# Problems with environment - Tree Hash Mismatch!

**URL:** <https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103>\
**Category:** General Usage\
**Tags:** question\
**Created:** [April 27, 2021, 12:45pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103 "2021-04-27T12:45:03Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [April 27, 2021, 12:45pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/1 "2021-04-27T12:45:03Z")

</div>

I have a Julia project on my machine, and I then run the project on a different machine (cluster). To do that I copy the relevant files including the `Project.toml, manifest.toml` files.  
I included the package `JLD2`, and ran `instantiate` on the cluster machine. This did not work well.  
I got tome errors that the registry is dirty. Looking on the discourse I removed it, and downloaded again, but now I see this error `Error: Tree Hash Mismatch!` when I try to update the environment packages.  
How can this be solved?  
I am running Julia 1.5.3.

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 21, 2021, 4:05pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/2 "2021-05-21T16:05:45Z")

</div>

What filesystem are you using on the cluster? Any chance of upgrading to Julia v1.6?

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 21, 2021, 4:10pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/3 "2021-05-21T16:10:06Z")

</div>

Hey, it’s a cluster machine (linux). So I think there are many filesystems there… But I am not sure. When I am running `df`, I see many filesystems.

To upgrade to julia 1.6 I need to ask someone else to do that (and I will), but that can happen only in a few days.

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 21, 2021, 4:20pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/4 "2021-05-21T16:20:45Z")

</div>

> [@roi.holtzman](#):
>
> Hey, it’s a cluster machine (linux). So I think there are many filesystems there… But I am not sure. When I am running `df` , I see many filesystems.

Are Julia packages installed in your home directory? You can run

```julia
df "${HOME}"

```

to see the filesystem where your home directory is mounted.

> [@roi.holtzman](#):
>
> To upgrade to julia 1.6 I need to ask someone else to do that (and I will), but that can happen only in a few days.

Or without waiting for your sysadmins you can download it from [Download Julia](https://julialang.org/downloads/) and that’s it 😉

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 21, 2021, 4:29pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/5 "2021-05-21T16:29:10Z")

</div>

Sure, it gives:

```julia
$ df "${HOME}"
Filesystem 1K-blocks Used Available Use% Mounted on
gpfs_home_labs 104857600 61083648 43773952 59% /home/labs

```

But isn’t there something special someone needs to do on the cluster? I know that everytime I log in to the cluster I need to load a module of julia to be able to run it. I am not sure how to configure these things…

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 21, 2021, 4:39pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/6 "2021-05-21T16:39:52Z")

</div>

> [@roi.holtzman](#):
>
> Sure, it gives:
> 
> ```julia
> $ df "${HOME}"
> Filesystem 1K-blocks Used Available Use% Mounted on
> gpfs_home_labs 104857600 61083648 43773952 59% /home/labs
> 
> ```

Ugh, sorry, I forgot you need the `-T` flag to see the type:

```julia
df -T "${HOME}"

```

> [@roi.holtzman](#):
>
> But isn’t there something special someone needs to do on the cluster? I know that everytime I log in to the cluster I need to load a module of julia to be able to run it. I am not sure how to configure these things…

Not really, you can follow the [instructions about how to use Julia on Linux](https://julialang.org/downloads/platform/#linux_and_freebsd)

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 21, 2021, 4:46pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/7 "2021-05-21T16:46:10Z")

</div>

the type is `gpfs`.

It is tempting to try to install it myself, but I am afraid to do something wrong… I might just wait for someone to do it…

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 21, 2021, 5:03pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/8 "2021-05-21T17:03:54Z")

</div>

> [@roi.holtzman](#):
>
> the type is `gpfs` .

That’s very likely the issue. Julia v1.6 should be able to deal with it (well, it should still show some warning messages, but it won’t be a fatal error, I believe).

> [@roi.holtzman](#):
>
> It is tempting to try to install it myself, but I am afraid to do something wrong… I might just wait for someone to do it…

It’d be a good occasion for you to learn how to fiddle a bit with programs in Linux systems 😉 You may ask for help to install Julia in a different thread if you have problems. But I also understand if you don’t really feel comfortable doing it yourself.

