That seems to be a different thing, about r-juliacall instead of RCall.
For me RCall loads without issue on Julia 1.11 on MacOS
(@v1.11) pkg> activate --temp
Activating new project at `/var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/jl_2Tjdu8`
(jl_2Tjdu8) pkg> add RCall
Resolving package versions...
Installed Conda ────────────── v1.10.2
Installed StringManipulation ─ v0.4.0
Installed StatsModels ──────── v0.7.4
Installed RCall ────────────── v0.14.6
Installed PrettyTables ─────── v2.4.0
Installed DataFrames ───────── v1.7.0
Updating `/private/var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/jl_2Tjdu8/Project.toml`
[6f49c342] + RCall v0.14.6
Updating `/private/var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/jl_2Tjdu8/Manifest.toml`
[324d7699] + CategoricalArrays v0.10.8
[34da2185] + Compat v4.16.0
[8f4d0f93] + Conda v1.10.2
[a8cc5b0e] + Crayons v4.1.1
[9a962f9c] + DataAPI v1.16.0
[a93c6f00] + DataFrames v1.7.0
[864edb3b] + DataStructures v0.18.20
[e2d170a0] + DataValueInterfaces v1.0.0
[ffbed154] + DocStringExtensions v0.9.3
[34004b35] + HypergeometricFunctions v0.3.24
[842dd82b] + InlineStrings v1.4.2
[41ab1584] + InvertedIndices v1.3.0
[92d709cd] + IrrationalConstants v0.2.2
[82899510] + IteratorInterfaceExtensions v1.0.0
[692b3bcd] + JLLWrappers v1.6.1
[682c06a0] + JSON v0.21.4
[b964fa9f] + LaTeXStrings v1.4.0
[2ab3a3ac] + LogExpFunctions v0.3.28
[e1d29d7a] + Missings v1.2.0
[bac558e1] + OrderedCollections v1.6.3
[69de0a69] + Parsers v2.8.1
[2dfb63ee] + PooledArrays v1.4.3
[aea7be01] + PrecompileTools v1.2.1
[21216c6a] + Preferences v1.4.3
[08abe8d2] + PrettyTables v2.4.0
[6f49c342] + RCall v0.14.6
[189a3867] + Reexport v1.2.2
[ae029012] + Requires v1.3.0
[79098fc4] + Rmath v0.8.0
[91c51154] + SentinelArrays v1.4.5
[1277b4bf] + ShiftedArrays v2.0.0
[a2af1166] + SortingAlgorithms v1.2.1
[276daf66] + SpecialFunctions v2.4.0
[10745b16] + Statistics v1.11.1
[82ae8749] + StatsAPI v1.7.0
[2913bbd2] + StatsBase v0.34.3
[4c63d2b9] + StatsFuns v1.3.2
[3eaba693] + StatsModels v0.7.4
[892a3eda] + StringManipulation v0.4.0
[3783bdb8] + TableTraits v1.0.1
[bd369af6] + Tables v1.12.0
[81def892] + VersionParsing v1.3.0
[1b915085] + WinReg v1.0.0
[efe28fd5] + OpenSpecFun_jll v0.5.5+0
[f50d1b31] + Rmath_jll v0.5.1+0
[0dad84c5] + ArgTools v1.1.2
[56f22d72] + Artifacts v1.11.0
[2a0f44e3] + Base64 v1.11.0
[ade2ca70] + Dates v1.11.0
[f43a241f] + Downloads v1.6.0
[7b1f6079] + FileWatching v1.11.0
[9fa8497b] + Future v1.11.0
[b77e0a4c] + InteractiveUtils v1.11.0
[b27032c2] + LibCURL v0.6.4
[76f85450] + LibGit2 v1.11.0
[8f399da3] + Libdl v1.11.0
[37e2e46d] + LinearAlgebra v1.11.0
[56ddb016] + Logging v1.11.0
[d6f4376e] + Markdown v1.11.0
[a63ad114] + Mmap v1.11.0
[ca575930] + NetworkOptions v1.2.0
[44cfe95a] + Pkg v1.11.0
[de0858da] + Printf v1.11.0
[3fa0cd96] + REPL v1.11.0
[9a3f8284] + Random v1.11.0
[ea8e919c] + SHA v0.7.0
[9e88b42a] + Serialization v1.11.0
[6462fe0b] + Sockets v1.11.0
[2f01184e] + SparseArrays v1.11.0
[f489334b] + StyledStrings v1.11.0
[fa267f1f] + TOML v1.0.3
[a4e569a6] + Tar v1.10.0
[cf7118a7] + UUIDs v1.11.0
[4ec0a83e] + Unicode v1.11.0
[e66e0078] + CompilerSupportLibraries_jll v1.1.1+0
[deac9b47] + LibCURL_jll v8.6.0+0
[e37daf67] + LibGit2_jll v1.7.2+0
[29816b5a] + LibSSH2_jll v1.11.0+1
[c8ffd9c3] + MbedTLS_jll v2.28.6+0
[14a3606d] + MozillaCACerts_jll v2023.12.12
[4536629a] + OpenBLAS_jll v0.3.27+1
[05823500] + OpenLibm_jll v0.8.1+2
[bea87d4a] + SuiteSparse_jll v7.7.0+0
[83775a58] + Zlib_jll v1.2.13+1
[8e850b90] + libblastrampoline_jll v5.11.0+0
[8e850ede] + nghttp2_jll v1.59.0+0
[3f19e933] + p7zip_jll v17.4.0+2
Building Conda → `~/.julia/scratchspaces/44cfe95a-1eb2-52ea-b672-e2afdf69b78f/b19db3927f0db4151cb86d073689f2428e524576/build.log`
Building RCall → `~/.julia/scratchspaces/44cfe95a-1eb2-52ea-b672-e2afdf69b78f/db17ec90d9f904b79e7877a764fdf95ff5c5f315/build.log`
Precompiling project...
34 dependencies successfully precompiled in 40 seconds. 49 already precompiled.
julia> using RCall
[ Info: Precompiling RCall [6f49c342-dc21-5d91-9882-a32aef131414]
julia> versioninfo()
Julia Version 1.11.1
Commit 8f5b7ca12ad (2024-10-16 10:53 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: macOS (arm64-apple-darwin22.4.0)
CPU: 8 × Apple M1
WORD_SIZE: 64
LLVM: libLLVM-16.0.6 (ORCJIT, apple-m1)
Threads: 4 default, 0 interactive, 2 GC (on 4 virtual cores)
Environment:
JULIA_NUM_THREADS = 4
JULIA_PKG_SERVER_REGISTRY_PREFERENCE = eager