# Pkg update results in Unsatifiable requirements detected

**URL:** https://discourse.julialang.org/t/pkg-update-results-in-unsatifiable-requirements-detected/50525
**Category:** General Usage
**Tags:** package
**Created:** [November 21, 2020, 5:58am UTC](https://discourse.julialang.org/t/pkg-update-results-in-unsatifiable-requirements-detected/50525 "2020-11-21T05:58:55Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Phil\_Tomson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/phil_tomson/32/3575_2.png) [@Phil\_Tomson](https://discourse.julialang.org/u/Phil_Tomson)
#### Post date: [November 21, 2020, 5:58am UTC](https://discourse.julialang.org/t/pkg-update-results-in-unsatifiable-requirements-detected/50525/1 "2020-11-21T05:58:55Z")

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It had been a while since I did a pkg update. I did one today and got:

> ERROR: Unsatisfiable requirements detected for package CuArrays [3a865a2d]:  
> CuArrays [3a865a2d] log:  
> ├─possible versions are: [0.2.1, 0.3.0, 0.4.0, 0.5.0, 0.6.0-0.6.2, 0.7.0-0.7.3, 0.8.0-0.8.1, 0.9.0-0.9.1, 1.0.0-1.0.2, 1.1.0, 1.2.0-1.2.1, 1.3.0, 1.4.0-1.4.7, 1.5.0, 1.6.0, 1.7.0-1.7.3, 2.0.0-2.0.1, 2.1.0, 2.2.0-2.2.2] or uninstalled  
> ├─restricted by compatibility requirements with Requires [ae029012] to versions: [0.2.1, 0.3.0, 0.4.0, 0.5.0, 0.6.0-0.6.2, 0.7.0-0.7.3, 0.8.0-0.8.1, 0.9.0-0.9.1, 1.0.0-1.0.1, 1.6.0, 1.7.0-1.7.3, 2.0.0-2.0.1, 2.1.0, 2.2.0-2.2.2] or uninstalled  
> │ └─Requires [ae029012] log:  
> │ ├─possible versions are: [0.5.0-0.5.2, 1.0.0-1.0.3, 1.1.0-1.1.1] or uninstalled  
> │ ├─restricted to versions \* by Gym [56b9baea], leaving only versions [0.5.0-0.5.2, 1.0.0-1.0.3, 1.1.0-1.1.1]  
> │ │ └─Gym [56b9baea] log:  
> │ │ ├─possible versions are: 0.1.0 or uninstalled  
> │ │ └─Gym [56b9baea] is fixed to version 0.1.0  
> │ └─restricted by compatibility requirements with Torch [6a2ea274] to versions: [1.0.0-1.0.3, 1.1.0-1.1.1]  
> │ └─Torch [6a2ea274] log:  
> │ ├─possible versions are: 0.1.0-0.1.2 or uninstalled  
> │ └─restricted to versions \* by an explicit requirement, leaving only versions 0.1.0-0.1.2  
> ├─restricted by compatibility requirements with GPUArrays [0c68f7d7] to versions: [0.2.1, 2.0.0-2.0.1, 2.1.0, 2.2.0-2.2.2] or uninstalled  
> │ └─GPUArrays [0c68f7d7] log:  
> │ ├─possible versions are: [0.3.0-0.3.4, 0.4.0-0.4.2, 0.5.0, 0.6.0-0.6.1, 0.7.0-0.7.2, 1.0.0-1.0.4, 2.0.0-2.0.1, 3.0.0-3.0.1, 3.1.0, 3.2.0, 3.3.0, 3.4.0-3.4.1, 4.0.0-4.0.1, 5.0.0, 5.1.0, 5.2.0-5.2.1, 6.0.0-6.0.1, 6.1.0-6.1.2] or uninstalled  
> │ ├─restricted by compatibility requirements with CUDA [052768ef] to versions: [3.4.0-3.4.1, 4.0.0-4.0.1, 5.0.0, 5.1.0, 5.2.0-5.2.1, 6.0.1, 6.1.0-6.1.2]  
> │ │ └─CUDA [052768ef] log:  
> │ │ ├─possible versions are: [0.1.0, 1.0.0-1.0.2, 1.1.0, 1.2.0-1.2.1, 1.3.0-1.3.3, 2.0.0-2.0.2, 2.1.0, 2.2.0-2.2.1, 2.3.0] or uninstalled  
> │ │ ├─restricted to versions \* by an explicit requirement, leaving only versions [0.1.0, 1.0.0-1.0.2, 1.1.0, 1.2.0-1.2.1, 1.3.0-1.3.3, 2.0.0-2.0.2, 2.1.0, 2.2.0-2.2.1, 2.3.0]  
> │ │ └─restricted by julia compatibility requirements to versions: [0.1.0, 1.0.0-1.0.2, 1.1.0, 1.2.0-1.2.1, 1.3.0-1.3.3] or uninstalled, leaving only versions: [0.1.0, 1.0.0-1.0.2, 1.1.0, 1.2.0-1.2.1, 1.3.0-1.3.3]  
> │ └─restricted by julia compatibility requirements to versions: [0.3.0-0.3.4, 0.4.0-0.4.2, 0.5.0, 0.6.0-0.6.1, 0.7.0-0.7.2, 1.0.0-1.0.4, 2.0.0-2.0.1, 3.0.0-3.0.1, 3.1.0, 3.2.0, 3.3.0, 3.4.0-3.4.1, 4.0.0-4.0.1, 5.0.0, 5.1.0, 5.2.0-5.2.1] or uninstalled, leaving only versions: [3.4.0-3.4.1, 4.0.0-4.0.1, 5.0.0, 5.1.0, 5.2.0-5.2.1]  
