# Pkg installation error

**URL:** <https://discourse.julialang.org/t/pkg-installation-error/3407>\
**Category:** General Usage\
**Tags:** package\
**Created:** [April 27, 2017, 5:25pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407 "2017-04-27T17:25:30Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![davidzentlermunro](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/davidzentlermunro/32/5967_2.png) [@davidzentlermunro](https://discourse.julialang.org/u/davidzentlermunro)\
**Post date:** [April 27, 2017, 5:25pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/1 "2017-04-27T17:25:30Z")

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I’ve been having the following error with installing NLopt, and have been advised this is an issue with julia rather than the package:

[https://github.com/JuliaOpt/NLopt.jl/issues/77#issuecomment-297778775](https://github.com/JuliaOpt/NLopt.jl/issues/77#issuecomment-297778775)

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**Author:** ![rdeits](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rdeits/32/286_2.png) [@rdeits](https://discourse.julialang.org/u/rdeits)\
**Post date:** [April 27, 2017, 5:30pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/2 "2017-04-27T17:30:58Z")

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I’m pretty sure this is a github problem, not a Julia issue, since we also had problems with a non-Julia project that was building NLOpt today. Can you try again?

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**Author:** ![davidzentlermunro](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/davidzentlermunro/32/5967_2.png) [@davidzentlermunro](https://discourse.julialang.org/u/davidzentlermunro)\
**Post date:** [May 5, 2017, 1:14pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/3 "2017-05-05T13:14:26Z")

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Tried again - same thing.

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**Author:** ![davidzentlermunro](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/davidzentlermunro/32/5967_2.png) [@davidzentlermunro](https://discourse.julialang.org/u/davidzentlermunro)\
**Post date:** [May 9, 2017, 11:20am UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/4 "2017-05-09T11:20:22Z")

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Any suggestions for how to solve? I’m still not having any joy.

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**Author:** ![rdeits](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rdeits/32/286_2.png) [@rdeits](https://discourse.julialang.org/u/rdeits)\
**Post date:** [May 9, 2017, 1:38pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/5 "2017-05-09T13:38:23Z")

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I’m pretty sure the github issues were resolved, so I don’t know why this would still be happening.

Did you try `Pkg.update()`?

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**Author:** ![goedman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/goedman/32/217_2.png) [@goedman](https://discourse.julialang.org/u/goedman)\
**Post date:** [May 9, 2017, 2:16pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/6 "2017-05-09T14:16:51Z")

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On Julia 0.5.1. it is still regularly occurring, in my case around either imaging or DifferentialEquations. I believe some additional Pkg resolver bug fixes need to be backported as part of a Julia 0.5.2 release.

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**Author:** ![rdeits](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rdeits/32/286_2.png) [@rdeits](https://discourse.julialang.org/u/rdeits)\
**Post date:** [May 9, 2017, 3:36pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/7 "2017-05-09T15:36:04Z")

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@goedman do you mean specifically NLOpt? I’ve seen the other issues about “no feasible version” with the package resolver, but I think this issue is different (it’s specifically about not being able to find the NLopt github repo).

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**Author:** ![goedman](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/goedman/32/217_2.png) [@goedman](https://discourse.julialang.org/u/goedman)\
**Post date:** [May 9, 2017, 3:53pm UTC](https://discourse.julialang.org/t/pkg-installation-error/3407/8 "2017-05-09T15:53:25Z")

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@rdeits , apologies, yes, this seems a different problem.