# Unable to use Zlib\_jll in julia 1.6 (Package Zlib\_jll does not have JLLWrappers in its dependencies)

**URL:** <https://discourse.julialang.org/t/unable-to-use-zlib-jll-in-julia-1-6-package-zlib-jll-does-not-have-jllwrappers-in-its-dependencies/68975>\
**Category:** General Usage\
**Created:** [September 30, 2021, 4:07am UTC](https://discourse.julialang.org/t/unable-to-use-zlib-jll-in-julia-1-6-package-zlib-jll-does-not-have-jllwrappers-in-its-dependencies/68975 "2021-09-30T04:07:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bluesmoon](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bluesmoon/32/327_2.png) [@bluesmoon](https://discourse.julialang.org/u/bluesmoon)\
**Post date:** [September 30, 2021, 4:07am UTC](https://discourse.julialang.org/t/unable-to-use-zlib-jll-in-julia-1-6-package-zlib-jll-does-not-have-jllwrappers-in-its-dependencies/68975/1 "2021-09-30T04:07:48Z")

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I’m using Julia 1.6.3, and I get an error if I try to use `Zlib_jll` or any package that has it as a dependency (eg, `CodecZlib` or `CSV`).

Adding the package has a compile error:

```julia
(v1.6) pkg> activate Foo
  Activating new environment at `~/Foo/Project.toml`

(Foo) pkg> add Zlib_jll
    Updating registry at `~/.julia/registries/General`
   Resolving package versions...
    Updating `~/Foo/Project.toml`
  [83775a58] + Zlib_jll
    Updating `~/Foo/Manifest.toml`
  [8f399da3] + Libdl
  [83775a58] + Zlib_jll
Precompiling project...
  ✗ Zlib_jll
  0 dependencies successfully precompiled in 3 seconds
  1 dependency errored. To see a full report either run `import Pkg; Pkg.precompile()` or load the package

```

Importing the package prints this error:

```julia
julia> import Zlib_jll
[Info: Precompiling Zlib_jll [83775a58-1f1d-513f-b197-d71354ab007a]
ERROR: LoadError: ArgumentError: Package Zlib_jll does not have JLLWrappers in its dependencies:
- If you have Zlib_jll checked out for development and have
  added JLLWrappers as a dependency but haven't updated your primary
  environment's manifest file, try `Pkg.resolve()`.
- Otherwise you may need to report an issue with Zlib_jll
Stacktrace:
 [1] require(into::Module, mod::Symbol)
   @ Base ./loading.jl:906
 [2] include
   @ ./Base.jl:386 [inlined]
 [3] 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:1235
 [4] top-level scope
   @ none:1
 [5] eval
   @ ./boot.jl:360 [inlined]
 [6] eval(x::Expr)
   @ Base.MainInclude ./client.jl:446
 [7] top-level scope
   @ none:1
in expression starting at /home/ubuntu/.julia/packages/Zlib_jll/BGVLi/src/Zlib_jll.jl:2
ERROR: Failed to precompile Zlib_jll [83775a58-1f1d-513f-b197-d71354ab007a] to /home/ubuntu/.julia/compiled/v1.6/Zlib_jll/jl_hY6jJ1.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:33
 [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::Base.TTY, internal_stdout::Base.TTY, ignore_loaded_modules::Bool)
   @ Base ./loading.jl:1385
 [3] compilecache(pkg::Base.PkgId, path::String)
   @ Base ./loading.jl:1329
 [4] _require(pkg::Base.PkgId)
   @ Base ./loading.jl:1043
 [5] require(uuidkey::Base.PkgId)
   @ Base ./loading.jl:936
 [6] require(into::Module, mod::Symbol)
   @ Base ./loading.jl:923

```

I was under the impression that `Zlib_jll` was compiled into julia 1.6, so shouldn’t need to be precompiled. Any idea what’s happening?

_Update_ Similar issue happens with `MozillaCACerts_jll`. I have to remove the existing folder for julia to work.

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<div class="post-metadata">

**Author:** ![bluesmoon](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bluesmoon/32/327_2.png) [@bluesmoon](https://discourse.julialang.org/u/bluesmoon)\
**Post date:** [September 30, 2021, 4:13am UTC](https://discourse.julialang.org/t/unable-to-use-zlib-jll-in-julia-1-6-package-zlib-jll-does-not-have-jllwrappers-in-its-dependencies/68975/2 "2021-09-30T04:13:46Z")

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I think I may have some idea of what’s happening, but don’t understand it fully.  
I recently upgraded from julia 1.5.4, and as a result I still had a `.julia/packages/Zlib_jll/` folder in place. Once I removed this folder, the errors went away.

So, new question - should julia ignore the `packages/` folder if a package is already compiled into the sysimage?

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<div class="post-metadata">

**Author:** ![bernhard](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bernhard/32/2619_2.png) [@bernhard](https://discourse.julialang.org/u/bernhard)\
**Post date:** [September 30, 2021, 6:39am UTC](https://discourse.julialang.org/t/unable-to-use-zlib-jll-in-julia-1-6-package-zlib-jll-does-not-have-jllwrappers-in-its-dependencies/68975/3 "2021-09-30T06:39:26Z")

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I think Julia 1.6 may use different versions of the packages than Julia 1.5 did.  
Have you tried `Pkg.resolve()`, `Pkg.instantiate()` and possibly `Pkg.update()` (e.g. for your Foo packge)?

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<div class="post-metadata">

**Author:** ![bluesmoon](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bluesmoon/32/327_2.png) [@bluesmoon](https://discourse.julialang.org/u/bluesmoon)\
**Post date:** [September 30, 2021, 12:20pm UTC](https://discourse.julialang.org/t/unable-to-use-zlib-jll-in-julia-1-6-package-zlib-jll-does-not-have-jllwrappers-in-its-dependencies/68975/4 "2021-09-30T12:20:25Z")

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Yes, they all have the same problem. As long as there exists a `Zlib_jll` folder under `packages`, julia 1.6 will not work.