# Problem using Overrides.toml
**URL:** https://discourse.julialang.org/t/problem-using-overrides-toml/34296
**Category:** General Usage
**Tags:** pkg
**Created:** [February 7, 2020, 1:04pm UTC](https://discourse.julialang.org/t/problem-using-overrides-toml/34296 "2020-02-07T13:04:09Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@barche](https://discourse.julialang.org/u/barche)
#### Post date: [February 7, 2020, 1:04pm UTC](https://discourse.julialang.org/t/problem-using-overrides-toml/34296/1 "2020-02-07T13:04:09Z")
Hi all,
I’m trying to follow the instructions at [8. Artifacts · Pkg.jl](https://julialang.github.io/Pkg.jl/dev/artifacts/#Overriding-artifact-locations-1) to override the libcxxwrap-julia binaries (so I can use my local development version), using the following `Overrides.toml` file:
```nohighlight
[3eaa8342-bff7-56a5-9981-c04077f7cee7]
libcxxwrap_julia = "/Users/user/src/build/libcxxwrap-julia/lib/libcxxwrap_julia.dylib"
libcxxwrap_julia_stl = "/Users/user/src/build/libcxxwrap-julia/lib/liblibcxxwrap_julia_stl.dylib"
libjlcxx_containers = "/Users/user/src/build/libcxxwrap-julia/lib/libjlcxx_containers.dylib"
libexcept = "/Users/user/src/build/libcxxwrap-julia/lib/libexcept.dylib"
libextended = "/Users/user/src/build/libcxxwrap-julia/lib/libextended.dylib"
libfunctions = "/Users/user/src/build/libcxxwrap-julia/lib/libfunctions.dylib"
libhello = "/Users/user/src/build/libcxxwrap-julia/lib/libhello.dylib"
libbasic_types = "/Users/user/src/build/libcxxwrap-julia/lib/libbasic_types.dylib"
libinheritance = "/Users/user/src/build/libcxxwrap-julia/lib/libinheritance.dylib"
libparametric = "/Users/user/src/build/libcxxwrap-julia/lib/libparametric.dylib"
libpointer_modification = "/Users/user/src/build/libcxxwrap-julia/lib/libpointer_modification.dylib"
libtypes = "/Users/user/src/build/libcxxwrap-julia/lib/libtypes.dylib"
```
However, when trying to add or load the `libcxxwrap_julia_jll` package, that gives this error:
```julia
(CxxWrap) pkg> add libcxxwrap_julia_jll
Updating registry at `~/.julia/registries/General`
┌ Warning: Some registries failed to update:
│ — `~/.julia/registries/General` — registry dirty
└ @ Pkg.Types /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Types.jl:1199
Resolving package versions...
ERROR: Unable to automatically install 'libcxxwrap_julia' from '/Users/user/.julia/packages/libcxxwrap_julia_jll/LDRaF/Artifacts.toml'
Stacktrace:
[1] error(::String) at ./error.jl:33
[2] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Artifacts.jl:873
[3] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tuple{Pkg.BinaryPlatforms.MacOS,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at ./none:0
[4] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool, ::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Artifacts.jl:919
[5] #ensure_all_artifacts_installed at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Operations.jl:0 [inlined]
[6] #download_artifacts#78(::Pkg.BinaryPlatforms.MacOS, ::Bool, ::typeof(Pkg.Operations.download_artifacts), ::Array{String,1}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Operations.jl:580
[7] #download_artifacts at ./none:0 [inlined]
[8] #download_artifacts#73(::Pkg.BinaryPlatforms.MacOS, ::Bool, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Operations.jl:570
[9] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPlatforms.MacOS}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at ./none:0
[10] #add#112(::Bool, ::Pkg.BinaryPlatforms.MacOS, ::typeof(Pkg.Operations.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/Operations.jl:1017
[11] #add at ./none:0 [inlined]
[12] #add#25(::Bool, ::Pkg.BinaryPlatforms.MacOS, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:102
