# Issues install Coluna.jl oj Julia 1.1

**URL:** https://discourse.julialang.org/t/issues-install-coluna-jl-oj-julia-1-1/26298
**Category:** Optimization (Mathematical)
**Created:** [July 12, 2019, 6:56pm UTC](https://discourse.julialang.org/t/issues-install-coluna-jl-oj-julia-1-1/26298 "2019-07-12T18:56:10Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![rakesh\_gupta](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rakesh_gupta/32/9303_2.png) [@rakesh\_gupta](https://discourse.julialang.org/u/rakesh_gupta)
#### Post date: [July 12, 2019, 6:56pm UTC](https://discourse.julialang.org/t/issues-install-coluna-jl-oj-julia-1-1/26298/1 "2019-07-12T18:56:10Z")

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Hi - I am having a lot of trouble installing Coluna.jl on the 1.04 version of Julia. The command I am using is:

add [GitHub - atoptima/Coluna.jl: Branch-and-Price-and-Cut in Julia](https://github.com/atoptima/Coluna.jl.git)

Which should ostensibly work out of the box ? The error I get is:

(v1.0) pkg\> add [GitHub - atoptima/Coluna.jl: Branch-and-Price-and-Cut in Julia](https://github.com/atoptima/Coluna.jl.git)  
Updating git-repo `https://github.com/atoptima/Coluna.jl.git`  
Resolving package versions…  
ERROR: Unsatisfiable requirements detected for package BlockDecomposition [6cde  
614]:  
BlockDecomposition [6cde8614] log:  
├─BlockDecomposition [6cde8614] has no known versions!  
└─restricted to versions \* by Coluna [88b4ec78] - no versions left  
└─Coluna [88b4ec78] log:  
├─possible versions are: 0.1.0 or uninstalled  
└─Coluna [88b4ec78] is fixed to version 0.1.0

(v1.0) pkg\>

Which primarily seems related to BlockDecomposition - which I cannot install as well.

Any help would be appreciated …

Thx

Rakesh

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### Author: ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)
#### Post date: [July 12, 2019, 10:59pm UTC](https://discourse.julialang.org/t/issues-install-coluna-jl-oj-julia-1-1/26298/2 "2019-07-12T22:59:59Z")

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Hi @rakesh_gupta,

It looks like `BlockDecomposition` isn’t registered. Try

```nohighlight
] add https://github.com/atoptima/BlockDecomposition.jl
] add https://github.com/atoptima/Coluna.jl

```

If it doesn’t work, you should consider opening an issue at Coluna.jl: [Issues · atoptima/Coluna.jl · GitHub](https://github.com/atoptima/Coluna.jl/issues)

cc @IssamT