# HTTP.jl no longer precompiling on Julia v1.6 (i.e. master)

**URL:** <https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028>\
**Category:** General Usage\
**Created:** [September 21, 2020, 5:23pm UTC](https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028 "2020-09-21T17:23:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![ScottPJones](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/scottpjones/32/146_2.png) [@ScottPJones](https://discourse.julialang.org/u/ScottPJones)\
**Post date:** [September 21, 2020, 5:23pm UTC](https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028/1 "2020-09-21T17:23:26Z")

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Sometime within the last week or two, it seems that HTTP.jl will no longer precompile on a recently built Julia.  
`julia> using HTTP [Info: Precompiling HTTP [cd3eb016-35fb-5094-929b-558a96fad6f3] ERROR: LoadError: LoadError: UndefVarError: libmbedtls not defined Stacktrace: [1] MbedTLS.SSLConfig() @ MbedTLS ~/.julia/packages/MbedTLS/VbsaQ/src/ssl.jl:18 [2] top-level scope @ ~/.julia/packages/HTTP/IAI92/src/ConnectionPool.jl:661 `

Does anybody know of a work-around / fix for this?  
It breaks soooooo many things (such as wonderful Pluto.jl!)

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**Author:** ![fredrikekre](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fredrikekre/32/1688_2.png) [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Post date:** [September 21, 2020, 8:15pm UTC](https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028/2 "2020-09-21T20:15:50Z")

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Works for me:

```bash
$ git show --pretty=format:"%H" --no-patch
5f55b977e439ab7b0d09dd826732ff5ea3f1098f

$ export JULIA_LOAD_PATH=$(mktemp -d)/Project.toml

$ pkg add HTTP &> /dev/null && pkg st && julia -e 'using HTTP'
Status `/tmp/tmp.kp10qcwpoK/Project.toml`
  [cd3eb016] HTTP v0.8.19

```

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**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:** [September 21, 2020, 10:01pm UTC](https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028/3 "2020-09-21T22:01:34Z")

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JLL packages for macOS with Julia nightly are currently broken: [https://github.com/JuliaPackaging/BinaryBuilder.jl/issues/913](https://github.com/JuliaPackaging/BinaryBuilder.jl/issues/913). Other platforms are fine and most importantly all stable Julia versions are totally fine.

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<div class="post-metadata">

**Author:** ![ScottPJones](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/scottpjones/32/146_2.png) [@ScottPJones](https://discourse.julialang.org/u/ScottPJones)\
**Post date:** [September 22, 2020, 2:34pm UTC](https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028/4 "2020-09-22T14:34:22Z")

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On v1.6 (a recent build out of master)?

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<div class="post-metadata">

**Author:** ![fredrikekre](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fredrikekre/32/1688_2.png) [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Post date:** [September 22, 2020, 4:10pm UTC](https://discourse.julialang.org/t/http-jl-no-longer-precompiling-on-julia-v1-6-i-e-master/47028/5 "2020-09-22T16:10:24Z")

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> [@ScottPJones](#):
>
> On v1.6 (a recent build out of master)?

> [@fredrikekre](#):
>
> ```julia
> $ git show --pretty=format:"%H" --no-patch
> 5f55b977e439ab7b0d09dd826732ff5ea3f1098f
> 
> ```

But looks like it is a macOS problem as suggested by Mosè.