# Unable to upgrade to latest version of MCMCDiagnosticTools

**URL:** <https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321>\
**Category:** New to Julia\
**Tags:** question\
**Created:** [February 28, 2023, 10:32am UTC](https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321 "2023-02-28T10:32:42Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ashim\_Kapoor](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ashim_kapoor/32/47300_2.png) [@Ashim\_Kapoor](https://discourse.julialang.org/u/Ashim_Kapoor)\
**Post date:** [February 28, 2023, 10:32am UTC](https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321/1 "2023-02-28T10:32:42Z")

</div>

Hello everyone,

Here is what the software is saying to me :

```julia
(@v1.8) pkg> status --outdated
Status `~/.julia/environments/v1.8/Project.toml`
⌅ [be115224] MCMCDiagnosticTools v0.2.6 (<v0.3.1): MCMCChains

(@v1.8) pkg> add MCMCDiagnosticTools@0.3.1
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package MCMCChains [c7f686f2]:
 MCMCChains [c7f686f2] log:
 ├─possible versions are: 0.2.4-5.7.1 or uninstalled
 ├─restricted to versions * by an explicit requirement, leaving only versions 0.2.4-5.7.1
 ├─restricted by compatibility requirements with MCMCDiagnosticTools [be115224] to versions: 0.2.4-4.14.1 or uninstalled, leaving only versions: 0.2.4-4.14.1
 │ └─MCMCDiagnosticTools [be115224] log:
 │ ├─possible versions are: 0.1.0-0.3.1 or uninstalled
 │ └─restricted to versions 0.3.1 by an explicit requirement, leaving only versions 0.3.1
 └─restricted by compatibility requirements with Turing [fce5fe82] to versions: 5.0.0-5.7.1 — no versions left
   └─Turing [fce5fe82] log:
     ├─possible versions are: 0.5.0-0.24.0 or uninstalled
     └─restricted to versions 0.23.2-0.24 by CRRao [49d1be55], leaving only versions 0.23.2-0.24.0
       └─CRRao [49d1be55] log:
         ├─possible versions are: 0.1.0 or uninstalled
         └─CRRao [49d1be55] is fixed to version 0.1.0

(@v1.8) pkg> 

```

Can someone explain to me how I can upgrade to the latest version of MCMCDiagnosticTools?

Many thanks.

---

<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 28, 2023, 10:41am UTC](https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321/2 "2023-02-28T10:41:53Z")

</div>

It’s really useful to format your code with triple backticks ````` to make it legible.

In short, you have `MCMCDiagnosticTools` in your environment which restricts `MCMCChains` to versions `<=4.14`, and you also have `Turing` in your environment which is restricted to `>=0.23.2` by `CRRao`. `Turing@0.23.2` does not allow `MCMCChains` below version `5` though, so the environment cannot be resolved.

It also looks like you are installing all your packages in the default environment - don’t do this, work with project specific environments instead to minimise incompatibilities like this.

---

<div class="post-metadata">

**Author:** ![Ashim\_Kapoor](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ashim_kapoor/32/47300_2.png) [@Ashim\_Kapoor](https://discourse.julialang.org/u/Ashim_Kapoor)\
**Post date:** [February 28, 2023, 11:37am UTC](https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321/3 "2023-02-28T11:37:29Z")

</div>

@nilshg Many thanks for your reply.

I have added the ` ` ``` around the code as you suggested.

I have another query. I need Turing / CRRao / MCMCChains for my analysis.

On carefully examining my analysis, I do not need MCMCDiagnosticTools.

But now I am curious, how would I fix this if I did needed MCMCDIagnosticTools?

---

<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 28, 2023, 11:56am UTC](https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321/4 "2023-02-28T11:56:14Z")

</div>

You would need to make a PR to one of the packages to make them compatible - most likely in this case to `MCMCChains` to allow a more recent version of `MCMCDiagnosticTools`.

In this specific case as far as I understand `CRRao` is just a wrapper around GLM and Turing so you could just use the underlying packages rather than `CRRao`.

---

<div class="post-metadata">

**Author:** ![Ashim\_Kapoor](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ashim_kapoor/32/47300_2.png) [@Ashim\_Kapoor](https://discourse.julialang.org/u/Ashim_Kapoor)\
**Post date:** [February 28, 2023, 11:57am UTC](https://discourse.julialang.org/t/unable-to-upgrade-to-latest-version-of-mcmcdiagnostictools/95321/5 "2023-02-28T11:57:29Z")

</div>

Dear @nilshg,

Many thanks for that.