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Issue when "using PyPlot" is called before "using Plots #5207

@AntoninoDAnna

Description

@AntoninoDAnna

Details

Backends

This bug occurs on ( insert x below )

Backend yes no untested
gr (default) x
unicodeplots x
pythonplot x
pgfplotsx x
plotlyjs x
plotly x
gaston x

Versions

Plots.jl version: v1.41.3
Backend version (]st -m <backend(s)>):

  [28b8d3ca] GR v0.73.19
  [8314cec4] PGFPlotsX v1.6.2
  [b8865327] UnicodePlots v3.8.1

Output of versioninfo():

julia> versioninfo()

Julia Version 1.11.6
Commit 9615af0f269 (2025-07-09 12:58 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × AMD Ryzen 7 3700U with Radeon Vega Mobile Gfx
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver1)
Threads: 1 default, 0 interactive, 1 GC (on 8 virtual cores)

Hi all. I been using so far PyPlot, however for some issue on a server that I can easily solve, I thought of moving to Plots.jl. However, I started having error thrown when I execute using Plots after some other packages. After some debugging, I realized that the issue seems to be with PyPlot and packages that have it as dipendency, only if it explicity used by them. As a test, I also tried to remove the using PyPlot line from a package without removing it from its Project.toml and the error disappeared.

Here is how I can reproduce the errors.

