# Need help to fix a Pluto downgrade when adding another package
**URL:** https://discourse.julialang.org/t/need-help-to-fix-a-pluto-downgrade-when-adding-another-package/82698
**Category:** Package Management
**Tags:** question
**Created:** [June 13, 2022, 6:10pm UTC](https://discourse.julialang.org/t/need-help-to-fix-a-pluto-downgrade-when-adding-another-package/82698 "2022-06-13T18:10:08Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@ederag](https://discourse.julialang.org/u/ederag)
#### Post date: [June 13, 2022, 6:10pm UTC](https://discourse.julialang.org/t/need-help-to-fix-a-pluto-downgrade-when-adding-another-package/82698/1 "2022-06-13T18:10:08Z")
Adding a package is downgrading Pluto, an MWE showing the error is shown below.
Can it be solved ? Or how to find out where to file an issue ?
[Interpreting and resolving version conflicts](https://pkgdocs.julialang.org/v1/managing-packages/#conflicts) is usually enough, but I’d need some help here.
```julia
pkg> activate --temp
(jl_RSzy0a) pkg> add CairoMakie
(jl_RSzy0a) pkg> add Pluto
(jl_RSzy0a) pkg> status
Status `/tmp/jl_RSzy0a/Project.toml`
[13f3f980] CairoMakie v0.8.5
[c3e4b0f8] Pluto v0.19.8
# so far so good
(jl_RSzy0a) pkg> add QuantumOptics
[6e0679c1] + QuantumOptics v1.0.4
...
[34da2185] ↓ Compat v4.1.0 ⇒ v3.45.0
...
[77ba4419] ↓ NaNMath v1.0.0 ⇒ v0.3.7
# In my real environment
# (CairoMakie, Combinatorics, DataFrames, HDF5, LaTeXStrings, MakieTeX,
# OffsetArrays, Parameters, PhysicalConstants, PlutoExtracters, PlutoLinks,
# PlutoUI, StatsBase, UnicodePlots, Unitful)
# those downgrades trigger a downgrade of Pluto...
# now with --preserve=all
pkg> activate --temp
(jl_b6Cy3c) pkg> add CairoMakie
(jl_b6Cy3c) pkg> add Pluto
(jl_b6Cy3c) pkg> status
Status `/tmp/jl_b6Cy3c/Project.toml`
[13f3f980] CairoMakie v0.8.5
[c3e4b0f8] Pluto v0.19.8
(jl_b6Cy3c) pkg> status -m NaNMath
Status `/tmp/jl_b6Cy3c/Manifest.toml`
[77ba4419] NaNMath v1.0.0
# found --preserve there (thanks !):
# https://discourse.julialang.org/t/it-takes-several-minutes-to-add-a-single-package/70704/7
(jl_b6Cy3c) pkg> add --preserve=all QuantumOptics
Resolving package versions...
ERROR: Unsatisfiable requirements detected for package NLsolve [2774e3e8]:
NLsolve [2774e3e8] log:
├─possible versions are: 4.0.0-4.5.1 or uninstalled
├─restricted by compatibility requirements with Reexport [189a3867] to versions: 4.5.1 or uninstalled
│ └─Reexport [189a3867] log:
│ ├─possible versions are: 0.2.0-1.2.2 or uninstalled
│ └─restricted to versions 1.2.2 by an explicit requirement, leaving only versions 1.2.2
├─restricted by compatibility requirements with OrdinaryDiffEq [1dea7af3] to versions: 4.3.0-4.5.1, leaving only versions: 4.5.1
│ └─OrdinaryDiffEq [1dea7af3] log:
│ ├─possible versions are: 4.0.0-6.15.0 or uninstalled
│ ├─restricted by compatibility requirements with QuantumOptics [6e0679c1] to versions: 4.0.0-6.15.0
│ │ └─QuantumOptics [6e0679c1] log:
│ │ ├─possible versions are: 0.5.5-1.0.4 or uninstalled
│ │ ├─restricted to versions * by an explicit requirement, leaving only versions 0.5.5-1.0.4
│ │ ├─restricted by compatibility requirements with Compat [34da2185] to versions: 0.6.0-1.0.4 or uninstalled, leaving only versions: 0.6.0-1.0.4
│ │ │ └─Compat [34da2185] log:
│ │ │ ├─possible versions are: 1.0.0-4.1.0 or uninstalled
│ │ │ └─restricted to versions 4.1.0 by an explicit requirement, leaving only versions 4.1.0
│ │ ├─restricted by compatibility requirements with FFTW [7a1cc6ca] to versions: [0.5.5, 0.6.6-1.0.4] or uninstalled, leaving only versions: 0.6.6-1.0.4
