# Package version conflict with MeshCatMechanisms

**URL:** <https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151>\
**Category:** New to Julia\
**Created:** [March 21, 2019, 4:06pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151 "2019-03-21T16:06:23Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![RogerP](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rogerp/32/17496_2.png) [@RogerP](https://discourse.julialang.org/u/RogerP)\
**Post date:** [March 21, 2019, 4:06pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/1 "2019-03-21T16:06:23Z")

</div>

After my daily `]up` today, I am suddenly getting a number of: `ERROR: Unsatisfiable requirements detected for package` messages.

This started with `MeshCatMechanisms` and `RigidBodySim`, so I removed them along with `MeshCat` and `MeshCatGoemetries`, which seemed to be implicated. Typed `resolve` and then `]up` and it’s OK. Reinstalling gave the original problem (pasted below).

Reading similar posts led me to suppose that the Registry might be corrupt, so I removed the `~/.julia/registries/General` folder followed by an `]up` but no improvement except that now `TexExtensions` added itself to the list of unsatisfiable requirements. This was caused by `SIUnits`. Removed that package and any other packages (including the above) that might be in anyway related. Did `resolve` (see below), `up` – everything is fine, tried to reinstall said packages but still the same.

All I can think of now is deleting everything related to Julia, including the `.julia` directory. But before I do, has anyone had similar problems today? Or is this just me?

```julia
julia> versioninfo()
Julia Version 1.1.0
Commit 80516ca202 (2019-01-21 21:24 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, skylake)

```

```julia
(v1.1) pkg> resolve
 Resolving package versions...
  Updating `~/.julia/environments/v1.1/Project.toml`
 [no changes]
  Updating `~/.julia/environments/v1.1/Manifest.toml`

```

```julia
(v1.1) pkg> add MeshCat
 Resolving package versions...
  Updating `~/.julia/environments/v1.1/Project.toml`
  [283c5d60] + MeshCat v0.6.0
  Updating `~/.julia/environments/v1.1/Manifest.toml`
  [283c5d60] + MeshCat v0.6.0
  [99f44e22] + MsgPack v0.2.0

(v1.1) pkg> add MeshCatMechanisms
 Resolving package versions...
ERROR: Unsatisfiable requirements detected for package MeshCatMechanisms [6ad125db]:
 MeshCatMechanisms [6ad125db] log:
 ├─possible versions are: [0.0.1-0.0.6, 0.1.0-0.1.1, 0.2.0-0.2.1, 0.3.0] or uninstalled
 ├─restricted to versions * by an explicit requirement, leaving only versions [0.0.1-0.0.6, 0.1.0-0.1.1, 0.2.0-0.2.1, 0.3.0]
 ├─restricted by compatibility requirements with MechanismGeometries [931e9471] to versions: [0.0.1-0.0.6, 0.1.0-0.1.1, 0.2.0-0.2.1] or uninstalled, leaving only versions: [0.0.1-0.0.6, 0.1.0-0.1.1, 0.2.0-0.2.1]
 │ └─MechanismGeometries [931e9471] log:
 │ ├─possible versions are: [0.0.1-0.0.4, 0.1.0-0.1.2, 0.2.0] or uninstalled
 │ └─restricted to versions 0.1.2 by an explicit requirement, leaving only versions 0.1.2
 └─restricted by compatibility requirements with MeshCat [283c5d60] to versions: 0.3.0 or uninstalled — no versions left
   └─MeshCat [283c5d60] log:
     ├─possible versions are: [0.0.1-0.0.3, 0.1.0-0.1.2, 0.2.0-0.2.3, 0.3.0, 0.4.0, 0.5.0, 0.6.0] or uninstalled
     └─restricted to versions 0.6.0 by an explicit requirement, leaving only versions 0.6.0

