pubspec.lock is different between Windows and Unix if path reference is used

[DartBot]

<img src="https://avatars.githubusercontent.com/u/648527?v=3" align="left" width="96" height="96"hspace="10"> Issue by Fox32
Originally opened as dart-lang/sdk#18097

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What steps will reproduce the problem?

1. Add a dependency to a package by path to pubspec.yaml:

  xyz:
    path: ../xyz

1. Run pub get

What is the expected output? What do you see instead?

Using Windows, the following part is added to the pubspec.lock:

  xyz:
    description:
      path: "..\xyz"
      relative: true
    source: path
    version: "0.9.0"

If I put the file into version control, I get problems using it in combination with a Unix system, like OSX. OSX expect the following lines:

  xyz:
    description:
      path: "../xyz"
      relative: true
    source: path
    version: "0.9.0"

What version of the product are you using? On what operating system?

Dart Editor version 1.3.0.dev_07_10 (DEV)
Dart SDK version 1.3.0-dev.7.10

Please provide any additional information below.

Maybe the pubspec.yaml should always be outputed with normal '/', even on Windows, to make it more compatible.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/17034?v=3" align="left" width="48" height="48"hspace="10"> Comment by kevmoo

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Added Area-Pub, Triaged labels.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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Path dependencies are fundamentally non-portable and platform-dependent. If you're sharing code across computers and especially across operating systems, you should use git or hosted dependencies.

We could store paths in the lockfile as file: URIs, which would make a subset of relative paths work across platforms, but I don't know that it's worth such a partial solution to the problem.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/648527?v=3" align="left" width="48" height="48"hspace="10"> Comment by Fox32

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Is there a way to use hosted or git dependencies with some sort of authentication? Our current workaround is a additional git repository that is handled externally and is added as a path dependency.
The problem with this workaround is that it requires that every user check the repository the same way. Thats not really good. Till now we tried to not use multiple packages at all, but now we require a second package.

Any idea how to handle this in a better way?

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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Git is very flexible in the number of protocols it supports. You can use private GitHub repositories to support authentication, or host a git repository on your own server behind either SSH or HTTP authentication. If you have a local network that's not accessible externally, you could also host a git repository there.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/648527?v=3" align="left" width="48" height="48"hspace="10"> Comment by Fox32

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That is what we tried first:

1. Add a git dependency:
   packagename:
     git: http://username@computer/spackagename.git
2. Run pub get
3. Pub get asks for your password, enter it
4. Pub asks for the password again, enter it again
5. Pub exits with error message:
   Error in pubspec for package "packagename" loaded from ..\Pub\Cache\git\packagename-HEAD\pubspec.yaml:
   Could not find a file named "pubspec.yaml" in "..\Pub\Cache\git\packagename-HEAD".

It looks like it does not accept the password for some reasons, but that would be a seperate issue. I don't get any password request at all if I run pub get from the editor.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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What do the contents of ..\Pub\Cache\git\packagename-HEAD look like? How about ..\Pub\Cache\git? Can you include the result of installing from that git URL with --trace?

I've filed issue dart-lang/sdk#18224 to track editor support for using credentials with git repositories.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/648527?v=3" align="left" width="48" height="48"hspace="10"> Comment by Fox32

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The packagename-HEAD folder is empty, except the .git sub folder. The .git folder doesn't look broken on the first view, but operations like "git branch" are not returning the correct results (they return no branches).

I thought before starting the whole process with --trace, I it would make scense cleanup the directories first to have a fresh start. Now I can't repoduce it anymore... On the other side it already happend on multiple devices? I create a issue if it happens again.

I had to type in my password 5 times, thats not really useable, but I don't think their is a better solution for that. After that I tried the ssh based way, but I also had to enter the private key password multiple times.

I think for now we stay with the path dependencies as a simple solution. But later we have to think about it again.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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If you use SSH authentication with an authentication key, you can authenticate once with a local daemon and avoid typing your password for future connections. Setting that up is outside the scope of this bug, though.

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Added WontFix label.

[DartBot]

This comment was originally written by xavier.hai...@gmail.com

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I would like to reopen this bug.
I think this is very justified to use path dependencies even when working with multiple platforms.

We have a single git repository that contains a lot of packages which reference each other with relative path. ie:

• common
• net (reference common with path: ../common)
• proj1 (reference net with path: ../net)
• proj2...

We don't want to host each package separately because it represent a single solution that we split for convenience.

The changes in the pubscpec.lock that appears when someone commit from windows or from mac is only noise that we would like to remove.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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If you're using dependencies that are so tightly-coupled as to always be in the same repository, putting them in different packages seems like the wrong architecture. Packages primary exist for versioning, and if you're using them over the long term in an unversionable environment you're already working against the grain of the system. I don't think it makes sense to add this feature to support that sort of environment.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/4172903?v=3" align="left" width="48" height="48"hspace="10"> Comment by jtalley

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I'm frustrated at the short sighted answer of WontFix on this. There are many reasons for splitting code into multiple packages. Multiple packages is completely valid because Dart specifies access control (private members) at the package level. Deferred loading is yet another reason to be using multiple packages. Large code bases need organization, control, structure. Large code bases are also developed by large teams, which means more development platform diversity. Other tools handle this issue. Fix this!

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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Issue #1221 has been merged into this issue.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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There's nothing stopping you from using multiple packages. If you want them to be portable across multiple machines, though, you'll need to put them in separate repositories or separate hosted packages.

Dart specifies access control (private members) at the package level. Deferred
loading is yet another reason to be using multiple packages.

This isn't accurate. The Dart language has no notion of packages. All access control and deferred loading is library-level.

Large code bases need organization, control, structure.

It's perfectly possible to organize your code within a single package. Packages are units of distribution first, and organization second.

[DartBot]

<img src="https://avatars.githubusercontent.com/u/46275?v=3" align="left" width="48" height="48"hspace="10"> Comment by munificent

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If the path in the lockfile is relative, I personally think it would be good to have it use forward slashes. That's compatible with both Windows and POSIX. Relative path packages are pretty common, and it seems like a shame to make them less portable when the fix is simple. We already have plenty of special-case code for relative versus absolute paths, so I don't think it's too much of a pain to add a little more.

I'm re-opening this, but we can talk about in person if you want Natalie.

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Added Triaged label.