# Failed to install Interact, DiffEqFlux & Symbolics on 1.7.2

**URL:** <https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036>\
**Category:** General Usage\
**Created:** [February 8, 2022, 3:56pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036 "2022-02-08T15:56:37Z")\
**Posts on this page:** 17\
**Page:** 1

<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 8, 2022, 3:56pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/1 "2022-02-08T15:56:37Z")

</div>

Three packages that did not install for v1.7.2 (out of a long list):

- Interact
- DiffEqFlux
- Symbolics

Anyone with similar experience? [Windows 11, 64bit, latest version.]

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [February 8, 2022, 4:04pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/2 "2022-02-08T16:04:11Z")

</div>

> [@BLI](#):
>
> Three packages that did not install for v1.7.2

Being more specific about the issue, for example by providing a full error message + stacktrace, may help pinning down the culprit. Best done in a new thread.

---

<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 8, 2022, 4:14pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/3 "2022-02-08T16:14:28Z")

</div>

Here is the error message when trying to add pkg. `Symbolics`… on a Surface Book 2 with NVIDIA GPU:

```julia
> Pkg.add("Symbolics")
    Updating registry at `C:\Users\User_Name\.julia\registries\General`
    Updating git-repo `https://github.com/JuliaRegistries/General.git`
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package CUDA [052768ef]:
 CUDA [052768ef] log:
 ├─possible versions are: 0.1.0-3.8.0 or uninstalled
 ├─restricted by julia compatibility requirements to versions: [2.3.0, 2.5.0-3.8.0] or uninstalled
 ├─restricted by compatibility requirements with LLVM [929cbde3] to versions: 3.3.3-3.8.0 or uninstalled
 │ └─LLVM [929cbde3] log:
 │ ├─possible versions are: 0.9.0-4.7.1 or uninstalled
 │ └─restricted by julia compatibility requirements to versions: 4.0.0-4.7.1 or uninstalled
 ├─restricted by compatibility requirements with Flux [587475ba] to versions: 3.0.0-3.8.0, leaving only versions: 3.3.3-3.8.0
 │ └─Flux [587475ba] log:
 │ ├─possible versions are: 0.4.1-0.12.9 or uninstalled
 │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.4.1-0.12.9
 │ ├─restricted by compatibility requirements with CUDAapi [3895d2a7] to versions: [0.4.1-0.8.3, 0.10.0-0.12.9] or uninstalled, leaving only versions: [0.4.1-0.8.3, 0.10.0-0.12.9]
 │ │ └─CUDAapi [3895d2a7] log:
 │ │ ├─possible versions are: 0.5.0-4.0.0 or uninstalled
 │ │ └─restricted by julia compatibility requirements to versions: uninstalled
 │ ├─restricted by compatibility requirements with CuArrays [3a865a2d] to versions: [0.4.1-0.8.3, 0.11.0-0.12.9] or uninstalled, leaving only versions: [0.4.1-0.8.3, 0.11.0-0.12.9]
 │ │ └─CuArrays [3a865a2d] log:
 │ │ ├─possible versions are: 0.2.1-2.2.2 or uninstalled
 │ │ └─restricted by julia compatibility requirements to versions: uninstalled
 │ ├─restricted by compatibility requirements with Tracker [9f7883ad] to versions: [0.4.1-0.8.0, 0.8.3-0.12.9] or uninstalled, leaving only versions: [0.4.1-0.8.0, 0.8.3, 0.11.0-0.12.9]
 │ │ └─Tracker [9f7883ad] log:
 │ │ ├─possible versions are: 0.1.0-0.2.18 or uninstalled
 │ │ ├─restricted by compatibility requirements with DiffRules [b552c78f] to versions: [0.1.0-0.2.3, 0.2.5-0.2.18] or uninstalled