(@v1.11) pkg> activate --temp
  Activating new project at `/tmp/jl_GMQOqK`

(jl_GMQOqK) pkg> add Plots, PyPlot;
   Resolving package versions...
    Updating `/tmp/jl_GMQOqK/Project.toml`
  [91a5bcdd] + Plots v1.41.3
  [d330b81b] + PyPlot v2.11.6
    Updating `/tmp/jl_GMQOqK/Manifest.toml`
  [66dad0bd] + AliasTables v1.1.3
  [d1d4a3ce] + BitFlags v0.1.9
  [944b1d66] + CodecZlib v0.7.8
  [35d6a980] + ColorSchemes v3.31.0
  [3da002f7] + ColorTypes v0.12.1
  [c3611d14] + ColorVectorSpace v0.11.0
  [5ae59095] + Colors v0.13.1
  [f0e56b4a] + ConcurrentUtilities v2.5.0
  [8f4d0f93] + Conda v1.10.3
  [d38c429a] + Contour v0.6.3
  [9a962f9c] + DataAPI v1.16.0
  [864edb3b] + DataStructures v0.19.3
  [8bb1440f] + DelimitedFiles v1.9.1
  [ffbed154] + DocStringExtensions v0.9.5
  [460bff9d] + ExceptionUnwrapping v0.1.11
  [c87230d0] + FFMPEG v0.4.5
  [53c48c17] + FixedPointNumbers v0.8.5
  [1fa38f19] + Format v1.3.7
  [28b8d3ca] + GR v0.73.19
  [42e2da0e] + Grisu v1.0.2
  [cd3eb016] + HTTP v1.10.19
  [92d709cd] + IrrationalConstants v0.2.6
  [1019f520] + JLFzf v0.1.11
  [692b3bcd] + JLLWrappers v1.7.1
  [682c06a0] + JSON v1.3.0
  [b964fa9f] + LaTeXStrings v1.4.0
  [23fbe1c1] + Latexify v0.16.10
  [2ab3a3ac] + LogExpFunctions v0.3.29
  [e6f89c97] + LoggingExtras v1.2.0
  [1914dd2f] + MacroTools v0.5.16
  [739be429] + MbedTLS v1.1.9
  [442fdcdd] + Measures v0.3.3
  [e1d29d7a] + Missings v1.2.0
  [77ba4419] + NaNMath v1.1.3
  [4d8831e6] + OpenSSL v1.6.1
  [bac558e1] + OrderedCollections v1.8.1
  [69de0a69] + Parsers v2.8.3
  [ccf2f8ad] + PlotThemes v3.3.0
  [995b91a9] + PlotUtils v1.4.4
  [91a5bcdd] + Plots v1.41.3
⌅ [aea7be01] + PrecompileTools v1.2.1
  [21216c6a] + Preferences v1.5.1
  [43287f4e] + PtrArrays v1.3.0
  [438e738f] + PyCall v1.96.4
  [d330b81b] + PyPlot v2.11.6
  [3cdcf5f2] + RecipesBase v1.3.4
  [01d81517] + RecipesPipeline v0.6.12
  [189a3867] + Reexport v1.2.2
  [05181044] + RelocatableFolders v1.0.1
  [ae029012] + Requires v1.3.1
  [6c6a2e73] + Scratch v1.3.0
  [992d4aef] + Showoff v1.0.3
  [777ac1f9] + SimpleBufferStream v1.2.0
  [a2af1166] + SortingAlgorithms v1.2.2
  [860ef19b] + StableRNGs v1.0.4
  [10745b16] + Statistics v1.11.1
  [82ae8749] + StatsAPI v1.8.0
  [2913bbd2] + StatsBase v0.34.9
  [ec057cc2] + StructUtils v2.6.0
  [62fd8b95] + TensorCore v0.1.1
  [3bb67fe8] + TranscodingStreams v0.11.3
  [5c2747f8] + URIs v1.6.1
  [1cfade01] + UnicodeFun v0.4.1
  [41fe7b60] + Unzip v0.2.0
  [81def892] + VersionParsing v1.3.0
  [6e34b625] + Bzip2_jll v1.0.9+0
  [83423d85] + Cairo_jll v1.18.5+0
  [ee1fde0b] + Dbus_jll v1.16.2+0
  [2702e6a9] + EpollShim_jll v0.0.20230411+1
  [2e619515] + Expat_jll v2.7.3+0
  [b22a6f82] + FFMPEG_jll v8.0.0+0
  [a3f928ae] + Fontconfig_jll v2.17.1+0
  [d7e528f0] + FreeType2_jll v2.13.4+0
  [559328eb] + FriBidi_jll v1.0.17+0
  [0656b61e] + GLFW_jll v3.4.1+0
  [d2c73de3] + GR_jll v0.73.19+1
  [b0724c58] + GettextRuntime_jll v0.22.4+0
  [61579ee1] + Ghostscript_jll v9.55.1+0
  [7746bdde] + Glib_jll v2.86.2+0
  [3b182d85] + Graphite2_jll v1.3.15+0
  [2e76f6c2] + HarfBuzz_jll v8.5.1+0
  [aacddb02] + JpegTurbo_jll v3.1.4+0
  [c1c5ebd0] + LAME_jll v3.100.3+0
  [88015f11] + LERC_jll v4.0.1+0
  [1d63c593] + LLVMOpenMP_jll v18.1.8+0
  [dd4b983a] + LZO_jll v2.10.3+0
⌅ [e9f186c6] + Libffi_jll v3.4.7+0
  [7e76a0d4] + Libglvnd_jll v1.7.1+1
  [94ce4f54] + Libiconv_jll v1.18.0+0
  [4b2f31a3] + Libmount_jll v2.41.2+0
  [89763e89] + Libtiff_jll v4.7.2+0
  [38a345b3] + Libuuid_jll v2.41.2+0
  [e7412a2a] + Ogg_jll v1.3.6+0
  [458c3c95] + OpenSSL_jll v3.5.4+0
  [91d4177d] + Opus_jll v1.5.2+0
  [36c8627f] + Pango_jll v1.57.0+0
⌅ [30392449] + Pixman_jll v0.44.2+0
  [c0090381] + Qt6Base_jll v6.8.2+2
  [629bc702] + Qt6Declarative_jll v6.8.2+1
  [ce943373] + Qt6ShaderTools_jll v6.8.2+1
  [e99dba38] + Qt6Wayland_jll v6.8.2+2
  [a44049a8] + Vulkan_Loader_jll v1.3.243+0
  [a2964d1f] + Wayland_jll v1.24.0+0
  [ffd25f8a] + XZ_jll v5.8.1+0
  [f67eecfb] + Xorg_libICE_jll v1.1.2+0
  [c834827a] + Xorg_libSM_jll v1.2.6+0
  [4f6342f7] + Xorg_libX11_jll v1.8.12+0
  [0c0b7dd1] + Xorg_libXau_jll v1.0.13+0
  [935fb764] + Xorg_libXcursor_jll v1.2.4+0
  [a3789734] + Xorg_libXdmcp_jll v1.1.6+0
  [1082639a] + Xorg_libXext_jll v1.3.7+0
  [d091e8ba] + Xorg_libXfixes_jll v6.0.2+0
  [a51aa0fd] + Xorg_libXi_jll v1.8.3+0
  [d1454406] + Xorg_libXinerama_jll v1.1.6+0
  [ec84b674] + Xorg_libXrandr_jll v1.5.5+0
  [ea2f1a96] + Xorg_libXrender_jll v0.9.12+0
  [c7cfdc94] + Xorg_libxcb_jll v1.17.1+0
  [cc61e674] + Xorg_libxkbfile_jll v1.1.3+0
  [e920d4aa] + Xorg_xcb_util_cursor_jll v0.1.6+0
  [12413925] + Xorg_xcb_util_image_jll v0.4.1+0
  [2def613f] + Xorg_xcb_util_jll v0.4.1+0
  [975044d2] + Xorg_xcb_util_keysyms_jll v0.4.1+0
  [0d47668e] + Xorg_xcb_util_renderutil_jll v0.3.10+0
  [c22f9ab0] + Xorg_xcb_util_wm_jll v0.4.2+0
  [35661453] + Xorg_xkbcomp_jll v1.4.7+0
  [33bec58e] + Xorg_xkeyboard_config_jll v2.44.0+0
  [c5fb5394] + Xorg_xtrans_jll v1.6.0+0
  [3161d3a3] + Zstd_jll v1.5.7+1
  [35ca27e7] + eudev_jll v3.2.14+0
  [214eeab7] + fzf_jll v0.61.1+0
  [a4ae2306] + libaom_jll v3.13.1+0
  [0ac62f75] + libass_jll v0.17.4+0
  [1183f4f0] + libdecor_jll v0.2.2+0
  [2db6ffa8] + libevdev_jll v1.13.4+0
  [f638f0a6] + libfdk_aac_jll v2.0.4+0
  [36db933b] + libinput_jll v1.28.1+0
  [b53b4c65] + libpng_jll v1.6.53+0
  [f27f6e37] + libvorbis_jll v1.3.8+0
  [009596ad] + mtdev_jll v1.1.7+0
  [1270edf5] + x264_jll v10164.0.1+0
  [dfaa095f] + x265_jll v4.1.0+0
  [d8fb68d0] + xkbcommon_jll v1.13.0+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
  [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
  [8dfed614] + Test v1.11.0
  [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 v0.8.5+0
  [efcefdf7] + PCRE2_jll v10.42.0+1
  [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
        Info Packages marked with ⌅ have new versions available but compatibilit
y constraints restrict them from upgrading. To see why use `status --outdated -m
`

