"add IJulia" with a juliaup-installed Julia 1.9.4 and 1.10.2 do not install Julia kernel specs for Jupyter

[prehensilecode]

Have installed Julia both 1.9.4 and 1.10.2 using juliaup on macOS Sonoma 14.4:

❯ juliaup status
 Default  Channel  Version                      Update
-------------------------------------------------------
          1.9.4    1.9.4+0.x64.apple.darwin14
       *  release  1.10.2+0.x64.apple.darwin14

Jupyter already installed:

❯ which jupyter
/Volumes/Homes/Users/myname/Venvs/general/bin/jupyter
❯ jupyter --version
Selected Jupyter core packages...
IPython          : 8.22.2
ipykernel        : 6.29.3
ipywidgets       : 8.1.2
jupyter_client   : 8.6.1
jupyter_core     : 5.7.2
jupyter_server   : 2.13.0
jupyterlab       : 4.1.5
nbclient         : 0.10.0
nbconvert        : 7.16.2
nbformat         : 5.10.3
notebook         : 7.1.2
qtconsole        : not installed
traitlets        : 5.14.1

Installed IJulia the usual way:

$ julia +1.9.4
...
julia> versioninfo()
Julia Version 1.9.4
Commit 8e5136fa297 (2023-11-14 08:46 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: macOS (x86_64-apple-darwin22.4.0)
  CPU: 8 × Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-14.0.6 (ORCJIT, skylake)
  Threads: 1 on 8 virtual cores
julia> ]
(@v1.9) pkg> add IJulia
   Resolving package versions...
    Updating `~/.julia/environments/v1.9/Project.toml`
  [7073ff75] + IJulia v1.24.2
    Updating `~/.julia/environments/v1.9/Manifest.toml`
  [8f4d0f93] + Conda v1.10.0
  [7073ff75] + IJulia v1.24.2
  [692b3bcd] + JLLWrappers v1.5.0
  [682c06a0] + JSON v0.21.4
  [739be429] + MbedTLS v1.1.9
  [69de0a69] + Parsers v2.8.1
  [aea7be01] + PrecompileTools v1.2.1
  [21216c6a] + Preferences v1.4.3
  [b85f4697] + SoftGlobalScope v1.1.0
  [81def892] + VersionParsing v1.3.0
  [c2297ded] + ZMQ v1.2.2
  [8f1865be] + ZeroMQ_jll v4.3.5+0
  [a9144af2] + libsodium_jll v1.0.20+0
  [0dad84c5] + ArgTools v1.1.1
  [56f22d72] + Artifacts
  [2a0f44e3] + Base64
  [ade2ca70] + Dates
  [f43a241f] + Downloads v1.6.0
  [7b1f6079] + FileWatching
  [b77e0a4c] + InteractiveUtils
  [b27032c2] + LibCURL v0.6.4
  [76f85450] + LibGit2
  [8f399da3] + Libdl
  [56ddb016] + Logging
  [d6f4376e] + Markdown
  [a63ad114] + Mmap
  [ca575930] + NetworkOptions v1.2.0
  [44cfe95a] + Pkg v1.9.2
  [de0858da] + Printf
  [3fa0cd96] + REPL
  [9a3f8284] + Random
  [ea8e919c] + SHA v0.7.0
  [9e88b42a] + Serialization
  [6462fe0b] + Sockets
  [fa267f1f] + TOML v1.0.3
  [a4e569a6] + Tar v1.10.0
  [8dfed614] + Test
  [cf7118a7] + UUIDs
  [4ec0a83e] + Unicode
  [deac9b47] + LibCURL_jll v8.4.0+0
  [29816b5a] + LibSSH2_jll v1.11.0+1
  [c8ffd9c3] + MbedTLS_jll v2.28.2+0
  [14a3606d] + MozillaCACerts_jll v2022.10.11
  [83775a58] + Zlib_jll v1.2.13+0
  [8e850ede] + nghttp2_jll v1.52.0+1
  [3f19e933] + p7zip_jll v17.4.0+0
Precompiling project...
  11 dependencies successfully precompiled in 28 seconds. 5 already precompiled.

and

julia> versioninfo()
Julia Version 1.10.2
Commit bd47eca2c8a (2024-03-01 10:14 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: macOS (x86_64-apple-darwin22.4.0)
  CPU: 8 × Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, skylake)
Threads: 1 default, 0 interactive, 1 GC (on 8 virtual cores)
julia> ]
(@v1.10) pkg> add IJulia
   Resolving package versions...
    Updating `~/.julia/environments/v1.10/Project.toml`
  [7073ff75] + IJulia v1.24.2
    Updating `~/.julia/environments/v1.10/Manifest.toml`
  [8f4d0f93] + Conda v1.10.0
  [7073ff75] + IJulia v1.24.2
  [692b3bcd] + JLLWrappers v1.5.0
  [682c06a0] + JSON v0.21.4
  [739be429] + MbedTLS v1.1.9
  [b85f4697] + SoftGlobalScope v1.1.0
  [81def892] + VersionParsing v1.3.0
  [c2297ded] + ZMQ v1.2.2
  [8f1865be] + ZeroMQ_jll v4.3.5+0
  [a9144af2] + libsodium_jll v1.0.20+0
  [0dad84c5] + ArgTools v1.1.1
  [f43a241f] + Downloads v1.6.0
  [7b1f6079] + FileWatching
  [b27032c2] + LibCURL v0.6.4
  [76f85450] + LibGit2
  [56ddb016] + Logging
  [a63ad114] + Mmap
  [ca575930] + NetworkOptions v1.2.0
  [44cfe95a] + Pkg v1.10.0
  [a4e569a6] + Tar v1.10.0
  [8dfed614] + Test
  [deac9b47] + LibCURL_jll v8.4.0+0
  [e37daf67] + LibGit2_jll v1.6.4+0
  [29816b5a] + LibSSH2_jll v1.11.0+1
  [c8ffd9c3] + MbedTLS_jll v2.28.2+1
  [14a3606d] + MozillaCACerts_jll v2023.1.10
  [83775a58] + Zlib_jll v1.2.13+1
  [8e850ede] + nghttp2_jll v1.52.0+1
  [3f19e933] + p7zip_jll v17.4.0+2

In both cases there is no resulting Jupyter kernel specification in ~/Library/Jupyter/kernels/.

When I used Julia via Homebrew, the install method above did produce the kernel specifications in ~/Library/Jupyter/kernels/.

[prehensilecode]

I uninstalled juliaup (juliaup self uninstall), then deleted ~/.julia/, and then re-installed juliaup with Julia 1.10.2, and re-installed IJulia.

Now, the Jupyter kernel is installed as expected.