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 21, 2021, 5:06pm UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/9 "2021-05-21T17:06:43Z")

</div>

Thanks! I already addressed the cluster people asking them teach me how to install julia myself:)  
I hope that will solve the issue!  
I will update here as soon as I figure it out.

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 22, 2021, 10:31am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/10 "2021-05-22T10:31:13Z")

</div>

I have julia 1.6.1 installed on the cluster!

I instantiated my project on the cluster and got errors (only attached those that failed):

```julia
Precompiling project...
  ✗ Xorg_libxcb_jll
  ✗ Xorg_xcb_util_jll
  ✗ Xorg_libX11_jll
  ✗ Xorg_libXfixes_jll
  ✗ Xorg_libxkbfile_jll
  ✗ Xorg_libXrender_jll
  ✗ Xorg_libXext_jll
  ✗ Xorg_xcb_util_wm_jll
  ✗ Xorg_xcb_util_keysyms_jll
  ✗ Xorg_xcb_util_image_jll
  ✗ Xorg_xcb_util_renderutil_jll
  ✗ Xorg_libXcursor_jll
  ✗ Xorg_libXi_jll
  ✗ Libglvnd_jll
  ✗ Xorg_libXinerama_jll
  ✗ Xorg_libXrandr_jll
  ✗ Cairo_jll
  ✗ Xorg_xkbcomp_jll
  ✗ Xorg_xkeyboard_config_jll
  ✗ GLFW_jll
  ✗ xkbcommon_jll
  ✗ Qt5Base_jll
  ✗ GR_jll
  119 dependencies successfully precompiled in 618 seconds (7 already precompiled)
  23 dependencies errored. To see a full report either run `import Pkg; Pkg.precompile()` or load the packages

```

do you know what is the problem?

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 22, 2021, 10:44am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/11 "2021-05-22T10:44:44Z")

</div>

> [@roi.holtzman](#):
>
> ```julia
> To see a full report either run `import Pkg; Pkg.precompile()` or load the packages
> 
> ```

I’d start from doing what the message suggests 🙂

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 22, 2021, 11:10am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/12 "2021-05-22T11:10:57Z")

</div>

I tried, but I don’t get anything…

```julia
julia> import Pkg; Pkg.precompile()
Precompiling project...
  ✗ Xorg_libxcb_jll
  ✗ Xorg_xcb_util_jll
  ✗ Xorg_libX11_jll
  ✗ Xorg_libXfixes_jll
  ✗ Xorg_libxkbfile_jll
  ✗ Xorg_libXrender_jll
  ✗ Xorg_libXext_jll
  ✗ Xorg_xcb_util_image_jll
  ✗ Xorg_xcb_util_renderutil_jll
  ✗ Xorg_xcb_util_wm_jll
  ✗ Xorg_xcb_util_keysyms_jll
  ✗ Xorg_xkbcomp_jll
  ✗ Libglvnd_jll
  ✗ Xorg_libXinerama_jll
  ✗ Xorg_libXi_jll
  ✗ Cairo_jll
  ✗ Xorg_libXcursor_jll
  ✗ Xorg_libXrandr_jll
  ✗ Xorg_xkeyboard_config_jll
  ✗ GLFW_jll
  ✗ xkbcommon_jll
  ✗ Qt5Base_jll
  ✗ GR_jll
  0 dependencies successfully precompiled in 197 seconds (126 already precompiled)

```

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 22, 2021, 11:15am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/13 "2021-05-22T11:15:35Z")

</div>

Try to load one of those packages, as suggested by the error message I quoted before already 🙂 note that in order to load a package it must be in the environment, so you may have to `]add` it

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 22, 2021, 11:31am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/14 "2021-05-22T11:31:56Z")