 │ │ │ └─DiffRules [b552c78f] log:
 │ │ │ ├─possible versions are: 0.0.8-1.9.1 or uninstalled
 │ │ │ ├─restricted by compatibility requirements with ModelingToolkit [961ee093] to versions: 0.0.8-1.9.1
 │ │ │ │ └─ModelingToolkit [961ee093] log:
 │ │ │ │ ├─possible versions are: 0.0.1-8.3.2 or uninstalled
 │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.0.1-8.3.2
 │ │ │ │ ├─restricted by compatibility requirements with DataDrivenDiffEq [2445eb08] to versions: [0.9.0-1.4.3, 3.0.0-8.3.2]
 │ │ │ │ │ └─DataDrivenDiffEq [2445eb08] log:
 │ │ │ │ │ ├─possible versions are: 0.1.0-0.7.0 or uninstalled
 │ │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.1.0-0.7.0
 │ │ │ │ │ └─restricted by compatibility requirements with ModelingToolkit [961ee093] to versions: [0.1.1-0.3.1, 0.5.3-0.7.0] or uninstalled, leaving only versions: [0.1.1-0.3.1, 0.5.3-0.7.0]
 │ │ │ │ │ └─ModelingToolkit [961ee093] log: see above
 │ │ │ │ ├─restricted by compatibility requirements with RuntimeGeneratedFunctions [7e49a35a] to versions: [0.0.1-3.21.0, 4.5.0-8.3.2] or uninstalled, leaving only versions: [0.9.0-1.4.3, 3.0.0-3.21.0, 4.5.0-8.3.2]
 │ │ │ │ │ └─RuntimeGeneratedFunctions [7e49a35a] log:
 │ │ │ │ │ ├─possible versions are: 0.1.0-0.5.3 or uninstalled
 │ │ │ │ │ └─restricted by compatibility requirements with Symbolics [0c5d862f] to versions: 0.5.0-0.5.3
 │ │ │ │ │ └─Symbolics [0c5d862f] log:
 │ │ │ │ │ ├─possible versions are: 0.1.0-4.3.0 or uninstalled
 │ │ │ │ │ └─restricted to versions * by an explicit requirement, leaving only versions 0.1.0-4.3.0
 │ │ │ │ ├─restricted by compatibility requirements with SpecialFunctions [276daf66] to versions: [0.0.1-0.2.0, 1.0.0-8.3.2] or uninstalled, leaving only versions: [1.0.0-1.4.3, 3.0.0-3.21.0, 4.5.0-8.3.2]
 │ │ │ │ │ └─SpecialFunctions [276daf66] log:
 │ │ │ │ │ ├─possible versions are: 0.7.0-2.1.2 or uninstalled
 │ │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.7.0-2.1.2
 │ │ │ │ │ ├─restricted by compatibility requirements with SpecialPolynomials [a25cea48] to versions: 0.9.0-1.8.1
 │ │ │ │ │ │ └─SpecialPolynomials [a25cea48] log:
 │ │ │ │ │ │ ├─possible versions are: 0.1.0-0.2.7 or uninstalled
 │ │ │ │ │ │ └─restricted to versions * by an explicit requirement, leaving only versions 0.1.0-0.2.7
 │ │ │ │ │ ├─restricted by compatibility requirements with SymbolicUtils [d1185830] to versions: 0.10.0-2.1.2, leaving only versions: 0.10.0-1.8.1
 │ │ │ │ │ │ └─SymbolicUtils [d1185830] log:
 │ │ │ │ │ │ ├─possible versions are: 0.1.0-0.19.7 or uninstalled
 │ │ │ │ │ │ └─restricted by compatibility requirements with Symbolics [0c5d862f] to versions: [0.8.4-0.13.5, 0.15.1-0.19.7]
 │ │ │ │ │ │ └─Symbolics [0c5d862f] log: see above
 │ │ │ │ │ └─restricted by compatibility requirements with Turing [fce5fe82] to versions: 0.7.2-0.10.3, leaving only versions: 0.10.0-0.10.3
 │ │ │ │ │ └─Turing [fce5fe82] log:
 │ │ │ │ │ ├─possible versions are: 0.5.0-0.20.0 or uninstalled
 │ │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.5.0-0.20.0
 │ │ │ │ │ ├─restricted by compatibility requirements with DiffEqBayes [ebbdde9d] to versions: 0.5.0-0.16.6
 │ │ │ │ │ │ └─DiffEqBayes [ebbdde9d] log:
 │ │ │ │ │ │ ├─possible versions are: 0.8.0-2.26.0 or uninstalled
 │ │ │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.8.0-2.26.0
