# Where to store custom packages?
**URL:** https://discourse.julialang.org/t/where-to-store-custom-packages/25982
**Category:** New to Julia
**Tags:** question
**Created:** [July 3, 2019, 12:55pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982 "2019-07-03T12:55:02Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Luigi\_Marongiu](https://discourse.julialang.org/u/Luigi_Marongiu)
#### Post date: [July 3, 2019, 12:55pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/1 "2019-07-03T12:55:02Z")
dear all,
I am writing some scripts containing some functions that I could use in the future. Where shall I save the file? Can I simply load the script with `using`?
Thank you
---
### Author:  [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [July 3, 2019, 1:46pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/2 "2019-07-03T13:46:04Z")
Store it wherever you feel like, “install” it (i.e. make it available to `using`) by `Pkg.develop`ing the path to it.
---
### Author:  [@Tilstandsrommet](https://discourse.julialang.org/u/Tilstandsrommet)
#### Post date: [July 4, 2019, 12:16pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/3 "2019-07-04T12:16:56Z")
Hi again Fredrik.
I tried to develop my own package from my working directory, but it does not work:
```julia
(v1.1) pkg> develop C:/Users/sindre.abrahamsen/juliafiler
[ Info: Assigning UUID df5de59a-cb49-5d19-96de-9b3899e6645c to juliafiler
Resolving package versions...
Updating `C:\Users\sindre.abrahamsen\.julia\environments\v1.1\Project.toml`
[no changes]
Updating `C:\Users\sindre.abrahamsen\.julia\environments\v1.1\Manifest.toml`
[no changes]
julia> using MyModule
ERROR: ArgumentError: Package MyModule not found in current path:
- Run `import Pkg; Pkg.add("MyModule")` to install the MyModule package.
julia> import Pkg
(v1.1) pkg> add MyModule
ERROR: The following package names could not be resolved:
* MyModule (not found in project, manifest or registry)
Please specify by known `name=uuid`.
```
---
### Author:  [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [July 4, 2019, 12:26pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/4 "2019-07-04T12:26:09Z")
Whats the content of `C:/Users/sindre.abrahamsen/juliafiler`? Pkg expects it to be a package, e.g. something with a `Project.toml` and a `src/MyModule.jl` file which defines the `MyModule`.
Here is an example:
```julia
$ tree /tmp/local-packages/
/tmp/local-packages/
├── LocalPackage
│ ├── Project.toml
│ └── src
│ └── LocalPackage.jl
4 directories, 4 files
$ julia -q --project=$(mktemp -d)
(tmp.ABVpKGjmuJ) pkg> develop /tmp/local-packages/LocalPackage
Resolving package versions...
Updating `/tmp/tmp.ABVpKGjmuJ/Project.toml`
[6b6a5c98] + LocalPackage v0.1.0 [`/tmp/local-packages/LocalPackage`]
Updating `/tmp/tmp.ABVpKGjmuJ/Manifest.toml`
[6b6a5c98] + LocalPackage v0.1.0 [`/tmp/local-packages/LocalPackage`]
(tmp.ABVpKGjmuJ) pkg> st
Status `/tmp/tmp.ABVpKGjmuJ/Project.toml`
[6b6a5c98] LocalPackage v0.1.0 [`/tmp/local-packages/LocalPackage`]
julia> using LocalPackageA
[Info: Precompiling LocalPackageA [6b6a5c98-9e56-11e9-0c7c-6bf820af5e25]
julia> LocalPackageA.greet()
Hello World!
```
---
### Author:  [@Tilstandsrommet](https://discourse.julialang.org/u/Tilstandsrommet)
#### Post date: [July 4, 2019, 12:59pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/5 "2019-07-04T12:59:24Z")
I made a new folder
```julia
julia> pwd()
"C:\\Users\\sindre.abrahamsen\\juliamodules"
```
I developed the directory:
```julia
(v1.1) pkg> develop C:/Users/sindre.abrahamsen/juliamodules
[ Info: Assigning UUID 7f3e4f07-f9d7-511a-90fe-184c4798bfcf to juliamodules
Resolving package versions...
Updating `C:\Users\sindre.abrahamsen\.julia\environments\v1.1\Project.toml`
[7f3e4f07] + juliamodules v0.0.0 [`C:/Users/sindre.abrahamsen/juliamodules`]
Updating `C:\Users\sindre.abrahamsen\.julia\environments\v1.1\Manifest.toml`
[7f3e4f07] + juliamodules v0.0.0 [`C:/Users/sindre.abrahamsen/juliamodules`]
```
I did a `generate MyModule` to create the `Project.toml` and src folder. Then I tried to add the package:
```julia
(v1.1) pkg> add MyModule
[ Info: resolving package specifier `MyModule` as a directory at `C:\Users\sindre.abrahamsen\juliamodules\MyModule`.
Cloning git-repo `MyModule`
ERROR: Git repository not found at 'MyModule'
```
---
### Author:  [@Tilstandsrommet](https://discourse.julialang.org/u/Tilstandsrommet)
#### Post date: [July 4, 2019, 1:12pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/6 "2019-07-04T13:12:44Z")
`using MyModule` does not work. Both with and without the preceeding dot `.MyModule`.
