Pkg.clone command not being recognized

New to Julia
1

I was trying to install the HiddenMarkovModel.jl package. It is not registered, so the link instructs me to use the clone command. But I am getting this strange error about this command not being valid.

julia> Pkg.clone("https://github.com/ahwillia/HiddenMarkovModel.jl")
ERROR: UndefVarError: clone not defined
Stacktrace:
 [1] getproperty(::Module, ::Symbol) at .\Base.jl:26
 [2] top-level scope at REPL[5]:1
2

The instructions are outdated, and you should use Pkg.add. Note that the first sentence in the README says

Note: There is now a registered package HiddenMarkovModels.jl. This package is no longer maintained (but it still works).

So I suggest you use that instead.

3

Actually there was another problem with the HiddenMarkovModels.jl package, which I reported here.

I used the add command but get a different error now

julia> Pkg.add(url="https://github.com/ahwillia/HiddenMarkovModel.jl")
    Cloning git-repo `https://github.com/ahwillia/HiddenMarkovModel.jl`
   Updating git-repo `https://github.com/ahwillia/HiddenMarkovModel.jl`
ERROR: could not find project file in package at `https://github.com/ahwillia/HiddenMarkovModel.jl` maybe `subdir` needs to be specified
Stacktrace:
 [1] pkgerror(::String, ::Vararg{String,N} where N) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\Types.jl:52
 [2] resolve_projectfile!(::Pkg.Types.Context, ::Pkg.Types.PackageSpec, ::String) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\Types.jl:672
 [3] (::Pkg.Types.var"#49#50"{Pkg.Types.Context,Pkg.Types.PackageSpec})(::LibGit2.GitRepo) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\Types.jl:645
 [4] with(::Pkg.Types.var"#49#50"{Pkg.Types.Context,Pkg.Types.PackageSpec}, ::LibGit2.GitRepo) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\LibGit2\src\types.jl:1128
 [5] handle_repo_add!(::Pkg.Types.Context, ::Pkg.Types.PackageSpec) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\Types.jl:597
 [6] handle_repos_add!(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\Types.jl:663
 [7] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}; preserve::Pkg.Types.PreserveLevel, platform::Pkg.BinaryPlatforms.Windows, kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:168
 [8] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:139
 [9] #add#21 at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:67 [inlined]
 [10] add at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:67 [inlined]
 [11] #add#19 at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:65 [inlined]
 [12] add at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:65 [inlined]
 [13] add(; name::Nothing, uuid::Nothing, version::Nothing, url::String, rev::Nothing, path::Nothing, mode::Pkg.Types.PackageMode, subdir::Nothing, kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\API.jl:82
 [14] top-level scope at REPL[7]:1
4

The package is not maintained or actively developed – thus it is outdated and doesn’t work. It is missing the Project.toml file which was introduced for packages during I believe the Julia 1.0 transition. To add it in a newer version of Julia you need to update the package yourself.

5

It was latest updated six years ago and the REQUIRE file mentions Julia 0.3 so you might have a chance to run it with Julia 0.3, but that version is ancient so there isn’t really much point today unless you want to pursue archaeology.

6

I see.