在 Julia 中添加包的问题

Question

首先，我是 Julia 的新手，所以我还在习惯这种语言。

我正在使用 Jupyter，并且正在尝试添加“SpecialPolynomials”。 这就是我不断得到的：

using Pkg
Pkg.add("SpecialPolynomials")
______________________________________________________________________________________________________________________________________________________________________________________

Resolving package versions...
Unsatisfiable requirements detected for package SpecialFunctions [276daf66]:
 SpecialFunctions [276daf66] log:
 ├─possible versions are: [0.7.0-0.7.2, 0.8.0, 0.9.0, 0.10.0-0.10.3] or uninstalled
 ├─restricted by julia compatibility requirements to versions: [0.7.0-0.7.2, 0.8.0] or uninstalled
 └─restricted by compatibility requirements with SpecialPolynomials [a25cea48] to versions: [0.9.0, 0.10.0-0.10.3] — no versions left
   └─SpecialPolynomials [a25cea48] log:
     ├─possible versions are: 0.1.0 or uninstalled
     └─restricted to versions * by an explicit requirement, leaving only versions 0.1.0

Stacktrace:
 [1] #propagate_constraints!#61(::Bool, ::typeof(Pkg.GraphType.propagate_constraints!), ::Pkg.GraphType.Graph, ::Set{Int64}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\GraphType.jl:1007
 [2] propagate_constraints! at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\GraphType.jl:948 [inlined]
 [3] #simplify_graph!#121(::Bool, ::typeof(Pkg.GraphType.simplify_graph!), ::Pkg.GraphType.Graph, ::Set{Int64}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\GraphType.jl:1462
 [4] simplify_graph! at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\GraphType.jl:1462 [inlined] (repeats 2 times)
 [5] resolve_versions!(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\Operations.jl:317
 [6] #add#100(::Bool, ::typeof(Pkg.Operations.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\Operations.jl:962
 [7] #add at .\none:0 [inlined]
 [8] #add#25(::Bool, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:99
 [9] add at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:69 [inlined]
 [10] #add#24 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:67 [inlined]
 [11] add at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:67 [inlined]
 [12] #add#21 at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:65 [inlined]
 [13] add at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:65 [inlined]
 [14] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(Pkg.API.add), ::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:64
 [15] add(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:64
 [16] top-level scope at In[20]:2

我已经尝试解决我在网上遇到的类似问题。

我尝试删除特殊功能。 我尝试使用 ] gc + enter。 但是这些帖子中的许多都说要在 git 上启动一个问题，任何人都可以看到导致这个问题的原因吗？

Answer 1

您正在运行的 SpecialFunctions/SpecialPolynomials 和 Julia 1.2 没有支持的交叉版本。您应该更新到 Julia 1.4，它（在撰写本文时）是当前受支持的版本。