 │ │ │ │ │ │ ├─restricted by compatibility requirements with Distributions [31c24e10] to versions: 2.6.0-2.26.0 or uninstalled, leaving only versions: 2.6.0-2.26.0
 │ │ │ │ │ │ │ └─Distributions [31c24e10] log:
 │ │ │ │ │ │ │ ├─possible versions are: 0.16.0-0.25.46 or uninstalled
 │ │ │ │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.16.0-0.25.46
 │ │ │ │ │ │ │ ├─restricted by compatibility requirements with Symbolics [0c5d862f] to versions: 0.23.0-0.25.46
 │ │ │ │ │ │ │ │ └─Symbolics [0c5d862f] log: see above
 │ │ │ │ │ │ │ └─restricted by compatibility requirements with Turing [fce5fe82] to versions: 0.22.0-0.24.18, leaving only versions: 0.23.0-0.24.18
 │ │ │ │ │ │ │ └─Turing [fce5fe82] log: see above
 │ │ │ │ │ │ └─restricted by compatibility requirements with Turing [fce5fe82] to versions: 2.7.0-2.26.0 or uninstalled, leaving only versions: 2.7.0-2.26.0
 │ │ │ │ │ │ └─Turing [fce5fe82] log: see above
 │ │ │ │ │ ├─restricted by compatibility requirements with Distributions [31c24e10] to versions: [0.9.1, 0.10.0-0.20.0] or uninstalled, leaving only versions: [0.9.1, 0.10.0-0.16.6]
 │ │ │ │ │ │ └─Distributions [31c24e10] log: see above
 │ │ │ │ │ └─restricted by compatibility requirements with AdvancedPS [576499cb] to versions: 0.5.0-0.15.1 or uninstalled, leaving only versions: [0.9.1, 0.10.0-0.15.1]
 │ │ │ │ │ └─AdvancedPS [576499cb] log:
 │ │ │ │ │ ├─possible versions are: 0.1.0-0.3.3 or uninstalled
 │ │ │ │ │ └─restricted by compatibility requirements with Libtask [6f1fad26] to versions: uninstalled
 │ │ │ │ │ └─Libtask [6f1fad26] log:
 │ │ │ │ │ ├─possible versions are: 0.1.1-0.6.6 or uninstalled
 │ │ │ │ │ ├─restricted by compatibility requirements with Turing [fce5fe82] to versions: [0.1.1-0.5.3, 0.6.6]
 │ │ │ │ │ │ └─Turing [fce5fe82] log: see above
 │ │ │ │ │ ├─restricted by compatibility requirements with Libtask_jll [3ae2931a] to versions: [0.1.1-0.4.2, 0.6.0-0.6.6] or uninstalled, leaving only versions: [0.1.1-0.4.2, 0.6.6]
 │ │ │ │ │ │ └─Libtask_jll [3ae2931a] log:
 │ │ │ │ │ │ ├─possible versions are: 0.3.0-0.5.1 or uninstalled
 │ │ │ │ │ │ └─restricted by julia compatibility requirements to versions: [0.3.0-0.3.2, 0.5.0-0.5.1] or uninstalled
 │ │ │ │ │ └─restricted by compatibility requirements with Turing [fce5fe82] to versions: 0.3.1-0.5.3, leaving only versions: 0.3.1-0.4.2
 │ │ │ │ │ └─Turing [fce5fe82] log: see above
 │ │ │ │ ├─restricted by compatibility requirements with SymbolicUtils [d1185830] to versions: [0.0.1-3.1.1, 5.2.1-8.3.2] or uninstalled, leaving only versions: [1.0.0-1.4.3, 3.0.0-3.1.1, 5.2.1-8.3.2]
 │ │ │ │ │ └─SymbolicUtils [d1185830] log: see above
 │ │ │ │ ├─restricted by compatibility requirements with SpecialFunctions [276daf66] to versions: 1.1.3-8.3.2 or uninstalled, leaving only versions: [1.1.3-1.4.3, 3.0.0-3.1.1, 5.2.1-8.3.2]
 │ │ │ │ │ └─SpecialFunctions [276daf66] log: see above
 │ │ │ │ └─restricted by compatibility requirements with DiffEqBayes [ebbdde9d] to versions: [1.4.2-4.5.0, 5.6.0-5.26.0], leaving only versions: [1.4.2-1.4.3, 3.0.0-3.1.1, 5.6.0-5.26.0]
 │ │ │ │ └─DiffEqBayes [ebbdde9d] log: see above
 │ │ │ ├─restricted by compatibility requirements with Symbolics [0c5d862f] to versions: 0.1.0-1.9.1
 │ │ │ │ └─Symbolics [0c5d862f] log: see above
 │ │ │ ├─restricted by compatibility requirements with ForwardDiff [f6369f11] to versions: [0.0.8-1.0.2, 1.2.1-1.9.1], leaving only versions: [0.1.0-1.0.2, 1.2.1-1.9.1]
 │ │ │ │ └─ForwardDiff [f6369f11] log:
 │ │ │ │ ├─possible versions are: 0.9.0-0.10.25 or uninstalled
 │ │ │ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.9.0-0.10.25
 │ │ │ │ ├─restricted by compatibility requirements with DiffRules [b552c78f] to versions: 0.10.6-0.10.25 or uninstalled, leaving only versions: 0.10.6-0.10.25
 │ │ │ │ │ └─DiffRules [b552c78f] log: see above
 │ │ │ │ └─restricted by compatibility requirements with SpecialFunctions [276daf66] to versions: 0.10.9-0.10.25 or uninstalled, leaving only versions: 0.10.9-0.10.25
 │ │ │ │ └─SpecialFunctions [276daf66] log: see above
 │ │ │ └─restricted by compatibility requirements with SpecialFunctions [276daf66] to versions: [0.0.8-0.0.10, 1.0.1-1.9.1] or uninstalled, leaving only versions: [1.0.1-1.0.2, 1.2.1-1.9.1]
 │ │ │ └─SpecialFunctions [276daf66] log: see above
 │ │ └─restricted by compatibility requirements with Turing [fce5fe82] to versions: 0.2.3-0.2.18, leaving only versions: [0.2.3, 0.2.5-0.2.18]
 │ │ └─Turing [fce5fe82] log: see above
 │ ├─restricted by compatibility requirements with CUDA [052768ef] to versions: [0.4.1-0.10.4, 0.12.2-0.12.9] or uninstalled, leaving only versions: [0.4.1-0.8.0, 0.8.3, 0.12.2-0.12.9]
 │ │ └─CUDA [052768ef] log: see above
 │ ├─restricted by compatibility requirements with AbstractTrees [1520ce14] to versions: [0.4.1, 0.10.1-0.12.9] or uninstalled, leaving only versions: [0.4.1, 0.12.2-0.12.9]
 │ │ └─AbstractTrees [1520ce14] log:
 │ │ ├─possible versions are: 0.2.0-0.3.4 or uninstalled
 │ │ └─restricted by compatibility requirements with SymbolicUtils [d1185830] to versions: 0.3.0-0.3.4
 │ │ └─SymbolicUtils [d1185830] log: see above
 │ └─restricted by compatibility requirements with NNlib [872c559c] to versions: 0.8.3-0.12.9 or uninstalled, leaving only versions: 0.12.2-0.12.9
 │ └─NNlib [872c559c] log:
 │ ├─possible versions are: 0.3.2-0.8.1 or uninstalled
 │ ├─restricted by compatibility requirements with Flux [587475ba] to versions: 0.3.2-0.8.1
 │ │ └─Flux [587475ba] log: see above
 │ ├─restricted by compatibility requirements with Tracker [9f7883ad] to versions: 0.6.0-0.8.1
 │ │ └─Tracker [9f7883ad] log: see above
 │ ├─restricted by compatibility requirements with LoopVectorization [bdcacae8] to versions: [0.3.2-0.7.1, 0.7.4-0.8.1] or uninstalled, leaving only versions: [0.6.0-0.7.1, 0.7.4-0.8.1]
 │ │ └─LoopVectorization [bdcacae8] log:
 │ │ ├─possible versions are: 0.1.0-0.12.101 or uninstalled
 │ │ ├─restricted by julia compatibility requirements to versions: 0.9.0-0.12.101 or uninstalled
 │ │ └─restricted by compatibility requirements with VectorizationBase [3d5dd08c] to versions: 0.12.19-0.12.101 or uninstalled
 │ │ └─VectorizationBase [3d5dd08c] log:
 │ │ ├─possible versions are: 0.1.0-0.21.24 or uninstalled
 │ │ └─restricted by julia compatibility requirements to versions: 0.20.8-0.21.24 or uninstalled
 │ ├─restricted by compatibility requirements with Flux [587475ba] to versions: 0.7.14-0.8.1
 │ │ └─Flux [587475ba] log: see above
 │ └─restricted by compatibility requirements with NNlibCUDA [a00861dc] to versions: 0.7.21-0.8.1
 │ └─NNlibCUDA [a00861dc] log:
 │ ├─possible versions are: 0.1.0-0.2.1 or uninstalled
 │ ├─restricted by compatibility requirements with CUDA [052768ef] to versions: 0.1.4-0.2.1 or uninstalled
 │ │ └─CUDA [052768ef] log: see above
 │ └─restricted by compatibility requirements with Flux [587475ba] to versions: 0.1.0-0.2.1, leaving only versions: 0.1.4-0.2.1