</div>

It also does not give much information…

```julia
(Ising2d) pkg> add Cairo_jll
    Updating registry at `~/.julia/registries/General`
┌ Warning: Some registries failed to update:
│ — `~/.julia/registries/General` — registry dirty
└ @ Pkg.Types /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.6/Pkg/src/Types.jl:1229
   Resolving package versions...
   Installed XML2_jll ─────────── v2.9.11+0
   Installed MutableArithmetics ─ v0.2.18
   Installed FFTW ─────────────── v1.4.0
   Installed Polynomials ──────── v2.0.9
  Downloaded artifact: Glib
  Downloaded artifact: Gettext
  Downloaded artifact: Expat
  Downloaded artifact: GLFW
  Downloaded artifact: Libiconv
  Downloaded artifact: XML2
  Downloaded artifact: Libffi
  Downloaded artifact: Libmount
  Downloaded artifact: Zstd
  Downloaded artifact: Libuuid
  Downloaded artifact: PCRE
    Updating `~/Mpemba/Ising2d/Project.toml`
  [6e4b80f9] ↓ BenchmarkTools v1.0.0 ⇒ v0.7.0
  [a93c6f00] ↓ DataFrames v1.1.1 ⇒ v1.0.1
  [7a1cc6ca] ↑ FFTW v1.3.2 ⇒ v1.4.0
  [033835bb] ↓ JLD2 v0.4.5 ⇒ v0.4.4
  [91a5bcdd] ↓ Plots v1.14.0 ⇒ v1.13.1
  [295af30f] ↓ Revise v3.1.16 ⇒ v3.1.15
  [2913bbd2] ↓ StatsBase v0.33.8 ⇒ v0.33.6
  [83423d85] + Cairo_jll v1.16.0+6
    Updating `~/Mpemba/Ising2d/Manifest.toml`
  [6e4b80f9] ↓ BenchmarkTools v1.0.0 ⇒ v0.7.0
  [35d6a980] ↓ ColorSchemes v3.12.1 ⇒ v3.12.0
  [3da002f7] ↓ ColorTypes v0.11.0 ⇒ v0.10.12
  [34da2185] ↓ Compat v3.30.0 ⇒ v3.27.0
  [a93c6f00] ↓ DataFrames v1.1.1 ⇒ v1.0.1
  [7a1cc6ca] ↑ FFTW v1.3.2 ⇒ v1.4.0
  [5789e2e9] ↓ FileIO v1.9.0 ⇒ v1.8.0
  [42e2da0e] ↓ Grisu v1.0.2 ⇒ v1.0.0
  [cd3eb016] ↓ HTTP v0.9.8 ⇒ v0.9.6
  [033835bb] ↓ JLD2 v0.4.5 ⇒ v0.4.4
  [aa1ae85d] ↓ JuliaInterpreter v0.8.16 ⇒ v0.8.14
  [6f1432cf] ↓ LoweredCodeUtils v2.1.0 ⇒ v2.0.0
  [d8a4904e] ↓ MutableArithmetics v0.2.19 ⇒ v0.2.18
