Precompiling an explicit set of packages in REPL does not work

[KristofferC]

(@v1.12) pkg> precompile BenchmarkTools Cthulhu JuliaSyntax
ERROR: MethodError: no method matching precompile(::String, ::String, ::String)
The function `precompile` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  precompile(::Union{AbstractString, Pkg.Types.PackageSpec}; kwargs...)
   @ Pkg ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.12/Pkg/src/API.jl:146
  precompile(::Pkg.Types.Context, ::Vector{Pkg.Types.PackageSpec}; internal_call, strict, warn_loaded, already_instantiated, timing, _from_loading, configs, workspace, kwargs...)
   @ Pkg ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.12/Pkg/src/API.jl:1126
  precompile(; name, uuid, version, url, rev, path, mode, subdir, kwargs...)
   @ Pkg ~/.julia/juliaup/julia-nightly/share/julia/stdlib/v1.12/Pkg/src/API.jl:165

Also seems to happen on 1.11 and 1.10