 │ └─Flux [587475ba] log: see above
 └─restricted by compatibility requirements with SpecialFunctions [276daf66] to versions: 0.1.0-2.6.3 or uninstalled — no versions left
   └─SpecialFunctions [276daf66] log: see above
Stacktrace:
  [1] propagate_constraints!(graph::Pkg.Resolve.Graph, sources::Set{Int64}; log_events::Bool)
    @ Pkg.Resolve C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Resolve\graphtype.jl:1063
  [2] propagate_constraints! (repeats 2 times)
    @ C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Resolve\graphtype.jl:1000 [inlined]
  [3] simplify_graph!(graph::Pkg.Resolve.Graph, sources::Set{Int64}; clean_graph::Bool)
    @ Pkg.Resolve C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Resolve\graphtype.jl:1519
  [4] simplify_graph! (repeats 2 times)
    @ C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Resolve\graphtype.jl:1519 [inlined]
  [5] resolve_versions!(env::Pkg.Types.EnvCache, registries::Vector{Pkg.Registry.RegistryInstance}, pkgs::Vector{Pkg.Types.PackageSpec}, julia_version::VersionNumber)
    @ Pkg.Operations C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Operations.jl:335
  [6] targeted_resolve(env::Pkg.Types.EnvCache, registries::Vector{Pkg.Registry.RegistryInstance}, pkgs::Vector{Pkg.Types.PackageSpec}, preserve::Pkg.Types.PreserveLevel, julia_version::VersionNumber)
    @ Pkg.Operations C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Operations.jl:1154
  [7] tiered_resolve(env::Pkg.Types.EnvCache, registries::Vector{Pkg.Registry.RegistryInstance}, pkgs::Vector{Pkg.Types.PackageSpec}, julia_version::VersionNumber)
    @ Pkg.Operations C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Operations.jl:1139
  [8] _resolve(io::Base.TTY, env::Pkg.Types.EnvCache, registries::Vector{Pkg.Registry.RegistryInstance}, pkgs::Vector{Pkg.Types.PackageSpec}, preserve::Pkg.Types.PreserveLevel, julia_version::VersionNumber)
    @ Pkg.Operations C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Operations.jl:1160
  [9] add(ctx::Pkg.Types.Context, pkgs::Vector{Pkg.Types.PackageSpec}, new_git::Set{Base.UUID}; preserve::Pkg.Types.PreserveLevel, platform::Base.BinaryPlatforms.Platform)
    @ Pkg.Operations C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\Operations.jl:1176
 [10] add(ctx::Pkg.Types.Context, pkgs::Vector{Pkg.Types.PackageSpec}; preserve::Pkg.Types.PreserveLevel, platform::Base.BinaryPlatforms.Platform, kwargs::Base.Pairs{Symbol, Base.TTY, Tuple{Symbol}, NamedTuple{(:io,), Tuple{Base.TTY}}})
    @ Pkg.API C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:268
 [11] add(pkgs::Vector{Pkg.Types.PackageSpec}; io::Base.TTY, kwargs::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}})
    @ Pkg.API C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:149
 [12] add(pkgs::Vector{Pkg.Types.PackageSpec})
    @ Pkg.API C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:144
 [13] #add#27
    @ C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:142 [inlined]
 [14] add
    @ C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:142 [inlined]
 [15] #add#26
    @ C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:141 [inlined]
 [16] add(pkg::String)
    @ Pkg.API C:\Users\User_Name\.julia\juliaup\julia-1.7.2+0~x64\share\julia\stdlib\v1.7\Pkg\src\API.jl:141
 [17] top-level scope
    @ REPL[2]:1