  [bac558e1] ↓ OrderedCollections v1.4.1 ⇒ v1.4.0
  [91a5bcdd] ↓ Plots v1.14.0 ⇒ v1.13.1
  [f27b6e38] ↓ Polynomials v2.0.10 ⇒ v2.0.9
  [21216c6a] ↓ Preferences v1.2.2 ⇒ v1.2.1
  [08abe8d2] ↓ PrettyTables v1.0.1 ⇒ v1.0.0
  [295af30f] ↓ Revise v3.1.16 ⇒ v3.1.15
  [992d4aef] ↓ Showoff v1.0.3 ⇒ v1.0.2
  [a2af1166] ↓ SortingAlgorithms v1.0.0 ⇒ v0.3.1
  [90137ffa] ↓ StaticArrays v1.2.0 ⇒ v1.1.2
  [82ae8749] - StatsAPI v1.0.0
  [2913bbd2] ↓ StatsBase v0.33.8 ⇒ v0.33.6
  [f269a46b] ↓ TimeZones v1.5.5 ⇒ v1.5.3
  [5c2747f8] ↓ URIs v1.3.0 ⇒ v1.2.0
  [2e619515] ↓ Expat_jll v2.2.10+0 ⇒ v2.2.7+6
  [0656b61e] ↓ GLFW_jll v3.3.4+0 ⇒ v3.3.3+0
  [78b55507] ↓ Gettext_jll v0.21.0+0 ⇒ v0.20.1+7
  [7746bdde] ↓ Glib_jll v2.68.1+0 ⇒ v2.59.0+4
  [e9f186c6] ↓ Libffi_jll v3.2.2+0 ⇒ v3.2.1+4
  [94ce4f54] ↓ Libiconv_jll v1.16.1+0 ⇒ v1.16.0+7
  [4b2f31a3] ↓ Libmount_jll v2.35.0+0 ⇒ v2.34.0+3
  [38a345b3] ↓ Libuuid_jll v2.36.0+0 ⇒ v2.34.0+7
  [2f80f16e] ↓ PCRE_jll v8.44.0+0 ⇒ v8.42.0+4
  [02c8fc9c] ↓ XML2_jll v2.9.12+0 ⇒ v2.9.11+0
  [3161d3a3] ↓ Zstd_jll v1.5.0+0 ⇒ v1.4.8+0
Precompiling project...
  ✗ Xorg_libxcb_jll
  ✗ Xorg_xcb_util_jll
  ✗ Xorg_libX11_jll
  ✗ Xorg_xcb_util_wm_jll
  ✗ Xorg_xcb_util_keysyms_jll
  ✗ Xorg_xcb_util_image_jll
  ✗ Xorg_xcb_util_renderutil_jll
  ✗ Xorg_libXfixes_jll
  ✗ Xorg_libxkbfile_jll
  ✗ Xorg_libXrender_jll
  ✗ Xorg_libXext_jll
  ✗ Libglvnd_jll
  ✗ Xorg_libXinerama_jll
  ✗ Cairo_jll
  ✗ Xorg_libXrandr_jll
  ✗ Xorg_libXcursor_jll
  ✗ Xorg_libXi_jll
  ✗ Xorg_xkbcomp_jll
  ✗ Xorg_xkeyboard_config_jll
  ✗ GLFW_jll
  ✗ xkbcommon_jll
  ✗ Qt5Base_jll
  ✗ GR_jll
  78 dependencies successfully precompiled in 561 seconds (47 already precompiled)
  23 dependencies errored. To see a full report either run `import Pkg; Pkg.precompile()` or load the packages

