# ERROR: Unsatisfiable requirements detected for package Cpp \[2859d429\]

**URL:** <https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-cpp-2859d429/25914>\
**Category:** General Usage\
**Created:** [July 2, 2019, 8:19am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-cpp-2859d429/25914 "2019-07-02T08:19:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Volker](https://avatars.discourse-cdn.com/v4/letter/v/77aa72/32.png) [@Volker](https://discourse.julialang.org/u/Volker)\
**Post date:** [July 2, 2019, 8:19am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-cpp-2859d429/25914/1 "2019-07-02T08:19:34Z")

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Hi,

I would like to use the package Cpp, but when I tried to add it via the package manager I got the following error. Does somebody know what I´m doing wrong?

First I tried `julia Pkg.add("Cpp") and then I tried `julia (v1.1) pkg\> add Cpp@0.1.0 ```, but both commands are leading to the following error.

Resolving package versions…  
ERROR: Unsatisfiable requirements detected for package Cpp [2859d429]:  
Cpp [2859d429] log:  
├─possible versions are: [0.0.1-0.0.5, 0.1.0] or uninstalled  
├─restricted to versions 0.1.0 by an explicit requirement, leaving only versions 0.1.0  
└─restricted by julia compatibility requirements to versions: uninstalled — no versions left

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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:** [July 2, 2019, 8:30am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-cpp-2859d429/25914/2 "2019-07-02T08:30:49Z")

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They key here is: `restricted by julia compatibility` which means that the package has no versions that support Julia 1.0.

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<div class="post-metadata">

**Author:** ![Volker](https://avatars.discourse-cdn.com/v4/letter/v/77aa72/32.png) [@Volker](https://discourse.julialang.org/u/Volker)\
**Post date:** [July 2, 2019, 8:37am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-cpp-2859d429/25914/3 "2019-07-02T08:37:11Z")

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Okay, thanks. I could not extract this information from the log. How I could do this?