```

```julia
add RigidBodySim
 Resolving package versions...
ERROR: Unsatisfiable requirements detected for package MeshCatMechanisms [6ad125db]:
 MeshCatMechanisms [6ad125db] log:
 ├─possible versions are: [0.0.1-0.0.6, 0.1.0-0.1.1, 0.2.0-0.2.1, 0.3.0] or uninstalled
 ├─restricted by compatibility requirements with MechanismGeometries [931e9471] to versions: [0.0.1-0.0.6, 0.1.0-0.1.1, 0.2.0-0.2.1] or uninstalled
 │ └─MechanismGeometries [931e9471] log:
 │ ├─possible versions are: [0.0.1-0.0.4, 0.1.0-0.1.2, 0.2.0] or uninstalled
 │ └─restricted to versions 0.1.2 by an explicit requirement, leaving only versions 0.1.2
 ├─restricted by compatibility requirements with MeshCat [283c5d60] to versions: 0.3.0 or uninstalled, leaving only versions: uninstalled
 │ └─MeshCat [283c5d60] log:
 │ ├─possible versions are: [0.0.1-0.0.3, 0.1.0-0.1.2, 0.2.0-0.2.3, 0.3.0, 0.4.0, 0.5.0, 0.6.0] or uninstalled
 │ └─restricted to versions 0.6.0 by an explicit requirement, leaving only versions 0.6.0
 └─restricted by compatibility requirements with RigidBodySim [e61f16d8] to versions: [0.1.1, 0.2.0-0.2.1, 0.3.0] — no versions left
   └─RigidBodySim [e61f16d8] log:
     ├─possible versions are: [0.0.1, 0.1.0, 0.2.0, 0.3.0, 1.0.0, 1.1.0] or uninstalled
     ├─restricted to versions * by an explicit requirement, leaving only versions [0.0.1, 0.1.0, 0.2.0, 0.3.0, 1.0.0, 1.1.0]
     └─restricted by julia compatibility requirements to versions: [0.3.0, 1.0.0, 1.1.0] or uninstalled, leaving only versions: [0.3.0, 1.0.0, 1.1.0]

```

---

<div class="post-metadata">

**Author:** ![StefanKarpinski](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stefankarpinski/32/24_2.png) [@StefanKarpinski](https://discourse.julialang.org/u/StefanKarpinski)\
**Post date:** [March 21, 2019, 4:08pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/2 "2019-03-21T16:08:08Z")

</div>

I was just able to `add MeshCat` successfully. What else do you have in your environment?

---

<div class="post-metadata">

**Author:** ![RogerP](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rogerp/32/17496_2.png) [@RogerP](https://discourse.julialang.org/u/RogerP)\
**Post date:** [March 21, 2019, 4:10pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/3 "2019-03-21T16:10:10Z")

</div>

`MeshCat` is no problem for me either – it’s `MeshCatMechanisms` that doesn’t install.

I have a huge amount in my environment!! I’ll try doing `gc` to see what happens …

Only 444 packages deleted!!

```julia
   Deleted 444 package installations (4.106 GiB)

(v1.1) pkg> resolve
 Resolving package versions...
  Updating `~/.julia/environments/v1.1/Project.toml`
 [no changes]
  Updating `~/.julia/environments/v1.1/Manifest.toml`
 [no changes]

(v1.1) pkg> add MeshCatMechanisms
 Resolving package versions...
ERROR: Unsatisfiable requirements detected for package MeshCatMechanisms [6ad125db]:

```

---

<div class="post-metadata">

**Author:** ![RogerP](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rogerp/32/17496_2.png) [@RogerP](https://discourse.julialang.org/u/RogerP)\
**Post date:** [March 21, 2019, 4:17pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/4 "2019-03-21T16:17:38Z")

