# ERROR: Unsatisfiable requirements detected for package LinQuadOptInterface \[f8899e07\]:
**URL:** https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-linquadoptinterface-f8899e07/29182
**Category:** General Usage
**Tags:** question, package
**Created:** [September 26, 2019, 3:40am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-linquadoptinterface-f8899e07/29182 "2019-09-26T03:40:09Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@wain229](https://discourse.julialang.org/u/wain229)
#### Post date: [September 26, 2019, 3:40am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-linquadoptinterface-f8899e07/29182/1 "2019-09-26T03:40:09Z")
I was trying to add the Clp package today, but the below error happened. I was using the Julia version 1.0.4. Any one can help me? Thanks
julia\> import Pkg
julia\> Pkg.add(“Clp”)
Updating registry at `C:\Users\pqwa001\.julia\registries\General`
Updating git-repo `https://github.com/JuliaRegistries/General.git`
Resolving package versions…
ERROR: Unsatisfiable requirements detected for package LinQuadOptInterface [f8899e07]:
LinQuadOptInterface [f8899e07] log:
├─possible versions are: [0.1.0, 0.2.0, 0.3.0-0.3.1, 0.4.0-0.4.3, 0.5.0, 0.6.0] or uninstalled
├─restricted by julia compatibility requirements to versions: [0.3.0-0.3.1, 0.4.0-0.4.3, 0.5.0, 0.6.0] or uninstalled
├─restricted by compatibility requirements with MathOptInterface [b8f27783] to versions: uninstalled
│ └─MathOptInterface [b8f27783] log:
│ ├─possible versions are: [0.1.0, 0.2.0, 0.3.0, 0.4.0-0.4.1, 0.5.0-0.5.1, 0.6.0-0.6.4, 0.7.0, 0.8.0-0.8.4, 0.9.0-0.9.3] or uninstalled
│ └─restricted by compatibility requirements with GLPK [60bf3e95] to versions: 0.9.1-0.9.3
│ └─GLPK [60bf3e95] log:
│ ├─possible versions are: [0.2.7-0.2.17, 0.3.0, 0.4.0-0.4.2, 0.5.0-0.5.1, 0.6.0-0.6.1, 0.7.0, 0.8.0-0.8.3, 0.9.0-0.9.1, 0.10.0, 0.11.0-0.11.4] or uninstalled
│ └─restricted to versions 0.11.4 by an explicit requirement, leaving only versions 0.11.4
└─restricted by compatibility requirements with Clp [e2554f3b] to versions: [0.4.0-0.4.3, 0.6.0] — no versions left
└─Clp [e2554f3b] log:
├─possible versions are: [0.0.5-0.0.10, 0.1.0-0.1.1, 0.2.0-0.2.2, 0.3.0-0.3.1, 0.4.0, 0.5.0-0.5.1, 0.6.0-0.6.2] or uninstalled
├─restricted to versions \* by an explicit requirement, leaving only versions [0.0.5-0.0.10, 0.1.0-0.1.1, 0.2.0-0.2.2, 0.3.0-0.3.1, 0.4.0, 0.5.0-0.5.1, 0.6.0-0.6.2]
└─restricted by julia compatibility requirements to versions: [0.5.0-0.5.1, 0.6.0-0.6.2] or uninstalled, leaving only versions: [0.5.0-0.5.1, 0.6.0-0.6.2]
Stacktrace:
[1] #propagate\_constraints!#61(::Bool, ::Function, ::Pkg.GraphType.Graph, ::Set{Int64}) at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\GraphType.jl:1007
[2] propagate\_constraints! at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\GraphType.jl:948 [inlined]
[3] #simplify\_graph!#121(::Bool, ::Function, ::Pkg.GraphType.Graph, ::Set{Int64}) at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\GraphType.jl:1462
[4] simplify\_graph! at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\GraphType.jl:1462 [inlined]
[5] resolve\_versions!(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Nothing) at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Operations.jl:373
[6] resolve\_versions! at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Operations.jl:316 [inlined]
[7] #add\_or\_develop#62(::Array{Base.UUID,1}, ::Symbol, ::Function, ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Operations.jl:1201
[8] #add\_or\_develop at .\none:0 [inlined]
[9] #add\_or\_develop#15(::Symbol, ::Bool, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:69
[10] #add\_or\_develop at .\none:0 [inlined]
[11] #add\_or\_develop#14 at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:34 [inlined]
[12] #add\_or\_develop at .\none:0 [inlined]
[13] #add\_or\_develop#11 at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:33 [inlined]
[14] #add\_or\_develop at .\none:0 [inlined]
[15] #add\_or\_develop#10 at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:32 [inlined]
[16] #add\_or\_develop at .\none:0 [inlined]
[17] #add#20 at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:74 [inlined]
[18] add(::String) at C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\API.jl:74
[19] top-level scope at none:0
---
### Author:  [@Mattriks](https://discourse.julialang.org/u/Mattriks)
#### Post date: [September 26, 2019, 3:54am UTC](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-package-linquadoptinterface-f8899e07/29182/2 "2019-09-26T03:54:27Z")
> [@"ERROR: Unsatisfiable requirements detected for..." how to understand this?](https://discourse.julialang.org/t/error-unsatisfiable-requirements-detected-for-how-to-understand-this/24158/2):
>
> Welcome to the julia discourse forum! Here are some other posts with the same q: [https://discourse.julialang.org/search?q=unsatisfiable%20requirements%20order%3Alatest](https://discourse.julialang.org/search?q=unsatisfiable%20requirements%20order%3Alatest) and there is a general explanation here: So try add Distributions@0.18 then add Expectations