```

---

<div class="post-metadata">

**Author:** ![nilshg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nilshg/32/2283_2.png) [@nilshg](https://discourse.julialang.org/u/nilshg)\
**Post date:** [February 8, 2022, 4:46pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/4 "2022-02-08T16:46:21Z")

</div>

Just tried `Interact` and `Symbolics`, works fine for me - aren’t you just showing package compatility issues?

---

<div class="post-metadata">

**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [February 8, 2022, 6:04pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/5 "2022-02-08T18:04:45Z")

</div>

Isn’t the issue just that Turing.jl isn’t updated for v1.7?

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<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 8, 2022, 6:51pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/6 "2022-02-08T18:51:01Z")

</div>

Could be. Turing seemed to install. I could try to remove it, and then install Symbolics.

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**Author:** ![nilshg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nilshg/32/2283_2.png) [@nilshg](https://discourse.julialang.org/u/nilshg)\
**Post date:** [February 8, 2022, 7:35pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/7 "2022-02-08T19:35:58Z")

</div>

Turing will install just fine, albeit it will install the last version that didn’t have a Julia version restriction, which at this point is quite outdated. Are you by any chance dumping all of your packages into the default environment? I should really write this package management PSA at some point…

> [@Should we have a package update PSA?](https://discourse.julialang.org/t/should-we-have-a-package-update-psa/61923):
>
> I’ve been tinkering with the idea of writing this for a while but never got around to it, so I’ll at least put the idea here in case anyone agrees and wants to make a start. I believe over the last few months the most frequently repeated question is “I can’t update package X to its latest version”, and always invariably the answer is: Do ]add X@versionyouwant to find out what’s holding you back; and Work with environments, as you actually don’t need ObscurePackageHoldingEverythingBack which yo…

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**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 8, 2022, 7:45pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/8 "2022-02-08T19:45:09Z")

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Yeah, I’m just adding all packages to Julia. I’ve never had time to learn about versions and environments, etc., and switching between environments. As Julia gets more users, realistically there will be more users of “my type\*”. If someone would make a tutorial video (or notebook) for “dummies”, I think that would be very useful.

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<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 9, 2022, 10:48am UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/9 "2022-02-09T10:48:32Z")

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I have removed `Turing`, but the problem with `Symbolics` persists. The first error message relates to `CUDA`.

```julia
julia> Pkg.add("Symbolics")
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package CUDA [052768ef]:
 CUDA [052768ef] log:
 ├─possible versions are: 0.1.0-3.8.0 or uninstalled
 ├─restricted by julia compatibility requirements to versions: [2.3.0, 2.5.0-3.8.0] or uninstalled
 ├─restricted by compatibility requirements with LLVM [929cbde3] to versions: 3.3.3-3.8.0 or uninstalled
 │ └─LLVM [929cbde3] log:
 │ ├─possible versions are: 0.9.0-4.7.1 or uninstalled
 │ └─restricted by julia compatibility requirements to versions: 4.0.0-4.7.1 or uninstalled
 ├─restricted by compatibility requirements with Flux [587475ba] to versions: 3.0.0-3.8.0, leaving only versions: 3.3.3-

```

I have not installed `CUDA`, but if I try, I get a similar error message.

Does `Symbolics` require `CUDA`? If not, why this error message about “Unsatisfiable requirements” for `CUDA`?

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<div class="post-metadata">

**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [February 9, 2022, 10:50am UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/10 "2022-02-09T10:50:19Z")

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Symbolics does not require CUDA

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<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 9, 2022, 10:50am UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/11 "2022-02-09T10:50:21Z")

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Hm. The problem seems to be with `Flux`. I removed `Flux`, and now both `Symbolics` and `Interact` install. [I assume that `DiffEqFlux` will not install…]

… and if I try to install `Flux` again, after having installed `Symbolics` and `Interact`, I get an error message related to `Turing` – which is not installed now (I removed it…):

```julia
julia> Pkg.add("Flux")
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package Turing [fce5fe82]:
 Turing [fce5fe82] log:
 ├─possible versions are: 0.5.0-0.20.1 or uninstalled
 ├─restricted by compatibility requirements with DiffEqBayes [ebbdde9d] to versions: 0.5.0-0.16.6
 │ └─DiffEqBayes [ebbdde9d] log:
 │ ├─possible versions are: 0.8.0-2.26.0 or uninstalled
 │ ├─restricted to versions * by an explicit requirement, leaving on

```

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<div class="post-metadata">

**Author:** ![nilshg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nilshg/32/2283_2.png) [@nilshg](https://discourse.julialang.org/u/nilshg)\
**Post date:** [February 9, 2022, 2:23pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/12 "2022-02-09T14:23:32Z")

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…and that’s why you should work in project environments. It’s unlikely that you’ll find many people willing to debug a crowded default environment, when the solution is just create a project environment and only add the packages you need. If you then run into an issue people will probably be happy to help.