</div>

This is what I have now…

```julia
(v1.1) pkg> st
    Status `~/.julia/environments/v1.1/Project.toml`
  [b6462baa] ApcsMessageTypes v0.1.0 [`../../../Documents/Julia/APCS/Telemetry/ApcsMessageTypes.jl`]
  [c52e3926] Atom v0.8.1
  [6e4b80f9] BenchmarkTools v0.4.2
  [c938a46a] Builder v0.1.0 [`../../../Documents/Julia/APCS/TARM/Builder.jl`]
  [3895d2a7] CUDAapi v0.6.2
  [34f1f09b] ClusterManagers v0.3.2
  [3da002f7] ColorTypes v0.7.5
  [34da2185] Compat v1.4.0 ⚲
  [a81c6b42] Compose v0.7.3
  [150eb455] CoordinateTransformations v0.5.0
  [a8cc5b0e] Crayons v3.0.0
  [1f15a43c] CxxWrap v0.8.1
  [a93c6f00] DataFrames v0.17.1
  [1313f7d8] DataFramesMeta v0.4.1
  [9a8bc11e] DataStreams v0.4.1
  [459566f4] DiffEqCallbacks v2.5.2
  [aae7a2af] DiffEqFlux v0.2.0
  [0c46a032] DifferentialEquations v6.3.0
  [31c24e10] Distributions v0.17.0
  [ffbed154] DocStringExtensions v0.7.0
  [e30172f5] Documenter v0.21.5
  [61744808] DynamicalSystems v1.2.0
  [587475ba] Flux v0.7.3
  [f6369f11] ForwardDiff v0.10.3
  [de31a74c] FunctionalCollections v0.5.0
  [c91e804a] Gadfly v1.0.1
  [4d00f742] GeometryTypes v0.7.3
  [4c0ca9eb] Gtk v0.16.5
  [7073ff75] IJulia v1.18.0
  [6218d12a] ImageMagick v0.7.1
  [d3863d7c] InteractBase v0.9.1
  [a98d9a8b] Interpolations v0.11.2
  [682c06a0] JSON v0.20.0
  [e5e0dc1b] Juno v0.6.0
  [1902f260] Knet v1.2.1
  [0ea44823] LCMCore v0.5.4
  [fc18253b] LazyJSON v0.1.1
  [194296ae] LibPQ v0.7.0
  [9c8b4983] LightXML v0.8.0
  [39f5be34] LoopThrottle v0.0.3
  [ee78f7c6] Makie v0.9.3 #master (https://github.com/JuliaPlots/Makie.jl.git)
  [b8f27783] MathOptInterface v0.8.4
  [eff96d63] Measurements v2.0.0
  [931e9471] MechanismGeometries v0.1.2
  [283c5d60] MeshCat v0.6.0
  [961ee093] ModelingToolkit v0.1.0
  [a975b10e] Mux v0.6.0
  [0db19996] NBInclude v2.1.0
  [ab2f91bb] OSQP v0.5.1
  [510215fc] Observables v0.2.3
  [bac558e1] OrderedCollections v1.0.2
  [1dea7af3] OrdinaryDiffEq v5.4.0
  [65888b18] ParameterizedFunctions v4.1.1
  [41fac6d6] Parametron v0.8.0
  [91a5bcdd] Plots v0.23.2
  [438e738f] PyCall v1.90.0
  [d330b81b] PyPlot v2.8.0
  [94ee1d12] Quaternions v0.3.1
  [6f49c342] RCall v0.13.2
  [ce6b1742] RDatasets v0.6.1
  [295af30f] Revise v2.0.0
  [366cf18f] RigidBodyDynamics v1.4.0
  [82daab19] RigidBodyTreeInspector v0.5.0
  [22415677] RobotOS v0.7.0
  [6038ab10] Rotations v0.11.1
  [9dd7a2f8] SeriesAccelerators v0.2.0
  [6303bc30] Signals v1.1.0
  [90137ffa] StaticArrays v0.10.3
  [24249f21] SymPy v0.9.0
  [dc548174] TerminalMenus v0.1.0
  [94a5cd58] TypeSortedCollections v1.0.0
  [c2297ded] ZMQ v1.0.0
  [44cfe95a] Pkg 
  [9a3f8284] Random 

```

---

<div class="post-metadata">

**Author:** ![StefanKarpinski](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stefankarpinski/32/24_2.png) [@StefanKarpinski](https://discourse.julialang.org/u/StefanKarpinski)\
**Post date:** [March 21, 2019, 4:20pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/5 "2019-03-21T16:20:44Z")

</div>

MeshCat and MeshCatMechanisms both install just fine. It seems like something else in your environment has conflicting version requirements with one of them. The current version resolver is unfortunately not very helpful with telling you what the problem is. I would try getting rid of packages that you don’t need.

---

<div class="post-metadata">

**Author:** ![RogerP](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rogerp/32/17496_2.png) [@RogerP](https://discourse.julialang.org/u/RogerP)\
**Post date:** [March 21, 2019, 4:22pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/6 "2019-03-21T16:22:14Z")

</div>

OK, will do, many thanks!

---

<div class="post-metadata">

**Author:** ![rdeits](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rdeits/32/286_2.png) [@rdeits](https://discourse.julialang.org/u/rdeits)\
**Post date:** [March 21, 2019, 4:29pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/7 "2019-03-21T16:29:30Z")

</div>

> [@RogerP](#):
>
> restricted to versions 0.1.2 by an explicit requirement, leaving only versions 0.1.2

Your MechanismGeometries reports that it is restricted to version 0.1.2, which is too old for the latest MeshCatMechanisms. Can you try `pkg> free MechanismGeometries` ?

---

<div class="post-metadata">

**Author:** ![RogerP](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rogerp/32/17496_2.png) [@RogerP](https://discourse.julialang.org/u/RogerP)\
**Post date:** [March 21, 2019, 4:40pm UTC](https://discourse.julialang.org/t/package-version-conflict-with-meshcatmechanisms/22151/8 "2019-03-21T16:40:07Z")

</div>

Probably would have worked but in the mean time I took the more draconian action of deleting `.julia/..` and everything is fine except for my own packages! 🙂 Problem now gone away!

Thank you.

Edit: Obviously reinstalling everything I need, which actually is a lot!