# Using a package imports some other unwanted packages, how to find out where is the unwanted package from?
**URL:** https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041
**Category:** General Usage
**Tags:** package, module
**Created:** [October 19, 2021, 3:16pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041 "2021-10-19T15:16:27Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@JianghuiDu](https://discourse.julialang.org/u/JianghuiDu)
#### Post date: [October 19, 2021, 3:16pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041/1 "2021-10-19T15:16:27Z")
I found out some unwanted package A is imported and cause name space conflict with my own module Main. I didn’t import/using package A, so it must be loaded by other other package that I import/using. How could I find out which package loaded package A?
---
### Author:  [@Henrique\_Becker](https://discourse.julialang.org/u/Henrique_Becker)
#### Post date: [October 19, 2021, 3:39pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041/2 "2021-10-19T15:39:21Z")
I may be wrong here, but I think `import`ing or `using` a package/module into your code should not bring any other module/package into your namespace besides the explicited one. Are you sue this is what is happening? Can you post the error message?
---
### Author:  [@albheim](https://discourse.julialang.org/u/albheim)
#### Post date: [October 19, 2021, 3:40pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041/3 "2021-10-19T15:40:27Z")
You can always go through your packages manually like this
```julia
julia> using B
julia> A
ERROR: UndefVarError: A not defined
julia> using C
julia> A
A
```
where we see that (in this example) `B` was not exporting `A` but `C` was.
---
### Author:  [@JianghuiDu](https://discourse.julialang.org/u/JianghuiDu)
#### Post date: [October 19, 2021, 3:44pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041/4 "2021-10-19T15:44:19Z")
This is a bit tedious when you import many packages. Is there a shortcut?
---
### Author:  [@JianghuiDu](https://discourse.julialang.org/u/JianghuiDu)
#### Post date: [October 19, 2021, 3:48pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041/5 "2021-10-19T15:48:57Z")
I found the culprit.
Somehow using Plots also loads`alpha` from package `ColorTypes`
```julia
using Plots
julia> ColorTypes.alpha
alpha (generic function with 5 methods)
```
This conflict with my `const alpha =1`
What I don’t understand is that in `Plots` I don’t see its dependence on `ColorTypes`
So is it true that import/using one package won’t load other packages?
---
### Author:  [@albheim](https://discourse.julialang.org/u/albheim)
#### Post date: [October 19, 2021, 3:57pm UTC](https://discourse.julialang.org/t/using-a-package-imports-some-other-unwanted-packages-how-to-find-out-where-is-the-unwanted-package-from/70041/7 "2021-10-19T15:57:51Z")
> [@JianghuiDu](#):
>
> So is it true that import/using one package won’t load other packages?
I believe not, one package can export whatever they want and they may export things from other packages.
> [@JianghuiDu](#):
>
> What I don’t understand is that in `Plots` I don’t see its dependence on `ColorTypes`
No direct dependance, but
```julia
(@v1.6) pkg> activate --temp
Activating new environment at `/tmp/jl_bxylqu/Project.toml`
(jl_bxylqu) pkg> st
Status `/tmp/jl_bxylqu/Project.toml` (empty project)
(jl_bxylqu) pkg> add Plots
Updating registry at `~/.julia/registries/General`
Resolving package versions...
Installed Latexify ─────── v0.15.7
Installed StatsBase ────── v0.33.12
Installed ChainRulesCore ─ v1.10.0
Updating `/tmp/jl_bxylqu/Project.toml`
[91a5bcdd] + Plots v1.22.6
Updating `/tmp/jl_bxylqu/Manifest.toml`
[79e6a3ab] + Adapt v3.3.1
[d360d2e6] + ChainRulesCore v1.10.0
[35d6a980] + ColorSchemes v3.15.0
[3da002f7] + ColorTypes v0.11.0
...
```
so it is somewhere in the dependancy tree.