Below is the status of the packages. As you can see, the juøiamodules is included after i did `develop`
```julia
(v1.1) pkg> status
Status `C:\Users\sindre.abrahamsen\.julia\environments\v1.1\Project.toml`
[c52e3926] Atom v0.8.7
[7073ff75] IJulia v1.18.1
[e5e0dc1b] Juno v0.7.0
[5fb14364] OhMyREPL v0.5.1
[91a5bcdd] Plots v0.25.2
[295af30f] Revise v2.1.6
→ [7f3e4f07] juliamodules v0.0.0 [`C:/Users/sindre.abrahamsen/juliamodules`]
┌ Warning: Some packages (indicated with a red arrow) are not downloaded, use `instantiate` to instantiate the current environment
└ @ Pkg.Display C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.1\Pkg\src\Display.jl:220
```
---
### Author:  [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [July 4, 2019, 1:21pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/7 "2019-07-04T13:21:51Z")
> [@Tilstandsrommet](#):
>
> I developed the directory:
> [@Tilstandsrommet](#):
>
> I did a `generate MyModule` to create the `Project.toml` and src folder.
You have to do it the other way around, files have to exist at the time of `develop`. Also, it seems like you are trying to `develop` a folder where you keep multiple packages, you should `develop` the package folder itself.
---
### Author:  [@Tilstandsrommet](https://discourse.julialang.org/u/Tilstandsrommet)
#### Post date: [July 5, 2019, 8:03am UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/8 "2019-07-05T08:03:45Z")
Thanks! Now everything works! Even Revise works as expected!
---
### Author:  [@Luigi\_Marongiu](https://discourse.julialang.org/u/Luigi_Marongiu)
#### Post date: [July 9, 2019, 10:13am UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/9 "2019-07-09T10:13:13Z")
Sorry but, as a novice, I did not understand. The modules I am building are working in progress, so I would like to load them with `using MyModule` but without having to install it every time I change something. Since I understand that `Pkg add` uses official packages stored in GitHub, how can I install my own packages, which contain the modules? From the question of Tilstandsrommet looks to me that they need to be in a specific folder, for instance `.julia\environments\v1.1\Project.toml`. Can I create a symbolic link there to a more convinient folder, for instance `~/myScripts`?
---
### Author:  [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [July 9, 2019, 10:50am UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/10 "2019-07-09T10:50:52Z")
No, store them wherever you want, and make them available to `using` with `Pkg.develop`, see [Where to store custom packages? - #2 by fredrikekre](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/2)
---
### Author:  [@Luigi\_Marongiu](https://discourse.julialang.org/u/Luigi_Marongiu)
#### Post date: [July 9, 2019, 12:30pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/11 "2019-07-09T12:30:43Z")
I got this:
```julia
julia> Pkg.develop(PackageSpec(path="/home/gigiux/Documents/scripts/SelMa.jl"))
Updating registry at `~/.julia/registries/General`
Updating git-repo `https://github.com/JuliaRegistries/General.git`
Cloning git-repo `/home/gigiux/Documents/scripts/SelMa.jl`
ERROR: failed to clone from /home/gigiux/Documents/scripts/SelMa.jl, error: GitError(Code:ERROR, Class:Net, unsupported URL protocol)
Stacktrace:
[1] pkgerror(::String) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/Types.jl:120
[2] #clone#2(::Nothing, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::String, ::String) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/GitTools.jl:107
[3] clone at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/GitTools.jl:88 [inlined]
[4] (::getfield(Pkg.Types, Symbol("##26#29")){Bool,Pkg.Types.Context,Array{Pkg.Types.PackageSpec,1}})(::LibGit2.CachedCredentials) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/Types.jl:547
[5] shred!(::getfield(Pkg.Types, Symbol("##26#29")){Bool,Pkg.Types.Context,Array{Pkg.Types.PackageSpec,1}}, ::LibGit2.CachedCredentials) at ./secretbuffer.jl:184
[6] #add_or_develop#13(::Symbol, ::Bool, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function, ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/Types.jl:513
[7] #add_or_develop at ./none:0 [inlined]
[8] #add_or_develop#12 at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/API.jl:29[inlined]
[9] #add_or_develop at ./none:0 [inlined]
[10] #add_or_develop#10 at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/API.jl:27 [inlined]
[11] #add_or_develop at ./none:0 [inlined]
[12] #develop#19 at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/API.jl:70 [inlined]
[13] develop(::Pkg.Types.PackageSpec) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/API.jl:70
[14] top-level scope at none:0
julia>
```
---
### Author:  [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)
#### Post date: [July 9, 2019, 12:36pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/12 "2019-07-09T12:36:21Z")
This:
> [@Luigi\_Marongiu](#):
>
> julia\> Pkg.develop(PackageSpec(path=“/home/gigiux/Documents/scripts/SelMa.jl”))
looks like the same misunderstanding as
> [@fredrikekre](#):
>
> Also, it seems like you are trying to `develop` a folder where you keep multiple packages, you should `develop` the package folder itself.
---
### Author:  [@Luigi\_Marongiu](https://discourse.julialang.org/u/Luigi_Marongiu)
#### Post date: [July 9, 2019, 12:48pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/13 "2019-07-09T12:48:05Z")
Now I see! got it, thank you.
---
### Author:  [@dhazeghi](https://discourse.julialang.org/u/dhazeghi)
#### Post date: [July 9, 2019, 5:32pm UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/14 "2019-07-09T17:32:27Z")
Is there a way to keep the source for multiple modules in a single directory? We have a large number of modules and relocating each one to its own subdirectory would be rather painful.
---
### Author:  [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)
#### Post date: [July 10, 2019, 5:25am UTC](https://discourse.julialang.org/t/where-to-store-custom-packages/25982/15 "2019-07-10T05:25:02Z")
> [@dhazeghi](#):
>
> Is there a way to keep the source for multiple modules in a single directory?
AFAIK not. The loader code assumes that each package gets its own directory.
> [@dhazeghi](#):
>
> relocating each one to its own subdirectory would be rather painful.
You could organize them into submodules of a module (it may be equally or more painful, though 😉).
Note that this is an uncommon setup — most people run version control, which is much more convenient in separate directories. If all those packages operate as a whole, then possibly they are one package, otherwise they should live in separate directories.