KeyError raised while trying to install the Reactant.jl package.

[WG-ZHENG]

My julia version is v1.10.4. I met a KeyError: key "LLVM" not found.
Is there anything to do with the compatibility between the versions of julia and Reactant.jl? I'm confused.

[giordano]

Can you please post full error message including the entire stacktrace? It's impossible to know where the error message is coming from without this information. Using the latest version of Julia in the v1.10 (or even the v1.11 series if you're happy to upgrade minor version) would be better in any case though.

[WG-ZHENG]

Can you please post full error message including the entire stacktrace? It's impossible to know where the error message is coming from without this information. Using the latest version of Julia in the v1.10 (or even the v1.11 series if you're happy to upgrade minor version) would be better in any case though.

Here is the error message from the julia REPL:

[giordano]

Please copy paste the error as text, using block quote

```
like this
```

don't post screenshots, they aren't searchable. Also, that's still very incomplete, doesn't include the full stacktrace I asked above.

[WG-ZHENG]

Like this?

(env) pkg> add Reactant.jl
   Resolving package versions...
    Updating `E:\PROJECT\Code\UQ\env\Project.toml`
ERROR: KeyError: key "LLVM" not found
Stacktrace:
  [1] getindex
    @ .\dict.jl:498 [inlined]
  [2] status_ext_info(pkg::Pkg.Types.PackageSpec, env::Pkg.Types.EnvCache)
    @ Pkg.Operations E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:2214
  [3] print_status(env::Pkg.Types.EnvCache, old_env::Pkg.Types.EnvCache, registries::Vector{Pkg.Registry.RegistryInstance}, header::Symbol, uuids::Vector{Base.UUID}, names::Vector{String}; manifest::Bool, diff::Bool, ignore_indent::Bool, outdated::Bool, extensions::Bool, io::Base.TTY, mode::Pkg.Types.PackageMode, hidden_upgrades_info::Bool, show_usagetips::Bool)
    @ Pkg.Operations E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:2299
  [4] print_status
    @ E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:2241 [inlined]
  [5] status(env::Pkg.Types.EnvCache, registries::Vector{Pkg.Registry.RegistryInstance}, pkgs::Vector{Pkg.Types.PackageSpec}; header::Symbol, mode::Pkg.Types.PackageMode, git_diff::Bool, env_diff::Pkg.Types.EnvCache, ignore_indent::Bool, io::Base.TTY, outdated::Bool, extensions::Bool, hidden_upgrades_info::Bool, show_usagetips::Bool)
    @ Pkg.Operations E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:2472
  [6] status (repeats 2 times)
    @ E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:2443 [inlined]
  [7] #show_update#167
    @ E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:2439 [inlined]
  [8] add(ctx::Pkg.Types.Context, pkgs::Vector{Pkg.Types.PackageSpec}, new_git::Set{Base.UUID}; preserve::Pkg.Types.PreserveLevel, platform::Base.BinaryPlatforms.Platform)
    @ Pkg.Operations E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:1398
  [9] add
    @ E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\Operations.jl:1377 [inlined]
 [10] add(ctx::Pkg.Types.Context, pkgs::Vector{Pkg.Types.PackageSpec}; preserve::Pkg.Types.PreserveLevel, platform::Base.BinaryPlatforms.Platform, kwargs::@Kwargs{io::Base.TTY})
    @ Pkg.API E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\API.jl:278
 [11] add(pkgs::Vector{Pkg.Types.PackageSpec}; io::Base.TTY, kwargs::@Kwargs{})
    @ Pkg.API E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\API.jl:159
 [12] add(pkgs::Vector{Pkg.Types.PackageSpec})
    @ Pkg.API E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\API.jl:148
 [13] do_cmd!(command::Pkg.REPLMode.Command, repl::REPL.LineEditREPL)
    @ Pkg.REPLMode E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\REPLMode\REPLMode.jl:412
 [14] do_cmd(repl::REPL.LineEditREPL, input::String; do_rethrow::Bool)
    @ Pkg.REPLMode E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\REPLMode\REPLMode.jl:390
 [15] do_cmd
    @ E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\REPLMode\REPLMode.jl:380 [inlined]
 [16] (::Pkg.REPLMode.var"#24#27"{REPL.LineEditREPL, REPL.LineEdit.Prompt})(s::REPL.LineEdit.MIState, buf::IOBuffer, ok::Bool)
    @ Pkg.REPLMode E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\Pkg\src\REPLMode\REPLMode.jl:557
 [17] #invokelatest#2
    @ .\essentials.jl:892 [inlined]
 [18] invokelatest
    @ .\essentials.jl:889 [inlined]
 [19] run_interface(terminal::REPL.Terminals.TextTerminal, m::REPL.LineEdit.ModalInterface, s::REPL.LineEdit.MIState)
    @ REPL.LineEdit E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\REPL\src\LineEdit.jl:2656
 [20] run_frontend(repl::REPL.LineEditREPL, backend::REPL.REPLBackendRef)
    @ REPL E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\REPL\src\REPL.jl:1312
 [21] (::REPL.var"#62#68"{REPL.LineEditREPL, REPL.REPLBackendRef})()
    @ REPL E:\Softwares\Julia\Program Files\Julia-1.10.4\share\julia\stdlib\v1.10\REPL\src\REPL.jl:386

[giordano]

Almost, I edited your message to fix formatting. But yes, the stacktrace is more important part, it tells you where the error is coming from. I must say I don't have an idea at a quick glance of what's going on. I'd still advise upgrading to a newer Julia version, I seem to remember there were known issues for Reactant in v1.10.4, so even if you managed to install the package you may have miscompilations.

[WG-ZHENG]

Thank you for your patience.
I will try to upgrade.

[WG-ZHENG]

The problem has been solved by upgrading.
Thanks again.