> ├─restricted by compatibility requirements with Flux [587475ba] to versions: [2.0.0-2.0.1, 2.1.0, 2.2.0-2.2.2]  
> │ └─Flux [587475ba] log:  
> │ ├─possible versions are: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0, 0.10.0-0.10.4, 0.11.0-0.11.2] or uninstalled  
> │ ├─restricted to versions \* by Gym [56b9baea], leaving only versions [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0, 0.10.0-0.10.4, 0.11.0-0.11.2]  
> │ │ └─Gym [56b9baea] log: see above  
> │ ├─restricted by julia compatibility requirements to versions: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0, 0.10.0-0.10.4, 0.11.0-0.11.1] or uninstalled, leaving only versions: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.9.0, 0.10.0-0.10.4, 0.11.0-0.11.1]  
> │ ├─restricted by compatibility requirements with Requires [ae029012] to versions: [0.8.3, 0.9.0, 0.10.0-0.10.4, 0.11.0-0.11.2] or uninstalled, leaving only versions: [0.8.3, 0.9.0, 0.10.0-0.10.4, 0.11.0-0.11.1]  
> │ │ └─Requires [ae029012] log: see above  
> │ ├─restricted by compatibility requirements with RayTracer [60dacb86] to versions: [0.9.0, 0.10.0-0.10.4]  
> │ │ └─RayTracer [60dacb86] log:  
> │ │ ├─possible versions are: 0.1.0-0.1.3 or uninstalled  
> │ │ ├─restricted to versions \* by an explicit requirement, leaving only versions 0.1.0-0.1.3  
> │ │ └─restricted by compatibility requirements with Flux [587475ba] to versions: 0.1.2-0.1.3 or uninstalled, leaving only versions: 0.1.2-0.1.3  
> │ │ └─Flux [587475ba] log: see above  
> │ └─restricted by compatibility requirements with CuArrays [3a865a2d] to versions: [0.4.1, 0.5.0-0.5.4, 0.6.0-0.6.10, 0.7.0-0.7.3, 0.8.0-0.8.3, 0.10.4, 0.11.0-0.11.2] or uninstalled, leaving only versions: 0.10.4  
> │ └─CuArrays [3a865a2d] log: see above  
> └─restricted by compatibility requirements with Transformers [21ca0261] to versions: [0.2.1, 0.3.0, 0.4.0, 0.5.0, 0.6.0-0.6.2, 0.7.0-0.7.3, 0.8.0-0.8.1, 0.9.0-0.9.1, 1.0.0-1.0.2, 1.1.0, 1.2.0-1.2.1, 1.3.0, 1.4.0-1.4.7, 1.5.0, 1.6.0, 1.7.0-1.7.3] — no versions left  
> └─Transformers [21ca0261] log:  
> ├─possible versions are: [0.0.1-0.0.3, 0.0.6-0.0.9, 0.1.0-0.1.7] or uninstalled  
> ├─restricted to versions \* by an explicit requirement, leaving only versions [0.0.1-0.0.3, 0.0.6-0.0.9, 0.1.0-0.1.7]  
> ├─restricted by compatibility requirements with Requires [ae029012] to versions: [0.0.1-0.0.3, 0.1.4-0.1.7] or uninstalled, leaving only versions: [0.0.1-0.0.3, 0.1.4-0.1.7]  
> │ └─Requires [ae029012] log: see above  
> ├─restricted by compatibility requirements with CuArrays [3a865a2d] to versions: [0.0.3, 0.0.6-0.0.9, 0.1.0-0.1.1, 0.1.4-0.1.7] or uninstalled, leaving only versions: [0.0.3, 0.1.4-0.1.7]  
> │ └─CuArrays [3a865a2d] log: see above  
> └─restricted by compatibility requirements with Flux [587475ba] to versions: [0.0.1-0.0.3, 0.0.6-0.0.9, 0.1.0-0.1.3] or uninstalled, leaving only versions: 0.0.3  
> └─Flux [587475ba] log: see above

How do you fix this kind of situation? Do I have to remove all packages and just start over again?

---

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### Author: ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)
#### Post date: [November 21, 2020, 4:22pm UTC](https://discourse.julialang.org/t/pkg-update-results-in-unsatifiable-requirements-detected/50525/2 "2020-11-21T16:22:00Z")

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Remove `CuArrays`. It was deprecated for `CUDA`.