│ │ │ └─FFTW [7a1cc6ca] log:
│ │ │ ├─possible versions are: 0.1.0-1.4.6 or uninstalled
│ │ │ └─restricted to versions 1.4.6 by an explicit requirement, leaving only versions 1.4.6
│ │ └─restricted by compatibility requirements with Reexport [189a3867] to versions: [0.5.5-0.6.8, 0.8.3-1.0.4] or uninstalled, leaving only versions: [0.6.6-0.6.8, 0.8.3-1.0.4]
│ │ └─Reexport [189a3867] log: see above
│ ├─restricted by compatibility requirements with DataStructures [864edb3b] to versions: 5.42.4-6.15.0 or uninstalled, leaving only versions: 5.42.4-6.15.0
│ │ └─DataStructures [864edb3b] log:
│ │ ├─possible versions are: 0.9.0-0.18.13 or uninstalled
│ │ └─restricted to versions 0.18.13 by an explicit requirement, leaving only versions 0.18.13
│ ├─restricted by compatibility requirements with StaticArrays [90137ffa] to versions: 5.46.0-6.15.0 or uninstalled, leaving only versions: 5.46.0-6.15.0
│ │ └─StaticArrays [90137ffa] log:
│ │ ├─possible versions are: 0.8.0-1.4.7 or uninstalled
│ │ └─restricted to versions 1.4.7 by an explicit requirement, leaving only versions 1.4.7
│ └─restricted by compatibility requirements with Adapt [79e6a3ab] to versions: [4.0.0-5.39.1, 5.48.0-6.15.0] or uninstalled, leaving only versions: 5.48.0-6.15.0
│ └─Adapt [79e6a3ab] log:
│ ├─possible versions are: 0.3.0-3.3.3 or uninstalled
│ └─restricted to versions 3.3.3 by an explicit requirement, leaving only versions 3.3.3
└─restricted by compatibility requirements with LineSearches [d3d80556] to versions: uninstalled — no versions left
└─LineSearches [d3d80556] log:
├─possible versions are: 7.0.0-7.1.1 or uninstalled
└─restricted by compatibility requirements with NaNMath [77ba4419] to versions: uninstalled
└─NaNMath [77ba4419] log:
├─possible versions are: 0.3.2-1.0.0 or uninstalled
└─restricted to versions 1.0.0 by an explicit requirement, leaving only versions 1.0.0
```
Done with julia-1.7.3
---
### Author:  [@ederag](https://discourse.julialang.org/u/ederag)
#### Post date: [June 14, 2022, 6:41am UTC](https://discourse.julialang.org/t/need-help-to-fix-a-pluto-downgrade-when-adding-another-package/82698/2 "2022-06-14T06:41:48Z")
It was `LineSearches`, and should be solved when [PR #161](https://github.com/JuliaNLSolvers/LineSearches.jl/pull/161) is merged.
_It all makes sense to me now (IIUC):_
The key sentence is “`restricted by compatibility requirements with LineSearches`”.
In the `compat` section, there is `NaNMath = "0.3"`.
>
This restriction is incompatible with the `NaNMath = "1.0.0"` of another package
(which one it is not said, as there might be several).
---
### Author:  [@ederag](https://discourse.julialang.org/u/ederag)
#### Post date: [August 3, 2022, 4:30pm UTC](https://discourse.julialang.org/t/need-help-to-fix-a-pluto-downgrade-when-adding-another-package/82698/3 "2022-08-03T16:30:26Z")
It has been reported as [Bump NaNMath · Issue #158 · JuliaNLSolvers/LineSearches.jl · GitHub](https://github.com/JuliaNLSolvers/LineSearches.jl/issues/158).
In order to help reviewing [Changed Julia to v1.6 and NaNMath to v1 by truedichotomy · Pull Request #161 · JuliaNLSolvers/LineSearches.jl · GitHub](https://github.com/JuliaNLSolvers/LineSearches.jl/pull/161),
I just prepared a [switch to github CI](https://github.com/JuliaNLSolvers/LineSearches.jl/pull/163) (since appveyor is broken),
but “First-time contributors need a maintainer to approve running workflows”.
Could someone with access please unlock this ?