```

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 22, 2021, 11:35am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/15 "2021-05-22T11:35:51Z")

</div>

Because you aren’t loading the package as I asked, you only installed it. You now need to do

```julia
using Cairo_jll

```

to load the package

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 22, 2021, 11:39am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/16 "2021-05-22T11:39:07Z")

</div>

I actually now did `precompile` again, and I get

```julia
(Ising2d) pkg> precompile
Precompiling project...
  ✗ Xorg_libxcb_jll
  ✗ Xorg_xcb_util_jll
  ✗ Xorg_libX11_jll
  ✗ Xorg_libXfixes_jll
  ✗ Xorg_libxkbfile_jll
  ✗ Xorg_libXrender_jll
  ✗ Xorg_libXext_jll
  ✗ Xorg_xcb_util_image_jll
  ✗ Xorg_xcb_util_renderutil_jll
  ✗ Xorg_xcb_util_wm_jll
  ✗ Xorg_xcb_util_keysyms_jll
  ✗ Xorg_libXcursor_jll
  ✗ Xorg_xkbcomp_jll
  ✗ Libglvnd_jll
  ✗ Xorg_libXinerama_jll
  ✗ Xorg_libXrandr_jll
  ✗ Xorg_libXi_jll
  ✗ Cairo_jll
  ✗ Xorg_xkeyboard_config_jll
  ✗ GLFW_jll
  ✗ xkbcommon_jll
  ✗ Qt5Base_jll
  ✗ GR_jll
  0 dependencies successfully precompiled in 227 seconds (125 already precompiled)

ERROR: The following 1 direct dependency failed to precompile:

Cairo_jll [83423d85-b0ee-5818-9007-b63ccbeb887a]

ERROR: LoadError: LoadError: InitError: could not load library "/home/labs/orenraz/roiho/.julia/artifacts/323b2adff3bbf2980e9f1f62990860b61470af16/lib/libgobject-2.0.so"
/home/labs/orenraz/roiho/.julia/artifacts/323b2adff3bbf2980e9f1f62990860b61470af16/lib/libgobject-2.0.so: undefined symbol: g_date_copy
Stacktrace:
  [1] dlopen(s::String, flags::UInt32; throw_error::Bool)
    @ Base.Libc.Libdl ./libdl.jl:114
  [2] dlopen(s::String, flags::UInt32)
    @ Base.Libc.Libdl ./libdl.jl:114
  [3] macro expansion
    @ ~/.julia/packages/JLLWrappers/bkwIo/src/products/library_generators.jl:54 [inlined]
  [4] __init__ ()
    @ Glib_jll ~/.julia/packages/Glib_jll/nZezQ/src/wrappers/x86_64-linux-gnu.jl:36
  [5] _include_from_serialized(path::String, depmods::Vector{Any})
    @ Base ./loading.jl:674
  [6] _require_search_from_serialized(pkg::Base.PkgId, sourcepath::String)
    @ Base ./loading.jl:760
  [7] _require(pkg::Base.PkgId)
    @ Base ./loading.jl:998
  [8] require(uuidkey::Base.PkgId)
    @ Base ./loading.jl:914
  [9] require(into::Module, mod::Symbol)
    @ Base ./loading.jl:901
 [10] include(mod::Module, _path::String)
    @ Base ./Base.jl:386
 [11] top-level scope
    @ ~/.julia/packages/JLLWrappers/bkwIo/src/toplevel_generators.jl:170
 [12] include
    @ ./Base.jl:386 [inlined]
 [13] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt64}}, source::Nothing)
    @ Base ./loading.jl:1213
 [14] top-level scope
    @ none:1
 [15] eval
    @ ./boot.jl:360 [inlined]
 [16] eval(x::Expr)
    @ Base.MainInclude ./client.jl:446
 [17] top-level scope
    @ none:1
during initialization of module Glib_jll
in expression starting at /home/labs/orenraz/roiho/.julia/packages/Cairo_jll/OlXYv/src/wrappers/x86_64-linux-gnu.jl:4
in expression starting at /home/labs/orenraz/roiho/.julia/packages/Cairo_jll/OlXYv/src/Cairo_jll.jl:2

```

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 22, 2021, 11:43am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/17 "2021-05-22T11:43:10Z")

</div>

Before going on with other guesses, can you please show the value of the `LD_LIBRARY_PATH` environment variable inside Julia, for example with

```julia
ENV["LD_LIBRARY_PATH"]

```

?

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 22, 2021, 11:50am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/18 "2021-05-22T11:50:10Z")

</div>

sure:

```julia
julia> ENV["LD_LIBRARY_PATH"]
"/apps/RH7U2/gnu/julia/1.6.1/lib:/apps/RH7U2/gnu/python/3.6.3/lib:/usr/share/lsf/10.1/linux3.10-glibc2.17-x86_64/lib:/apps/RH7U2/general/IMOD/4.10.8/IMOD/lib:"

```

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [May 22, 2021, 11:52am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/19 "2021-05-22T11:52:27Z")

</div>

What happens if you start Julia with

```julia
LD_LIBRARY_PATH="" julia

```

so that this environment variable is cleared before starting Julia?

---

<div class="post-metadata">

**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [May 22, 2021, 11:57am UTC](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103/20 "2021-05-22T11:57:24Z")

</div>

seems to be working fine! no errors!

```julia
julia> using Cairo_jll
[Info: Precompiling Cairo_jll [83423d85-b0ee-5818-9007-b63ccbeb887a]

```

does this mean I should always start julia like that?  
is there a way to configure this environment variable?

[Next page](https://discourse.julialang.org/t/problems-with-environment-tree-hash-mismatch/60103.md?page=2)