julia> using PyPlot

julia> using Plots
ERROR: InitError: could not load library "/home/nuccio/.julia/artifacts/3f1128f0
5e58ae4264bcad52869c9a9f766373d1/lib/libgio-2.0.so"
/home/nuccio/.julia/artifacts/3f1128f05e58ae4264bcad52869c9a9f766373d1/lib/libgo
bject-2.0.so.0: undefined symbol: g_string_copy
Stacktrace:
  [1] dlopen(s::String, flags::UInt32; throw_error::Bool)
    @ Base.Libc.Libdl ./libdl.jl:120
  [2] dlopen(s::String, flags::UInt32)
    @ Base.Libc.Libdl ./libdl.jl:119
  [3] macro expansion
    @ ~/.julia/packages/JLLWrappers/m2Pjh/src/products/library_generators.jl:63 
[inlined]
  [4] __init__()
    @ Glib_jll ~/.julia/packages/Glib_jll/XlNgR/src/wrappers/x86_64-linux-gnu.jl
:19
  [5] run_module_init(mod::Module, i::Int64)
    @ Base ./loading.jl:1378
  [6] register_restored_modules(sv::Core.SimpleVector, pkg::Base.PkgId, path::St
ring)
    @ Base ./loading.jl:1366
  [7] _include_from_serialized(pkg::Base.PkgId, path::String, ocachepath::String
, depmods::Vector{…}, ignore_native::Nothing; register::Bool)
    @ Base ./loading.jl:1254
  [8] _include_from_serialized (repeats 2 times)
    @ ./loading.jl:1210 [inlined]
  [9] _require_search_from_serialized(pkg::Base.PkgId, sourcepath::String, build
_id::UInt128, stalecheck::Bool; reasons::Dict{…}, DEPOT_PATH::Vector{…})
    @ Base ./loading.jl:2041
 [10] _require(pkg::Base.PkgId, env::String)
    @ Base ./loading.jl:2527
 [11] __require_prelocked(uuidkey::Base.PkgId, env::String)
    @ Base ./loading.jl:2388
 [12] #invoke_in_world#3
    @ ./essentials.jl:1089 [inlined]
 [13] invoke_in_world
    @ ./essentials.jl:1086 [inlined]
 [14] _require_prelocked(uuidkey::Base.PkgId, env::String)
    @ Base ./loading.jl:2375
 [15] macro expansion
    @ ./loading.jl:2314 [inlined]
 [16] macro expansion
    @ ./lock.jl:273 [inlined]
 [17] __require(into::Module, mod::Symbol)
    @ Base ./loading.jl:2271
 [18] #invoke_in_world#3
    @ ./essentials.jl:1089 [inlined]
 [19] invoke_in_world
    @ ./essentials.jl:1086 [inlined]
 [20] require(into::Module, mod::Symbol)
    @ Base ./loading.jl:2260
during initialization of module Glib_jll
Some type information was truncated. Use `show(err)` to see complete types.

julia> 

However if using Plots is before using PyPlot no error is throw.

Is this some expected behaviour due to incompatibilty between Plots and PyPlot?

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