[swift-build-dev] Questions about the SwiftPM `--update`

[Martha JP]

Thank you so much for the quick reply.

About 3, I'm really sorry that I can't explain it well in English.
I want to get to know the `Pacakes` directory condition after the update to
2.0.0, SwiftPM remains PackageA-1.0.0 directory or not.

##### Before the update #####
```
MyApp
├── Packages/
│   ├── PackageA-1.0.0
```

##### After the update to 2.0.0 #####

```
MyApp
├── Packages/
│   ├── PackageA-1.0.0
│   ├── PackageA-2.0.0
```

or

```
MyApp
├── Packages/
│   ├── PackageA-2.0.0
```

Best regards,
JPMartha

2016-04-02 8:39 GMT+09:00 Max Howell <max.howell at apple.com>:

> I understand the SwiftPM don't support running `--fetch` twice in the
> current implementation.
> -
> https://lists.swift.org/pipermail/swift-build-dev/Week-of-Mon-20160328/000380.html
>
> Then, can I ask any questions about `--update`?
>
> Let's suppose the following situation:
> - `MyApp` depends on `PackageA` and `B`.
> - `PackageB` depends on `C`.
>
> ```
> MyApp
> ├── Package A
> └── Package B
>     └── Package C
> ```
>
> ##### Questions #####
>
> 1. If `PackageA` requires update, then SwitPM should fetch `PackageA`
> only, or all packages?
>
>
> —update updates everything
>
> 2. If `PackageB` requires update, then SwitPM should fetch both `PackageB`
> and `C`?
>
>
> —update updates everything
>
> 3. if `PackageA-1.0.0` requires update to `2.0.0`, then SwiftPM shoud
> remain `PackageA-1.0.0` directory, or remove?
>
>
> It depends on the Package.swift for MyApp. If it allows A to be 2.0, then
> it updates to 2.0, if not then it does not update to 2.0
>
>
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