IJulia install error (after installing Juno Atom IDE)

New to Julia
1

I installed Julia Version 1.1.0 (2019-01-21). Subsequently I installed Julia packages for Atom (including atom-julia-client).

Now, I try to install IJulia. However I get:

julia> Pkg.add(“IJulia”)
Updating registry at C:\Users\Erwin\.julia\registries\General
Updating git-repo https://github.com/JuliaRegistries/General.git
Resolving package versions…
ERROR: Unsatisfiable requirements detected for package ASTInterpreter2 [e6d88f4b]:
ASTInterpreter2 [e6d88f4b] log:
├─possible versions are: 0.1.0-0.1.1 or uninstalled
├─restricted by julia compatibility requirements to versions: uninstalled
└─restricted by compatibility requirements with Atom [c52e3926] to versions: 0.1.0-0.1.1 — no versions left
└─Atom [c52e3926] log:
├─possible versions are: [0.1.0-0.1.1, 0.2.0-0.2.1, 0.3.0, 0.4.0-0.4.6, 0.5.0-0.5.10, 0.6.0-0.6.17, 0.7.0-0.7.15, 0.8.0-0.8.3] or uninstalled
└─restricted to versions 0.7.15 by an explicit requirement, leaving only versions 0.7.15
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\v1.1\Pkg\src\GraphType.jl:1005
[2] propagate_constraints! at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\GraphType.jl:946 [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\v1.1\Pkg\src\GraphType.jl:1460
[4] simplify_graph! at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\GraphType.jl:1460 [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\v1.1\Pkg\src\Operations.jl:371
[6] resolve_versions! at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\Operations.jl:315 [inlined]
[7] #add_or_develop#63(::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\v1.1\Pkg\src\Operations.jl:1171
[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\v1.1\Pkg\src\API.jl:54
[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\v1.1\Pkg\src\API.jl:31 [inlined]
[12] #add_or_develop at .\none:0 [inlined]
[13] #add_or_develop#13 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\API.jl:29 [inlined]
[14] #add_or_develop at .\none:0 [inlined]
[15] #add_or_develop#12(::Base.Iterators.Pairs{Symbol,Symbol,Tuple{Symbol},NamedTuple{(:mode,),Tuple{Symbol}}}, ::Function, ::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\API.jl:28
[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\v1.1\Pkg\src\API.jl:59 [inlined]
[18] add(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\API.jl:59
[19] top-level scope at none:0

I see there is some versioning problem, but I am not sure how to proceed. Any suggestions are much appreciated.

Thanks, Erwin

2

OK solved after Pkg.update(). This was not obvious to me.