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<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 9, 2022, 4:04pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/13 "2022-02-09T16:04:36Z")

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I realize that people don’t have time to debug my error messages. At the same time, I don’t find the description of environments in the documentation very “tutorial”, and I haven’t seen any tutorials on this. So if you know of such a tutorial intro to environments, I’d appreciate a link.

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<div class="post-metadata">

**Author:** ![nilshg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nilshg/32/2283_2.png) [@nilshg](https://discourse.julialang.org/u/nilshg)\
**Post date:** [February 9, 2022, 4:21pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/14 "2022-02-09T16:21:01Z")

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Unfortunately I don’t know anything better than the Pkg docs itself, but I fail to see how more is required?

[https://pkgdocs.julialang.org/dev/environments/](https://pkgdocs.julialang.org/dev/environments/)

It’s just three lines of code:

```julia
julia> mkdir("MyProject")

julia> cd("MyProject")
/Users/kristoffer/MyProject

# we can now use "." instead of a longer relative or full path:
(v1.0) pkg> activate .

```

or only two lines (if you already have the directory you want to save your environment in) or only one line (if you also start Julia in that directory).

Is there anything else you’re missing?

For diagnosing the kinds of issues you’re seeing it’s also helpful to do `] activate --temp` to create a temp environment, then add the packages you are having trouble with one by one and see when it breaks.

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<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 9, 2022, 4:38pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/15 "2022-02-09T16:38:19Z")

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This was helpful. But it is not intuitive to me that `Pkg.jl` is where to go. I searched the Julia docs:

 ![image](https://global.discourse-cdn.com/julialang/original/3X/2/5/25baed7c1c59ef56cfeceac7b21b4674e78fb8ea.png)

… and didn’t find the text there very illuminating with my background (I learned BASIC programming in high school on an Altair computer with 4 kB RAM, and FORTRAN 4 at university…)

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<div class="post-metadata">

**Author:** ![nilshg](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nilshg/32/2283_2.png) [@nilshg](https://discourse.julialang.org/u/nilshg)\
**Post date:** [February 9, 2022, 4:41pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/16 "2022-02-09T16:41:39Z")

</div>

Yes that’s a fair shout, maybe a docs PR is in order to link to Pkg from the library section on environments!

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<div class="post-metadata">

**Author:** ![BLI](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bli/32/37206_2.png) [@BLI](https://discourse.julialang.org/u/BLI)\
**Post date:** [February 10, 2022, 1:54pm UTC](https://discourse.julialang.org/t/failed-to-install-interact-diffeqflux-symbolics-on-1-7-2/76036/17 "2022-02-10T13:54:39Z")

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I’ve now read the first 4 sections of the Pkg.jl documentation, and it is very well written/illuminating.

Three things are not entirely clear to me.

1. How do I use a specific version of Julia, e.g., v1.6?

- Should I use, e.g., `juliaup` and make sure I have the relevant Julia version on my computer?
- And then start this version of Julia + build up the environment of packages?
- Will the Project.toml + Manifest.toml files contain info on the Julia version?
- Or is there another way of ensuring that I use the desired Julia version?

1. The documentation refers to cloning a Project.toml and Manifest.toml file using `git`. Does this assume that I have already installed `git` on my computer, or is `git` installed automatically on my computer when I install Julia? [I’m a `git` beginner…]

2. Is it alternatively possible to share Project.toml and Manifest.toml files as attachment to an e-mail, and have the recipient manually store these files in the chosen directory?

What happens if my Project.toml and Manifest.toml files assume a certain Julia version, and the recipient of my e-mail does not have that version of Julia installed?

Will the correct Julia version [see question 1] automatically be installed or will the user be prompted to do so manually?