Auto-install and auto-compile mix deps when doing mix run

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Gabriel Jaldon

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Jun 22, 2015, 12:09:34 PM6/22/15
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I think it would improve user experience when doing `mix run something` or `mix phoenix.server` auto-installs deps. Having to manually type in `mix do deps.get, deps.compile` seems like an unnecessary step. If people prefer that, they can still do it though.

Can we add this to Mix?

José Valim

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Jun 22, 2015, 12:21:14 PM6/22/15
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You never need to type mix deps.compile manually unless doing something really special (like changing a dependency source manually).

The reason why we decided to not auto-install deps is because it is an expensive step to run "behind the scenes".



José Valim
Skype: jv.ptec
Founder and Director of R&D

On Mon, Jun 22, 2015 at 6:09 PM, Gabriel Jaldon <gjal...@gmail.com> wrote:
I think it would improve user experience when doing `mix run something` or `mix phoenix.server` auto-installs deps. Having to manually type in `mix do deps.get, deps.compile` seems like an unnecessary step. If people prefer that, they can still do it though.

Can we add this to Mix?

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Gabriel Jaldon

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Jun 22, 2015, 1:21:58 PM6/22/15
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It is an expensive but we don't really do it behind the scenes when we auto-install. A user will still see it happening when they do mix run or some other task.

That way, we're also consistent since we already auto-compile deps when we run? 

José Valim

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Jun 22, 2015, 2:23:36 PM6/22/15
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It is not about consistency because they are two completely different things. We are comparing downloading packages and remote git repos with running code locally.

If I am bringing remote code to my machine, I want to be explicit about it for all purposes, performance, security, etc.
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Gabriel Jaldon

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Jun 22, 2015, 2:27:01 PM6/22/15
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I see what you mean now. Thanks for taking the time to explain. :)

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Ben Wilson

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Jun 22, 2015, 2:28:49 PM6/22/15
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It's also worth noting that this is the convention in every other build system I can think of.

bundle install
npm install
cargo install
go get
etc.

The mix deps.compile step IS done automatically as Jose mentioned, but it would be very unusual for dependency retrieval to happen implicitly.

On Monday, June 22, 2015 at 2:23:36 PM UTC-4, José Valim wrote:
It is not about consistency because they are two completely different things. We are comparing downloading packages and remote git repos with running code locally.

If I am bringing remote code to my machine, I want to be explicit about it for all purposes, performance, security, etc.

On Monday, June 22, 2015, Gabriel Jaldon <gjal...@gmail.com> wrote:
It is an expensive but we don't really do it behind the scenes when we auto-install. A user will still see it happening when they do mix run or some other task.

That way, we're also consistent since we already auto-compile deps when we run? 

On Tuesday, June 23, 2015 at 12:09:34 AM UTC+8, Gabriel Jaldon wrote:
I think it would improve user experience when doing `mix run something` or `mix phoenix.server` auto-installs deps. Having to manually type in `mix do deps.get, deps.compile` seems like an unnecessary step. If people prefer that, they can still do it though.

Can we add this to Mix?

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Gabriel Jaldon

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Jun 22, 2015, 3:03:04 PM6/22/15
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This isn't the case with Bundler. I actually implemented auto-installing on bundler when running certain commands in bundler which includes `bundle exec`. 

So was thinking maybe we could do the same with `mix run`.

On Tue, Jun 23, 2015 at 2:28 AM, Ben Wilson <benwil...@gmail.com> wrote:
It's also worth noting that this is the convention in every other build system I can think of.

bundle install
npm install
cargo install
go get
etc.

The mix deps.compile step IS done automatically as Jose mentioned, but it would be very unusual for dependency retrieval to happen implicitly.

On Monday, June 22, 2015 at 2:23:36 PM UTC-4, José Valim wrote:
It is not about consistency because they are two completely different things. We are comparing downloading packages and remote git repos with running code locally.

If I am bringing remote code to my machine, I want to be explicit about it for all purposes, performance, security, etc.

On Monday, June 22, 2015, Gabriel Jaldon <gjal...@gmail.com> wrote:
It is an expensive but we don't really do it behind the scenes when we auto-install. A user will still see it happening when they do mix run or some other task.

That way, we're also consistent since we already auto-compile deps when we run? 

On Tuesday, June 23, 2015 at 12:09:34 AM UTC+8, Gabriel Jaldon wrote:
I think it would improve user experience when doing `mix run something` or `mix phoenix.server` auto-installs deps. Having to manually type in `mix do deps.get, deps.compile` seems like an unnecessary step. If people prefer that, they can still do it though.

Can we add this to Mix?

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José Valim
Skype: jv.ptec
Founder and Director of R&D

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