# Newbie question regarding Travis CI

**URL:** <https://discourse.julialang.org/t/newbie-question-regarding-travis-ci/26236>\
**Category:** New to Julia\
**Created:** [July 10, 2019, 7:52pm UTC](https://discourse.julialang.org/t/newbie-question-regarding-travis-ci/26236 "2019-07-10T19:52:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![korowjev](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/korowjev/32/6431_2.png) [@korowjev](https://discourse.julialang.org/u/korowjev)\
**Post date:** [July 10, 2019, 7:52pm UTC](https://discourse.julialang.org/t/newbie-question-regarding-travis-ci/26236/1 "2019-07-10T19:52:09Z")

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I am trying to use Travis in an Open Source project I started. I have some (very limited) experience with CI, but using C++.

My build.jl file is this: [https://github.com/korowjev/ArgData.jl/blob/master/deps/build.jl](https://github.com/korowjev/ArgData.jl/blob/master/deps/build.jl)

I do include HTTP in my requirements, but every time Travis tries to build I get: `ERROR: LoadError: ArgumentError: Package ArgData does not have HTTP in its dependencies`

The more I googled, the more confused I got since most questions I found on Stack Overflow, for example, seem to be from people with more experience than me. So, here I ask if someone can point me to documentations/comments/anything that can help me understand and fix this (I assume) very simple mistake.

Thank you very much in advance.

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**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:** [July 10, 2019, 8:16pm UTC](https://discourse.julialang.org/t/newbie-question-regarding-travis-ci/26236/2 "2019-07-10T20:16:16Z")

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This isn’t really a Travis CI problem, but more an issue with what you’re trying to do in your `build.jl` file. The `build.jl` file is intended to compile _non-Julia_ dependencies for your project. If your package just depends on other Julia packages (as is the case here), then you should not have a `build.jl` file at all.

Instead, you need to be use the `Project.toml` file, which is what `Pkg` uses to figure out what dependencies your project has. You can learn more about `Pkg` here: [1. Introduction · Pkg.jl](https://julialang.github.io/Pkg.jl/v1/) . You list the Julia dependencies of your package in `Project.toml`, and then users will automatically get those dependencies installed when they install your code.

While it is possible to edit `Project.toml` files manually, I find that it’s much easier to let `Pkg` do it for you. For example, let’s create a new `Project.toml` and add some dependencies to it:

```julia
julia> using Pkg

# Create a new project in a new folder called ArgData
julia> Pkg.generate("ArgData")
Generating project ArgData:
    ArgData/Project.toml
    ArgData/src/ArgData.jl
UUID("0e2afcf6-a34f-11e9-3f29-13cfdb572c71")

# Tell Pkg that we want to use that new project (and its associated Project.toml)
julia> Pkg.activate("./ArgData")
"/home/BOSDYN/rdeits/Downloads/ArgData/Project.toml"

# Add a dependency to that project (this will update Project.toml)
julia> Pkg.add("HTTP")

# Add another dependency:
julia> Pkg.add("CSV")

```

The result will be a file which looks like this:

```julia
$ cat Downloads/ArgData/Project.toml 
name = "ArgData"
uuid = "0e2afcf6-a34f-11e9-3f29-13cfdb572c71"
authors = ["Robin Deits <rdeits@bostondynamics.com>"]
version = "0.1.0"

[deps]
CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"

```

That `Project.toml` should go in the top level of your project’s git repository, and then Travis CI (and anyone who installs your package) will automatically get the right set of dependencies.

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<div class="post-metadata">

**Author:** ![korowjev](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/korowjev/32/6431_2.png) [@korowjev](https://discourse.julialang.org/u/korowjev)\
**Post date:** [July 10, 2019, 8:48pm UTC](https://discourse.julialang.org/t/newbie-question-regarding-travis-ci/26236/3 "2019-07-10T20:48:24Z")

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Wow! Thank you very much for your detailed reply. I will look into Pkg documentation, yet this information is very clear and explanatory on its own. Thanks again!