[13] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/API.jl:72
[14] do_add!(::Dict{Symbol,Any}, ::Array{Pkg.Types.PackageSpec,1}, ::Dict{Symbol,Any}) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/REPLMode.jl:505
[15] #invokelatest#1(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(Base.invokelatest), ::Any, ::Any, ::Vararg{Any,N} where N) at ./essentials.jl:709
[16] invokelatest(::Any, ::Any, ::Vararg{Any,N} where N) at ./essentials.jl:708
[17] do_cmd!(::Pkg.REPLMode.Command, ::REPL.LineEditREPL) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/REPLMode.jl:412
[18] #do_cmd#23(::Bool, ::typeof(Pkg.REPLMode.do_cmd), ::REPL.LineEditREPL, ::String) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/REPLMode.jl:391
[19] do_cmd at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/REPLMode.jl:387 [inlined]
[20] (::Pkg.REPLMode.var"#28#31"{REPL.LineEditREPL,REPL.LineEdit.Prompt})(::REPL.LineEdit.MIState, ::Base.GenericIOBuffer{Array{UInt8,1}}, ::Bool) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/Pkg/src/REPLMode.jl:619
[21] #invokelatest#1 at ./essentials.jl:709 [inlined]
[22] invokelatest at ./essentials.jl:708 [inlined]
[23] run_interface(::REPL.Terminals.TextTerminal, ::REPL.LineEdit.ModalInterface, ::REPL.LineEdit.MIState) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/REPL/src/LineEdit.jl:2306
[24] run_frontend(::REPL.LineEditREPL, ::REPL.REPLBackendRef) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/REPL/src/REPL.jl:1045
[25] run_repl(::REPL.AbstractREPL, ::Any) at /Users/julia/buildbot/worker/package_macos64/build/usr/share/julia/stdlib/v1.3/REPL/src/REPL.jl:201
[26] (::Base.var"#770#772"{Bool,Bool,Bool,Bool})(::Module) at ./client.jl:382
[27] #invokelatest#1 at ./essentials.jl:709 [inlined]
[28] invokelatest at ./essentials.jl:708 [inlined]
[29] run_main_repl(::Bool, ::Bool, ::Bool, ::Bool, ::Bool) at ./client.jl:366
[30] exec_options(::Base.JLOptions) at ./client.jl:304
[31] _start() at ./client.jl:460
```
If I remove the Overrides.toml, it works but of course downloads the released version. Any ideas on how to fix this?
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [February 7, 2020, 1:17pm UTC](https://discourse.julialang.org/t/problem-using-overrides-toml/34296/2 "2020-02-07T13:17:34Z")
What does the Artifact file look like and how do you use it in the code?
AFAIU (but I haven’t used this much) is that you give a replacement path for a given artifact name. So if your artifact is called `libcxxwrap` you would have
```julia
[3eaa8342-bff7-56a5-9981-c04077f7cee7]
libcxxwrap = "/Users/user/src/build/libcxxwrap-julia/"
```
and then `artifact"libcxxwrap"` would give that path.
The “substructure” of the redirected artifact must thus correspond to the unredirected artifact (i.e you don’t override on a file level).
---
### Author:  [@giordano](https://discourse.julialang.org/u/giordano)
#### Post date: [February 7, 2020, 1:47pm UTC](https://discourse.julialang.org/t/problem-using-overrides-toml/34296/3 "2020-02-07T13:47:16Z")
I never played directly with override files, but my understanding is the same as Kristoffer. For JLL packages this means that you can only override the “prefix”
---
### Author:  [@barche](https://discourse.julialang.org/u/barche)
#### Post date: [February 7, 2020, 4:10pm UTC](https://discourse.julialang.org/t/problem-using-overrides-toml/34296/4 "2020-02-07T16:10:47Z")
Awesome, that worked, thanks. The artifact in question is the auto-generated libcxxwrap\_julia jll package. The only minor remaining issue is that the library version is included in the file name, so I still have to dev the jll package to override that, but I think that is due to the way BinaryBuilder generates the package.