packages are rolled back to the previous version immediately, in addition to the update failing altogether because of an “invalid pack file”.

---

<div class="post-metadata">

**Author:** ![crbinz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/crbinz/32/1919_2.png) [@crbinz](https://discourse.julialang.org/u/crbinz)\
**Post date:** [January 3, 2018, 2:11pm UTC](https://discourse.julialang.org/t/weird-pkg-update-behavior-again/7786/2 "2018-01-03T14:11:28Z")

</div>

Running `git fsck --full` in `~/.julia/v0.6/URIParser/` showed all kinds of errors, so I removed `URIParser` from `~/.julia/v0.6/` and `~/.julia/.cache/` and re-added it with `Pkg.add("URIParser")`, and now things seem to work. 🤷‍♂️